CN103861963A - Automatic thin wall gold tube necking machine - Google Patents

Abstract

The invention discloses an automatic thin wall gold tube necking machine, belonging to the technical field of jewelry processing equipment. The automatic thin wall gold tube necking machine comprises a rack, wherein the rack is provided with a feed system; the downstream of the feed system is provided with a mould system used for stamping a tube billet of a thin wall gold tube into bead strings; the feed system comprises an axial feeding device used for conveying the tube billet of the thin wall gold tube, a rotation feeding device used for rotating the tube billet of the thin wall gold tube in an intermittent way and a clamp device used for clamping or loosening the tube billet of the thin wall gold tube. According to the automatic thin wall gold tube necking machine, feeding, rotating clamping and stamping of the tube billet of the thin wall gold tube are automatic, so automatic feeding and stamping of the processing of the tube billet of the thin wall gold tube are realized. When the stamping is performed, the tube billet of the thin wall gold tube is clamped, so the quality of the produced bead strings is stable. In the machining process, stock lifting for the tube billet of the thin wall gold tube is not needed, so the working efficiency is significantly improved.

Description

Thin-wall gold tube automatic shrinking machine

technical field

The invention belongs to the technical field of jewelry processing equipment, and in particular relates to an automatic necking machine for thin-walled gold tubes.

Background technique

Precious metal jewelry is more and more popular with consumers due to its dazzling appearance. There are more and more styles of precious jewelry on the market, and the categories are becoming more and more complex. Such as precious metal jewelry, marquise-shaped monomers are generally processed into bead strings from thin-walled gold tubes, and then the bead strings are cut into individual bead string monomers.

At present, for processing thin-walled gold tubes into bead strings, a combination of manual feeding and a small manual punching machine is usually used. The punch of the punching machine is equipped with an upper mold with a profile. During production, the operator feeds the material with one hand. One end of the gold tube billet to be processed is sent to the lower die with the same profile, and the other hand operates and controls the punch, while rotating the gold tube billet to forge, and after many repetitions, the thin-walled gold tube is The tube blank is forged into beads. The disadvantages of this processing method are: due to the manual feeding and rotation of the gold tube billet and the operation and control of the punch, it is easy to cause inaccurate feeding position and low forging precision, and it is difficult to maintain uniform product specifications and quality. , and the production efficiency is low.

Chinese invention patent ZL200910016919.9 discloses a jewelry beading machine of the present inventor, which includes a frame; a die forging device installed on the frame, and the die forging device is arranged in sequence along the direction of travel of the metal tube blank. The multiple forging stations are used to gradually forge metal tube blanks into bead strings or single beads; the feeding device installed on the frame, including the auxiliary lifting device for lifting the metal tube blank, will The axial feeding device that conveys the metal tube blank down one step to the next forging station, makes the metal tube blank rotate intermittently in one forging station and forms a flipping feeding device for multiple forging phases. Since the feeding, turning, forging and lifting of metal tube blanks are all automatic mechanical processing, the specifications of the thin-walled spherical gold and silver beads produced by this jewelry beading machine remain uniform, the quality is guaranteed, and the production efficiency is significantly improved. , but also eliminates security risks. However, during the operation of the jewelry beading machine, after the forging is finished, the metal tube blank needs to be lifted by the auxiliary lifting device every time, and then the axial feeding device can transport the metal tube blank downward. The production efficiency is affected; and when the die forging forming device is forging the metal tube blank, the metal tube blank is not fixed, and the forging position of the gold tube is unstable, resulting in unstable quality of the produced bead string.

Contents of the invention

The technical problem to be solved by the present invention is to provide an automatic shrinking machine for thin-walled gold tubes, which can automatically feed and stamp thin-walled gold tube blanks, so that the thin-walled gold tube blanks can be processed into strings of beads, with stable quality and remarkable work efficiency improve.

In order to solve the above technical problems, the technical solution of the present invention is: thin-walled gold tube automatic shrinking machine, including a frame, the frame is provided with a feed system, the downstream of the feed system is provided with a thin-walled gold tube A mold system for stamping tube blanks into beads, the feeding system includes an axial feeding device for conveying thin-walled gold tube blanks, a rotary feeding device for intermittently rotating thin-walled gold tube blanks, and a clamping or Loosen the fixture device of the thin-walled gold tube billet; the axial feeding device includes a feeding slider fixed seat fixedly installed on the frame, and a feeding slider is horizontally slidably installed on the feeding slider fixing seat, so A rotating shaft is installed on the feeding slider, and the rotating shaft has a first transparent cavity for horizontally placing thin-walled metal tube blanks, and a feeding spring is arranged between the feeding slider and the feeding slider fixing seat , the frame is provided with a main shaft driven by a power unit, and an end cam is fixedly installed on the main shaft, and the end cam is connected with a feeding swing rod for resetting the feeding slider, and the feeding swing rod It is hingedly installed on the frame, and the force end of the feeding pendulum leans against the end surface of the feeding slider; the rotating feeding device includes a rotating shaft gear set on the rotating shaft, and the rotating shaft gear and the rotating shaft A one-way clutch is arranged between them, a clutch spring is arranged between the shaft gear and the feeding slider, a rotating cam is fixedly installed on the main shaft, a rotating slider is connected to the rotating cam, and a rotating slider is installed on the frame. A rotary slider fixing seat, the rotary slider is vertically slidably mounted on the rotary slider fixing seat, a straight tooth rack is arranged on the rotary slider, and the straight tooth rack is connected with the shaft gear Engagement, a rotary return spring is provided between the rotary slider and the rotary slider fixed seat; the clamp device includes a clamp installed at the end of the rotating shaft, and the clamp has a function for placing a thin-walled metal tube blank The second transparent cavity, the axial direction of the second transparent cavity is the same as that of the first transparent cavity, the outer surface of the clamp is tapered, and at least two openings are distributed on the large end of the clamp , the outer side of the clamp is provided with a clamp cover that is compatible with the outer surface of the clamp, and a clamp return spring is provided between the clamp cover and the feeding slider; a return swing bar is hingedly installed on the frame, The material return swing bar has a hinged end connected to the frame, a drive end for driving the clamp cover to slide horizontally, and a swing bar force end, and the connection line between the hinge end, the drive end and the swing bar force end is in the form of triangular, the main shaft is fixedly equipped with a stripping cam, and the stripping cam is connected with a stripping rod, and a stripping rod fixing seat is installed on the frame, and the stripping rod is vertically slidably installed on the stripping rod. On the material rod fixing seat, the force application end of the material withdrawal rod is offset against the force application end of the material withdrawal swing rod.

As an improvement, the mold system includes an upper mold fixedly installed on the frame, a lower mold is provided under the upper mold, and the upper mold and the lower mold are respectively equipped with a The profile of the wall metal tube billet shrinkage, the stamping cam is fixedly installed on the main shaft, the stamping cam is connected with a stamping slider, the stamping slider is slidably installed on the frame, and the lower mold is installed on the The force application end of the stamping slider.

As a further improvement, both the upper mold and the lower mold include a fixed part and a movable part; the fixed part and the movable part are connected together by fasteners.

As a further improvement, the frame is provided with a feeding adjustment device, the feeding adjustment device includes an adjusting screw fixing seat fixedly installed on the feeding slider fixing seat, and an adjusting screw is installed on the adjusting screw fixing seat , the end of the adjusting screw is against the feeding spring.

As a further improvement, the frame is provided with two opposing support tubes along the traveling direction of the thin-walled gold tube blank, and the feeding system and the mold system are provided between the two support tubes.

After adopting the above technical scheme, the beneficial effects of the present invention are: since the thin-walled gold tube automatic shrinking machine includes a frame, the frame is provided with a feed system, and the downstream of the feed system is provided with a A mold system for punching gold tube blanks into beads, the feeding system includes an axial feeding device for conveying thin-walled gold tube blanks, a rotary feeding device for intermittently rotating thin-walled gold tube blanks, and a clamping Or loosen the fixture device of the thin-walled gold tube billet; therefore, during the operation of the automatic necking machine, the axial feeding device will transport the thin-walled gold tube billet downstream once every time the main shaft rotates, and the feeding position is accurate; then rotate the feeding device The thin-walled gold tube blank is rotated intermittently. Every time the thin-walled gold tube blank is rotated, the clamp device clamps the thin-walled gold tube blank, and then the mold system stamps the thin-walled gold tube blank. The stamping position is accurate, and then the mold system resets, and the fixture After the thin-walled gold tube blank is stamped several times, repeat the above process, and so on, and finally process the thin-walled gold tube blank into a string of beads. Since the feeding, rotation, clamping and stamping of the thin-walled gold tube blanks are all automatic, the automatic feeding and stamping of the thin-walled gold tube blanks are realized, and the thin-walled gold tube blanks are clamped during stamping. , so the quality of the beads produced is stable; in the process of processing, there is no need to lift the thin-walled gold tube blank, and the work efficiency is significantly improved.

Since the upper mold and the lower mold both include a fixed part and a movable part; the fixed part and the movable part are connected together by fasteners, so when producing different types of bead strings, only the upper mold needs to be replaced by fasteners It only needs to be connected with the movable part of the lower mold, and the operation is convenient.

Since an adjusting screw fixing seat is designed on the feeding slider fixing seat, an adjusting screw is installed on the adjusting screw fixing seat, and the end of the adjusting screw is offset against the feeding spring, so the feeding spring can be changed by rotating the adjusting screw. The amount of compression, and then change the feeding stroke of the axial feeding device to adapt to the production of bead string monomers of different lengths.

Since the frame is provided with two oppositely arranged support tubes, the two support tubes support the thin-walled gold tube blank to avoid bending of the thin-walled gold tube blank when the length of the thin-walled gold tube blank is long. Affects the feeding of the feeding system.

Description of drawings

Fig. 1 is the structural representation of the embodiment of the present invention;

Fig. 2 is the left view of Fig. 1;

Fig. 3 is the structural representation of feeding system among Fig. 1;

Fig. 4 is the left view of Fig. 3;

Fig. 5 is the top view of Fig. 3;

Fig. 6 is a partially enlarged schematic diagram of place A in Fig. 3;

Fig. 7 is a structural representation of the mold system in Fig. 1;

In the figure: 1. Rack, 2. Die system, 21. Upper die, 22. Lower die, 23. Stamping cam, 24. Stamping slider, 25. Stamping gasket, 26. Fastener, 3. Axial direction Feeding device, 31, feeding slider fixing seat, 32, feeding slider, 321, left bearing, 322, right bearing, 33, rotating shaft, 34, first transparent cavity, 35, feeding spring, 36, end face cam, 37, feeding pendulum bar, 38, feeding pendulum bar fixing seat, 4, rotary feeding device, 41, rotating shaft gear, 42, rotating cam, 43, rotating slider, 44, rotating slider fixing seat, 45, straight toothed rack , 46, rotation return spring, 47, one-way clutch, 471, first half body, 472, second half body, 48, clutch spring, 5, clamp device, 51, clamp, 52, second transparent cavity, 53. Fixture cover, 54. Fixture return spring, 55. Fixing seat of the swing rod for returning material, 56. Swing rod for returning material, 57. Cam for returning material, 58. Material returning rod, 581. Top block for returning material, 59. Returning material Rod holder, 6, power unit, 61, motor, 62, speed reducer, 63, driving sprocket, 64, driven sprocket, 65, chain, 7, main shaft, 8, feeding adjustment device, 81, adjusting screw rod fixing Seat, 82, adjusting screw rod, 9, support tube.

Detailed ways

In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

As shown in Figure 1 and Figure 2 together, a thin-walled gold tube automatic necking machine includes a frame 1, a feed system is provided on the frame 1, and a feed system is provided downstream of the feed system for stamping the thin-walled gold tube blank. The beading mold system 2, the feeding system includes the axial feeding device 3 for conveying the thin-walled gold tube blank, the rotary feeding device 4 for intermittently rotating the thin-walled gold tube blank and the clamping or loosening The fixture device 5 of the thin-walled gold tube billet.

As shown in Figures 1 to 6, the axial feeding device 3 includes a feed slider holder 31 fixedly installed on the frame 1, and a feed slider 32 is horizontally slid on the feed slider holder 31. Rotating shaft 33 is installed on 32, and rotating shaft 33 has the first transparent cavity 34 that is used to place thin-walled metal tube blank horizontally, is provided with feeding spring 35 between feeding slider 32 and feeding slider fixing seat 31, frame 1 is provided with a main shaft 7 driven by a power unit 6, and an end cam 36 is fixedly installed on the main shaft 7. The end cam 36 is connected with a feeding swing rod 37 for resetting the feeding slider 32, and the feeding swing rod 37 is hingedly installed on the feeding On the swing rod fixing seat 38, the feeding swing rod fixing seat 38 is fixedly installed on the frame 1, and the force end of the feeding swing rod 37 leans against the end face of the feeding slider 32.

Wherein, the power unit 6 includes a motor 61 installed on the frame 1, the output end of the motor 61 is connected to a speed reducer 62, and the output end of the speed reducer 62 is provided with a chain transmission device, and the chain transmission device includes a motor connected to the output end of the speed reducer 62 The driving sprocket 63 connected and the driven sprocket 64 that is connected with the main shaft 7 are surrounded with a chain 65 between the driving sprocket 63 and the driven sprocket 64; certainly the power unit 6 can also select a hydraulic motor or the like for use. It can be realized, and those skilled in the art can make a selection according to the actual situation, and details are not repeated here.

The rotary feeding device 4 includes a rotating shaft gear 41 sleeved on the rotating shaft 33, the two ends of the feeding slider 32 are respectively provided with a left bearing 321 and a right bearing 322, and the two ends of the rotating shaft 33 are respectively installed on the left bearing 321 and the right bearing 322 , a rotating cam 42 is fixedly installed on the main shaft 7, a rotating slider 43 is connected to the rotating cam 42, a rotating slider fixing seat 44 is installed on the frame 1, and the rotating slider 43 is vertically slidably mounted on the rotating slider fixing seat 44 , the rotary slider 43 is provided with a straight tooth rack 45, the straight tooth rack 45 is meshed with the shaft gear 41, and a rotary return spring 46 is arranged between the rotary slider 43 and the rotary slider fixed seat 44; When the block 43 is reset, the thin-walled gold tube billet rotates in reverse, a one-way clutch 47 is provided between the rotating shaft gear 41 and the rotating shaft 33, and a clutch spring 48 is provided between the rotating shaft gear 41 and the feeding slider 32; the one-way clutch 47 includes The first half body 471 connected together with the rotating shaft gear 41 and the second half body 472 connected together with the rotating shaft 33 are provided with forks on the first half body 471 and the second half body 472. During work, the first half body 471 The fork teeth on the half body 471 drive the fork teeth on the second half body 472 to rotate, and when the rotary slide block 43 resets, the fork teeth on the first half body 471 slip on the fork teeth on the second half body 472, thereby ensuring The thin-walled gold tube billet always rotates in one direction; the clutch spring 48 exerts force on the shaft gear 41, thereby ensuring the contact between the first half body 471 and the second half body 472.

The clamp device 5 includes a clamp 51 installed at the end of the rotating shaft 33. The clamp has a second through cavity 52 for placing a thin-walled metal tube blank. The second through cavity 52 is connected to the axis of the first through cavity 34. In the same direction, the outer surface of the clamp 51 is tapered, and the large end of the clamp 51 is distributed with at least two openings. The outside of the clamp 51 is provided with a clamp cover 53 that is compatible with the external surface of the clamp 51. The clamp cover 53 is connected to the feeding slider. 32 is provided with fixture return spring 54; On the frame 1, there is fixedly installed the material return swing rod holder 55, and the material return swing rod holder 55 is hingedly equipped with return material swing rod 56, and the material return swing rod 56 has a connection The hinged end of the frame 1, the horizontally sliding driving end of a driving fixture cover 53 and the force application end of a swing rod, the connecting line between the hinge end, the drive end and the force application end of the swing rod is triangular, and the return cam 57 is fixedly installed on the main shaft 7, The ejector cam 57 is connected with an ejector rod 58, the ejector rod holder 59 is installed on the frame 1, the ejector rod 58 is vertically slidably mounted on the ejector rod holder 59, and the force end of the ejector rod 58 is provided with an ejector. The material jacking block 581, the swing bar exerting force end of the material jacking block 581 and the material swing bar 56 offsets.

As shown in Figure 7, the mold system 2 includes a patrix 21 fixedly installed on the frame 1, a lower die 22 is provided under the patrix 21, and the opposite surfaces of the patrix 21 and the lower die 22 are respectively provided with a The profile of the wall metal tube blank shrinks, and the main shaft 7 is fixed with a stamping cam 23, which is connected with a stamping slider 24, and the stamping slider 24 is slidably installed on the frame 1. The force end of the stamping slider 24 is provided with Stamping gasket 25, lower mold 22 is installed on the stamping gasket 25.

Preferably, the upper mold 21 and the lower mold 22 all include a fixed part and a movable part; the fixed part and the movable part are connected together by a fastener 26, and the profile of the upper mold 21 is arranged on the movable part of the upper mold 21, and the upper mold The fixed part of 21 is fixedly installed on the frame 1, the profile of the lower mold 22 is arranged on the movable part of the lower mold 22, the fixed part of the lower mold 22 is fixedly installed on the frame 1, and the fastener 26 can be selected from bolts or Screws, etc., when producing different types of bead strings, only need to replace the movable part of the upper mold 21 and the lower mold 22 by the fastener 26, and the operation is convenient.

As shown in Figure 4 and Figure 5, preferably, the frame 1 is provided with a feeding adjustment device 8, the feeding adjustment device 8 includes an adjustment screw fixing seat 81 fixedly installed on the feeding slider fixing seat 31, and the adjustment screw fixing seat Adjusting screw rod 82 is installed on 81, and the end of adjusting screw rod 82 offsets with feeding spring 35. By turning the adjusting screw 82, the compression amount of the feeding spring 35 is changed, and then the feeding stroke of the axial feeding device 3 is changed, so as to adapt to the production of bead string monomers of different lengths.

As shown in Figure 1, preferably, on the frame 1, two oppositely arranged support tubes 9 are arranged along the traveling direction of the thin-walled gold tube billet, and a feeding system and a mold system 2 are arranged between the two support tubes 9. The tube 9 plays a supporting role for the thin-walled gold tube billet, so as to avoid bending of the thin-walled gold tube billet when the length of the thin-walled gold tube billet is long, which affects the feeding of the feeding system.

When working, the main shaft 7 rotates, the stamping slider 24 drives the lower die 22 to move upwards, and compresses the thin-walled gold tube billet, and the return swing lever 56 rotates counterclockwise, so that the clamp sleeve 53 moves along the thin-walled gold tube billet. Reverse movement, so that the clamp 51 loosens the thin-walled gold tube billet, and then the feeding slider 32 moves in the opposite direction to the advancing direction of the gold tube billet under the action of the feeding swing rod 37, and then the return swing rod 56 rotates clockwise, and the clamp The sleeve 53 resets under the action of the clamp return spring 54, the clamp 51 clamps the thin-walled gold tube billet, and then the feed spring 35 in the axial feeding device 3 applies force to the feed slider 32 in the axial direction, and the feed slider 32 Together with the thin-walled gold tube billet, it is transported downstream once to complete the feeding, and the feeding position is accurate; then the thin-walled gold tube billet rotates intermittently under the drive of the rotating shaft gear 41, specifically, the thin-walled gold tube billet stops once every rotation, and then punches once (The thin-walled gold tube billet does not rotate during stamping), the stamping position is accurate, and then the stamping slider 24 drives the lower die 22 to move downward, so that the upper die 21 and the lower die 22 are separated, and the thin-walled gold tube billet is driven by the rotating shaft gear 41 Continue to rotate next time. Preferably, the main shaft 7 rotates once, and the stamping slider 24 drives the lower die 22 to complete five stampings. The number of stampings can be realized by the number of sides provided by the stamping cam 23 along the peripheral surface. The thin-walled gold tube blank After the stamping is completed, the rotary return spring 46 drives the rotary slider 43 to move downward to reset, so that the main shaft 7 will continue to rotate for the next revolution; then repeat the above process, and so on, and finally the thin-walled gold tube blank will be processed into a continuous bead string.

The thin-walled gold tube automatic shrinking machine provided by the embodiment of the present invention realizes the automatic feeding and stamping of the thin-walled gold tube blank because the feeding, rotation, clamping and stamping of the thin-walled gold tube blank are all automatic. Moreover, during stamping, the thin-walled gold tube blank is clamped, so the quality of the produced bead string is stable; during the processing, it is not necessary to lift the thin-walled gold tube blank, and the work efficiency is significantly improved.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the protection of the present invention. within range.

Claims (5)

1. thin-wall gold tube automatic necking machines, comprise frame, described frame is provided with feed system, the downstream of described feed system is provided with the mold system for thin-wall gold tube pipe being struck out to pearl string, it is characterized in that, described feed system comprises for delivery of the axial feeder of thin-wall gold tube pipe, for making the swivel feeding device of thin-wall gold tube pipe intermittent rotary and for clamping or unclamp the grip device of thin-wall gold tube pipe;

Described axial feeder comprises the feeding slide block holder being fixedly mounted in described frame, on described feeding slide block holder, horizontal slip is provided with feeding slide block, on described feeding slide block, be rotatablely equipped with rotating shaft, described rotating shaft has the first penetrating cavity for horizontal positioned thin-wall metal pipe, between described feeding slide block and described feeding slide block holder, be provided with feeding spring, described frame is provided with the main shaft being driven by power set, on described main shaft, be installed with edge cam, described edge cam is connected with one for making the feeding fork of described feeding slide block reset, described feeding fork is hinged to be installed in described frame, the force side of described feeding fork relies on the end face of described feeding slide block,

Described swivel feeding device comprises the shaft gear being sleeved in described rotating shaft, between described shaft gear and rotating shaft, be provided with one-way clutch, between described shaft gear and feeding slide block, be provided with clutch spring, on described main shaft, be installed with rotating cam, described rotating cam is connected with a rotary slider, rotary slider holder is installed in described frame, described rotary slider is vertically slidably mounted on described rotary slider holder, described rotary slider is provided with spur rack, described spur rack is meshed with described shaft gear, between described rotary slider and described rotary slider holder, be provided with spinning reduction spring,

Described grip device comprises the fixture that is arranged on described roller end, described fixture has the second penetrating cavity for placing thin-wall metal pipe, described the second penetrating cavity is axially identical with the first penetrating cavity, the outer surface of described fixture is tapered, the large end of described fixture is distributed with at least two openings, the outside of described fixture is provided with the fixture cover suitable with the outer surface of described fixture, between described fixture cover and feeding slide block, is provided with fixture back-moving spring, the hinged material returned fork that is provided with in described frame, described material returned fork has a hinged end that connects described frame, one drives drive end and a fork force side of described fixture cover horizontal slip, described hinged end, the line of drive end and fork force side is triangular in shape, on described main shaft, be installed with material returned cam, described material returned cam is connected with a material returned bar, material returned bar holder is installed in described frame, described material returned bar is vertically slidably mounted on described material returned bar holder, the fork force side of the force side of described material returned bar and described material returned fork offsets.

2. thin-wall gold tube automatic necking machines according to claim 1, it is characterized in that, described mold system comprises the patrix being fixedly installed in described frame, the below of described patrix is provided with counterdie, on the relative face of described upper die and lower die, be respectively equipped with the profile for making the reducing of thin-wall gold tube pipe, on described main shaft, be installed with punching press cam, described punching press cam is connected with a Punching slider, described Punching slider is slidably mounted in described frame, and described counterdie is installed on the force side of described Punching slider.

3. thin-wall gold tube automatic necking machines according to claim 1 and 2, is characterized in that, described upper die and lower die include fixed part and movable part; Described fixed part and movable part link together by securing member.

4. thin-wall gold tube automatic necking machines according to claim 3, it is characterized in that, described frame is provided with feeding adjusting device, described feeding adjusting device comprises the adjustment screw rod holder being fixedly mounted on described feeding slide block holder, on described adjustment screw rod holder, adjustment screw rod is installed, the end of described adjustment screw rod and feeding spring offset.

5. thin-wall gold tube automatic necking machines according to claim 4, is characterized in that, in described frame, is provided with two stay pipes that are oppositely arranged along the direct of travel of thin-wall gold tube pipe, is provided with described feed system and mold system described in two between stay pipe.

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