A tolerance ring production apparatus having an automatic positioning cutting device

Abstract

The application relates to the technical field of tolerance ring production and discloses a tolerance ring production equipment with an automatic positioning and cutting device, which comprises a machining base and a back plate, the inner wall of a mounting groove is connected with a telescopic block in a penetrating mode, the bottom of the inner wall of the mounting groove is fixedly provided with a first electric cylinder, the output end of the first electric cylinder is connected with a first pushing shaft in a penetrating mode, one end of the telescopic block is fixedly provided with an arc-shaped guide frame, the output end of a second electric cylinder penetrates through the bottom of a mounting plate and is connected with a second pushing shaft in a penetrating mode, and the bottom of the second pushing shaft is fixedly provided with a cutting blade. The tolerance ring material in the die-casting inner recess is positioned and transferred by the positioning frame and the first transmission roller, passes above the telescopic block, the first electric cylinder is controlled by a central control panel to be intermittently stretched and contracted, the first pushing shaft intermittently pushes the telescopic block to extrude the transferred tolerance ring material to make the tolerance ring material be bent, the tolerance ring material continues to be transferred to be circularly bent by the guidance of the arc-shaped guide frame, and the tolerance ring material is rotated on the guide shaft to be formed into a ring.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of tolerance ring production, and particularly relates to a tolerance ring production equipment with an automatic positioning and cutting device. BACKGROUND

[0002] In the field of mechanical processing, as a kind of key ring gauge or connecting element, the tolerance ring plays an important role in detecting and controlling the size precision of workpieces. Its core principle lies in realizing the accurate fixing and size verification of workpieces by means of elastic deformation or tolerance compensation mechanism. The tolerance ring is usually made of metal or plastic, and adopts the negative tolerance design concept, that is, its inner diameter is slightly smaller than the allowable range of the size of the workpiece. In actual application, by trying to pass the shaft parts (such as bearings) through the tolerance ring, if the workpiece cannot pass through the ring body smoothly, it is determined that the size of the workpiece is out of tolerance and does not meet the quality standard.

[0003] With the vigorous development of modern mechanical industry, the demand for tolerance rings in the production and processing of many mechanical parts is increasing day by day, not only in the frequency of use, but also in the adaptation demand for diversified types of tolerance rings. This trend promotes the continuous enrichment of the types of tolerance ring production equipment and the increasing of its functions, aiming to meet the efficient production needs of various types of tolerance rings to adapt to the production rhythm and quality requirements brought by the development of modern science and technology.

[0004] However, the current existing tolerance ring production equipment still exposes many problems to be solved in the actual processing and production process:

[0005] Firstly, in the ring forming and cutting link of the tolerance ring, the existing equipment has obvious limitations. Some equipment still highly depends on manual precise control of the bending angle during the bending and forming operation. Even some so-called automatic forming production equipment is still in a semi-automatic cutting state in the actual production process, and still needs workers to monitor and control the bending progress in real time. This operation mode not only has low efficiency, but also is prone to transmission deviation in the process of manual operation, which leads to problems such as ring forming bending deviation and insufficient bending, seriously affecting the production quality of the tolerance ring and being difficult to meet the quality requirements of high-precision mechanical parts for the tolerance ring;

[0006] Secondly, in the production process of the tolerance ring, the material lifting transmission and ring forming and cutting processing links are closely connected. The material needs to be transmitted for a long distance before reaching the ring forming and cutting area for subsequent processing. However, most ordinary tolerance ring production devices currently lack centering positioning function, which makes the material prone to transmission deviation in the transmission process. This deviation not only affects the accuracy of subsequent processing, but also may cause the equipment to be forced to interrupt transportation due to abnormal material position during operation, and manual maintenance and adjustment is needed, which greatly reduces the overall processing efficiency of the equipment, increases the production cost and time cost;

[0007] Thirdly, in the process of conveying the processing material, due to the long conveying distance and long duration, the material is prone to be not tightly conveyed due to the power stability of each electrical equipment on the upper end of the equipment and the running state of the equipment itself. When the material is in the untight state, the key operations such as cutting and die casting are performed, which can cause the elastic coefficient of the upper end of the tolerance ring processed to be unable to reach the design standard. This not only causes serious waste of material resources and increases the production cost, but also has a negative impact on the production progress, causes the production plan to be delayed, and cannot deliver the products meeting the quality requirements on time.

[0008] Therefore, it is necessary to invent a tolerance ring production equipment with an automatic positioning cutting device to solve the above problems. SUMMARY

[0009] In view of the above problems, the present application provides a tolerance ring production equipment with an automatic positioning cutting device to solve the problems proposed in the background art.

[0010] To achieve the above purpose, the present application provides the following technical scheme: a tolerance ring production equipment with an automatic positioning cutting device, comprising a processing base and a back plate, characterized in that: the top of the processing base is provided with an automatic positioning cutting mechanism, an extrusion mechanism, a center positioning mechanism, a stretching mechanism and a conveying mechanism in front and back distribution, wherein the back plate is fixedly installed on the back of the processing base;

[0011] The automatic positioning cutting mechanism comprises a positioning frame installed at one end of the top edge of the processing base, first transmission rollers are rotatably connected to the inner walls of the positioning frame at equal distances on both sides, an installation groove is formed in one end of the inner wall of the processing base, first limiting sliding grooves are formed in the upper edges of the inner walls of the installation groove on both sides, telescopic blocks are connected through the inner wall of the installation groove, a first electric cylinder is fixedly installed on the bottom of the inner wall of the installation groove, a first pushing shaft is connected through the output end of the first electric cylinder, a first spring is sleeved on the outer wall of the first pushing shaft, and the two ends of the first spring are fixedly connected with the bottom of the telescopic block and the top of the first electric cylinder, respectively, an arc guide frame is fixedly installed on one end of the telescopic block, first limiting blocks are fixedly installed on both sides of the telescopic block, and the two first limiting blocks are slidingly connected to the inner walls of the two first limiting sliding grooves, respectively, a material guide shaft is installed above the positioning frame on one side of the back plate, an installation plate is fixedly installed above the material guide shaft on one side of the back plate, a second electric cylinder is installed on the top of the installation plate, a second pushing shaft is connected through the bottom of the installation plate and the output end of the second electric cylinder, a cutting blade is fixedly installed on the bottom of the second pushing shaft, a buffer groove is formed in the top of the material guide shaft, an electric telescopic rod is installed below the material guide shaft on one side of the back plate, a discharging plate is fixedly installed on the output end of the electric telescopic rod, and an arc discharging frame is fixedly installed on one end of the material guide shaft.

[0012] The extrusion mechanism comprises two extrusion rollers, two die casting rings, two gears, a fixed frame and a first motor;

[0013] Preferably, the two extrusion rollers are arranged on the upper and lower sides of one side of the back plate respectively, the two die casting rings are fixedly installed at the middle positions of the outer walls of the two extrusion rollers respectively, one end of each of the two extrusion rollers is fixedly connected with a gear through the outer wall of the one side of the back plate, and the two gears are engaged with each other.

[0014] Preferably, the fixed frame is fixedly installed at the upper edge of the other side of the back plate, and the first motor is fixedly installed at one side of the fixed frame, and one end of one of the gears is fixedly connected with the output end of the first motor through the one side of the fixed frame.

[0015] Preferably, a groove is formed in the top side of the processing base, and one of the extrusion rollers is rotatably installed in the inner wall of the groove, an adjusting groove is formed in the inner wall of the processing base at the middle position, second limiting sliding grooves are formed in the inner wall bottom of the adjusting groove at both ends, a plurality of connecting grooves are equidistantly formed in the top of the processing base at both ends of the adjusting groove, two through grooves are formed in the top of the processing base above the adjusting groove, and the inner walls of the two through grooves are respectively communicated with the inner walls of both ends of the adjusting groove.

[0016] Preferably, the center positioning mechanism comprises connecting frames inserted and installed in the inner walls of both ends of the adjusting groove, connecting shafts are fixedly connected with the inner walls of the two through grooves at the top sides of both sides of the two connecting frames, a bidirectional screw rod is rotatably connected with the inner wall of the adjusting groove at the middle position, the outer walls of both ends of the bidirectional screw rod are respectively threadedly connected with the inner walls of the two connecting frames, second limiting blocks are fixedly arranged at the bottom sides of both sides of the two connecting frames, the outer walls of the four second limiting blocks are respectively slidably connected with the inner walls of the two second limiting sliding grooves, guide rollers are rotatably connected with the tops of the four connecting shafts, and a second motor is fixedly connected with one end of the bidirectional screw rod through the outer wall of one side of the processing base.

[0017] Preferably, the stretching mechanism comprises a plurality of first supporting shafts, the top of the plurality of first supporting shafts is fixedly provided with a first lifting frame, one side of the first lifting frame is rotatably connected with a plurality of extrusion wheels at equal distances, the outer wall of each first supporting shaft is sleeved with a second spring, the other side of the first lifting frame is fixedly provided with a plurality of third limiting blocks, a plurality of third limiting sliding grooves are formed in one side of the back plate, and each third limiting block is slidably connected to each third limiting sliding groove, a third electric cylinder is mounted on one side of the top of the back plate, the output end of the third electric cylinder is connected with a third pushing shaft, and one end of the third pushing shaft is fixedly connected with the top of the first lifting frame, a plurality of first connecting holes are formed in the top of the processing base below the first lifting frame, and the outer wall of each first supporting shaft passes through the inner wall of each first connecting hole, and the two ends of each second spring are fixedly connected with the bottom of the first lifting frame and the top of the processing base.

[0018] Preferably, the conveying mechanism comprises an auxiliary table mounted at one end of the processing base, a mounting frame is fixedly arranged at the upper edge of the one end of the processing base, a driven roller is rotatably connected between the auxiliary table and the mounting frame at equal distances, fourth limiting sliding grooves are formed in the two sides of the auxiliary table, a fourth electric cylinder is fixedly arranged on the top of the auxiliary table, a fourth pushing shaft is connected between the output end of the fourth electric cylinder and one side of the auxiliary table, and a plurality of second connecting holes are equidistantly formed in one side of the top of the auxiliary table.

[0019] Preferably, the inner wall of each second connecting hole is connected with a second supporting shaft, the top of each second supporting shaft is fixedly provided with a second lifting frame, a plurality of driving rollers are rotatably connected to the inner wall of the second lifting frame at equal distances, one end of each driving roller is fixedly connected with a synchronous pulley through the outer wall of one side of the second lifting frame, the outer wall of each synchronous pulley is meshed with a synchronous belt, and a limiting roller is rotatably connected to one side of the outer wall of the second lifting frame, and the outer wall of the limiting roller is in contact with one side of the synchronous belt.

[0020] Preferably, the outer wall of each second supporting shaft is sleeved with a third spring, and the two ends of each third spring are fixedly connected with the bottom of the second lifting frame and the top of the auxiliary table, and the other end of one of the driving rollers is fixedly provided with a third motor through the other side of the second lifting frame.

[0021] Preferably, the inner wall of each connecting groove is rotatably connected with a second transmission roller, a central control panel is mounted on one side of the processing base, a control switch is mounted on the upper end of the central control panel, and the first electric cylinder, the second electric cylinder, the electric telescopic rod, the first motor, the second motor, the third electric cylinder, the fourth electric cylinder and the third motor are electrically connected with an external power source through the control switch.

[0022] The technical effects and advantages of the present application are:

[0023] 1、The present application is characterized in that the automatic positioning and cutting mechanism is provided, the positioning frame and the first transmission roller are used to position and transfer the tolerance ring material of the die casting inner recess, the material is transferred above the telescopic block, the first electric cylinder is controlled by the center control panel to be intermittently telescopic, the first push shaft pushes the telescopic block to intermittently extrude the transferred tolerance ring material, the material is bent, and the bent material is continuously transferred through the guide of the arc-shaped guide frame to be circularly bent, then the material is transferred to the guide shaft and rotated to form a ring on the guide shaft, the second electric cylinder is intermittently pushed by the center control panel, the second push shaft is pushed by the second electric cylinder, the cutting blade is used to cut the tolerance ring below the ring at a fixed time interval, finally, the tolerance ring on the guide shaft is pushed into the arc-shaped discharge frame by the electric telescopic rod to be discharged, and the material is extruded to be in the inner recess state by the extrusion between the extrusion roller and the die casting ring, so that the elastic coefficient is improved, and manual processing of the staff is not needed, the design scheme can realize positioning and transfer of the tolerance ring, deviation is not easy to occur, automatic cutting is realized, the staff is not needed to manually control the bending degree and transfer direction of the material, the quality of the tolerance ring is not easy to be reduced in automatic production, and the production quality of the tolerance ring is improved.

[0024] 2、The present application is characterized in that the center positioning mechanism is provided, the second motor is started to rotate the bidirectional screw rod, the two connecting frames are moved in the adjusting groove, the connecting shaft and the guide roller are moved on the top of the machining base, and the distance between the four guide rollers is adjusted, the guide rollers can contact the two sides of the material of different widths, and the material is rotated along the transfer direction, the purpose of center positioning and transfer is achieved, deviation or jamming of the tolerance ring in later processing is not easy to occur due to deviation of the material transfer, frequent interruption and maintenance are not needed, and the working efficiency of the equipment is improved.

[0025] 3、The present application is characterized in that the stretching mechanism is provided, if the material is not tightened during the transfer process of the tolerance ring, the third electric cylinder is started to push the first lifting frame to lift on the top of the machining base through the third push shaft, the lifting extrusion wheel is lifted, the material below is extruded, the material is tightened and continuously transferred, manual adjustment of the tightening degree of the material by the staff is not needed, the probability of processing error in the later stage is reduced, the waste of material resources is reduced, and the influence on the production progress is reduced.

[0026] Other features and advantages of the present application will be set forth in the following description, and in part will become apparent to those skilled in the art from the description, or can be learned by practice of the present application. The objects and other advantages of the present application can be realized and achieved by the structures indicated in the specification, claims and drawings. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0028] Figure 1 is a schematic view of the front of the present application;

[0029] Figure 2 is a schematic view of the inside of the processing base of the present application;

[0030] Figure 3 is a schematic view of the side of the processing base of the present application;

[0031] Figure 4 is a schematic view of the overall telescopic block of the present application;

[0032] Figure 5 is a schematic view of the enlarged view of A in the description of the present application; Figure 2

[0033] Figure 6 is a schematic view of the connection of the extrusion roller and the die casting ring of the present application;

[0034] Figure 7 is a schematic view of the back of the present application;

[0035] Figure 8 is a schematic view of the top of the processing base of the present application;

[0036] Figure 9 is a schematic view of the center positioning mechanism of the present application;

[0037] Figure 10 is a schematic view of the stretching mechanism of the present application;

[0038] Figure 11 is a schematic view of the conveying mechanism of the present application.

[0039] ​In the figure: 1, processing base; 2, back plate; 3, automatic positioning cutting mechanism; 301, positioning frame; 302, first transmission roller; 303, mounting groove; 304, first limiting sliding groove; 305, telescopic block; 306, first electric cylinder; 307, first push shaft; 308, first spring; 309, arc guide frame; 310, first limiting block; 311, material guide shaft; 312, mounting plate; 313, second electric cylinder; 314, second push shaft; 315, cutting blade; 316, buffer groove; 317, electric telescopic rod; 318, blanking plate; 319, arc blanking frame; 4, extrusion mechanism; 401, extrusion roller; 402, die casting ring; 403, gear; 404, fixed frame; 405, first motor; 5, recess; 6, adjusting groove; 7, second limiting sliding groove; 8, connecting groove; 9, through groove; 10, center positioning mechanism; 1001, connecting frame; 1002, connecting shaft; 1003, bidirectional screw; 1004, second limiting block; 1005, guide roller; 1006, second motor; 11, stretching mechanism; 1101, first support shaft; 1102, first lifting frame; 1103, extrusion wheel; 1104, second spring; 1105, third limiting block; 1106, third limiting sliding groove; 1107, third electric cylinder; 1108, third push shaft; 1109, first connecting hole; 12, conveying mechanism; 1201, auxiliary table; 1202, mounting frame; 1203, driven roller; 1204, fourth limiting sliding groove; 1205, fourth electric cylinder; 1206, fourth push shaft; 1207, second connecting hole; 1208, second support shaft; 1209, second lifting frame; 1210, driving roller; 1211, synchronous pulley; 1212, synchronous belt; 1213, limiting wheel; 1214, third spring; 1215, third motor; 13, second transmission roller; 14, central control panel. DETAILED DESCRIPTION

[0040] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the following will be combined with the accompanying drawings for the embodiments of the present application to make a clear and complete description of the technical solutions in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0041] The present application provides a tolerance ring production equipment with an automatic positioning cutting device as shown in Figures 1-11 The present application provides a tolerance ring production equipment with an automatic positioning cutting device as shown in

[0042] The automatic positioning cutting mechanism 3 comprises a positioning frame 301 mounted at one end edge of the top of the machining base 1, first transmission rollers 302 are rotatably connected to the inner walls of both sides of the positioning frame 301 at equal distances, a mounting groove 303 is formed in one end of the inner wall of the machining base 1, first limiting sliding grooves 304 are formed at the upper edges of the inner walls of both sides of the mounting groove 303, telescopic blocks 305 are connected to the inner wall of the mounting groove 303, a first electric cylinder 306 is fixedly installed at the bottom of the inner wall of the mounting groove 303, a first pushing shaft 307 is connected to the output end of the first electric cylinder 306, a first spring 308 is sleeved on the outer wall of the first pushing shaft 307, and the two ends of the first spring 308 are fixedly connected with the bottom of the telescopic block 305 and the top of the first electric cylinder 306 respectively, an arc-shaped guide frame 309 is fixedly arranged at one end of the telescopic block 305, first limiting blocks 310 are fixedly arranged on both sides of the telescopic block 305, and the two first limiting blocks 310 are slidingly connected to the inner walls of the two first limiting sliding grooves 304 respectively, a material guiding shaft 311 is mounted above the positioning frame 301 on one side of the back plate 2, a mounting plate 312 is fixedly arranged above the material guiding shaft 311 on one side of the back plate 2, a second electric cylinder 313 is mounted at the top of the mounting plate 312, a second pushing shaft 314 is connected to the output end of the second electric cylinder 313 through the bottom of the mounting plate 312, a cutting blade 315 is fixedly arranged at the bottom of the second pushing shaft 314, a buffer groove 316 is formed at the top of the material guiding shaft 311, an electric telescopic rod 317 is mounted below the material guiding shaft 311 on one side of the back plate 2, a discharging plate 318 is fixedly arranged at the output end of the electric telescopic rod 317, and an arc-shaped discharging frame 319 is fixedly arranged at one end of the material guiding shaft 311;

[0043] The extrusion mechanism 4 comprises two extrusion rollers 401, two die casting rings 402, two gears 403, a fixing frame 404 and a first motor 405;

[0044] In use, the tolerance ring material is extruded and transferred by the transmission mechanism 12, and the two sides are pressure cast into a concave state by the extrusion mechanism 4, thereby increasing the elasticity of the formed tolerance ring. After pressure casting, the material passes through the positioning frame 301 and is transferred to the arc-shaped guide frame 309 at the top of the telescopic block 305 under the positioning and transmission of the first transmission roller 302 at the two ends of the inside of the positioning frame 301. At this time, the first electric cylinder 306 is started to push the first push shaft 307 above it at a fixed frequency, thereby pushing the telescopic block 305 to move up and down in the installation slot 303. The telescopic block 305 moves up and down while pushing and bending the tolerance ring material transferred from the positioning frame 301, so that the bent area of the material is continuously transferred to the arc-shaped guide frame 309, and then continuously bent and transferred to the material guide shaft 311 under the guidance of the arc-shaped guide frame 309, and then bent into a ring on the outer wall of the material guide shaft 311. When an open circular ring is formed, the second electric cylinder 313 is started to cut the formed tolerance ring by the cutting blade 315 in the buffer slot 316 at the upper end of the material guide shaft 311, thereby cutting off the formed tolerance ring. The left rear electric telescopic rod 317 pushes the discharge plate 318 to slide the formed tolerance ring onto the arc-shaped discharge frame 319 for collection. In this process, the transfer speed of the tolerance ring is constant, so the interval extension time of the second electric cylinder 313 is set to the tolerance ring formation time. This design can realize positioning and transmission of the tolerance ring, so that it is not easy to deviate, and at the same time realizes automatic cutting without the need for workers to manually control the bending degree and transmission direction of the material, thereby preventing the quality of the tolerance ring from decreasing during automatic production and improving the production quality of the tolerance ring.

[0045] Further, the two extrusion rollers 401 are respectively installed on one side of the back plate 2 in an upper and lower distribution, and the two pressure casting rings 402 are respectively fixedly installed at the middle positions of the outer walls of the two extrusion rollers 401. One end of each of the two extrusion rollers 401 is fixedly connected with a gear 403 penetrating through the outer wall of one side of the back plate 2, and the two gears 403 are meshed with each other. By rotating the two gears 403, the two extrusion rollers 401 can be rotated relative to each other to extrude and transfer the tolerance ring material.

[0046] The fixed frame 404 is fixedly installed at the upper edge of the other side of the back plate 2, and the first motor 405 is fixedly installed on one side of the fixed frame 404. One end of one of the gears 403 is fixedly connected with the output end of the first motor 405 penetrating through one side of the fixed frame 404. The first motor 405, the stretching mechanism 11 and the center positioning mechanism 10 can center the tolerance ring material and transmit it without deviation when it is transferred between the two extrusion rollers 401. At this time, under the rotation of the extrusion rollers 401, the two pressure casting rings 402 pressure cast on both sides of the material to form a concave on both sides of the material, thereby increasing the elasticity of the formed tolerance ring and improving the quality of the tolerance ring.

[0047] Further, a recess 5 is formed on one side of the top of the processing base 1, and one of the extrusion rollers 401 is rotatably installed in the inner wall of the recess 5. An adjusting groove 6 is formed in the middle position of the inner wall of the processing base 1. Second limiting grooves 7 are formed at both ends of the bottom of the inner wall of the adjusting groove 6. A plurality of connecting grooves 8 are equidistantly formed at both ends of the adjusting groove 6 on the top of the processing base 1. Two through grooves 9 are formed above the adjusting groove 6 on the top of the processing base 1, and the inner walls of the two through grooves 9 are respectively communicated with the inner walls at both ends of the adjusting groove 6.

[0048] Further, the center positioning mechanism 10 includes connecting frames 1001 inserted and installed at both ends of the inner wall of the adjusting groove 6. Connecting shafts 1002 are fixedly connected to the top of both sides of the two connecting frames 1001 through the inner walls of the two through grooves 9. A bidirectional screw rod 1003 is rotatably connected to the middle position of the inner wall of the adjusting groove 6. The outer walls of both ends of the bidirectional screw rod 1003 are respectively threadedly connected with the inner walls of the two connecting frames 1001. Second limiting blocks 1004 are fixedly arranged at the bottom of both sides of the two connecting frames 1001, and the outer walls of the four second limiting blocks 1004 are respectively slidably connected with the inner walls of the two second limiting grooves 7. Guiding rollers 1005 are rotatably connected to the top of the four connecting shafts 1002. A second motor 1006 is fixedly connected to one end of the bidirectional screw rod 1003 through the outer wall of one side of the processing base 1. When the tolerance ring material is transmitted on the equipment, the second motor 1006 is started to rotate the bidirectional screw rod 1003, thereby moving the two connecting frames 1001 relative to each other in the adjusting groove 6, and moving the connecting shafts 1002 and the guiding rollers 1005 relative to each other on the top of the processing base 1, thereby adjusting the distance between the four guiding rollers 1005. For different width tolerance ring materials, the guiding rollers 1005 can contact the two sides of the material and rotate along the transmission of the material, so as to achieve the purpose of center positioning transmission. It is not easy to cause deviation or jamming of the tolerance ring processing due to the deviation of material transmission in the later processing, and frequent interruption and maintenance are not required, thereby improving the working efficiency of the equipment.

[0049] Further, the stretching mechanism 11 comprises a plurality of first supporting shafts 1101, the top of the plurality of first supporting shafts 1101 is fixedly provided with a first lifting frame 1102, one side of the first lifting frame 1102 is rotatably connected with a plurality of extrusion wheels 1103 at equal distances, the outer wall of each first supporting shaft 1101 is sleeved with a second spring 1104, the other side of the first lifting frame 1102 is fixedly provided with a plurality of third limiting blocks 1105, a plurality of third limiting sliding grooves 1106 are formed in one side of the back plate 2, and each third limiting block 1105 is slidably connected to each third limiting sliding groove 1106, a third electric cylinder 1107 is installed on one side of the top of the back plate 2, the output end of the third electric cylinder 1107 is penetratingly connected with a third pushing shaft 1108, and one end of the third pushing shaft 1108 is fixedly connected with the top of the first lifting frame 1102, a plurality of first connecting holes 1109 are formed in the top of the machining base 1 below the first lifting frame 1102, and the outer wall of each first supporting shaft 1101 respectively penetrates the inner wall of each first connecting hole 1109, and the two ends of each second spring 1104 are fixedly connected with the bottom of the first lifting frame 1102 and the top of the machining base 1, during the material transfer process of the tolerance ring, if the material is not taut, the third electric cylinder 1107 is started to make the first lifting frame 1102 lift on the top of the machining base 1 through the third pushing shaft 1108, and then the extrusion wheel 1103 is lifted to extrude the material below, so that the material is taut and continues to transfer, without the need for manual adjustment of the tautness of the material by the staff, reducing the probability of late processing error, thereby reducing the waste of material resources and the impact on production progress, and the first lifting frame 1102 will compress the second spring 1104 during the penetrating process in the first connecting hole 1109, so that the first lifting frame 1102 can quickly recover to the original position through the elasticity of the second spring 1104 when the downward pressure is removed, avoiding excessive extrusion of the material;

[0050] Further, the conveying mechanism 12 comprises an auxiliary table 1201 installed at one end of the machining base 1, a mounting bracket 1202 is fixedly arranged at the upper edge of one end of the machining base 1, a driven roller 1203 is rotatably connected between the auxiliary table 1201 and the mounting bracket 1202 at equal distances, fourth limiting sliding grooves 1204 are formed in the two sides of the auxiliary table 1201, a fourth electric cylinder 1205 is fixedly arranged on the top of the auxiliary table 1201, a fourth pushing shaft 1206 is penetratingly connected to the output end of the fourth electric cylinder 1205 through one side of the auxiliary table 1201, a plurality of second connecting holes 1207 are equally formed on one side of the top of the auxiliary table 1201, and the auxiliary table 1201 and the mounting bracket 1202 are installed at the front end of the machining base 1, facilitating the conveying of the material.

[0051] The inner wall of each second connecting hole 1207 is connected with a second supporting shaft 1208, the top of each second supporting shaft 1208 is fixedly provided with a second lifting frame 1209, the inner wall of the second lifting frame 1209 is equidistantly rotatably connected with a plurality of driving rollers 1210, one end of each driving roller 1210 is fixedly connected with a synchronous pulley 1211 through the outer wall of one side of the second lifting frame 1209, the outer wall of each synchronous pulley 1211 is in transmission with a synchronous belt 1212, the outer wall of the limiting wheel 1213 is rotatably connected with the outer wall of one side of the second lifting frame 1209, and the outer wall of the limiting wheel 1213 is in contact with one side of the synchronous belt 1212. In the tolerance ring conveying process, the driving roller 1210 and the driven roller 1203 are passed through, according to the thickness of the material, the fourth electric cylinder 1205 is started to push the second lifting frame 1209 to make it descend with the driving roller 1210, until the driving roller 1210 is extruded with the driven roller 1203 and the material, when the extrusion thickness is increased, the pressure of the fourth electric cylinder 1205 is removed, and the second lifting frame 1209 can also be quickly raised under the elastic action of the third spring 1214, so that the extrusion transmission of the tolerance ring material with different thicknesses is facilitated, and when the driving roller 1210 rotates, the third motor 1215 is started to make it rotate synchronously through the synchronous pulley 1211 and the synchronous belt 1212, and then drive all the driving rollers 1210 to rotate synchronously, and the limiting wheel 1213 limits the synchronous belt 1212, so that the synchronous pulley 1211 in the middle is fully engaged with the synchronous belt 1212.

[0052] Further, the outer wall of each second supporting shaft 1208 is sleeved with a third spring 1214, and the two ends of each third spring 1214 are fixedly connected with the bottom of the second lifting frame 1209 and the top of the auxiliary table 1201, respectively, and the other end of one of the driving rollers 1210 is fixedly provided with a third motor 1215 through the other side of the second lifting frame 1209. In the tolerance ring material threading process, the second transmission roller 13 rotatably connected in the connecting groove 8 is contacted to make it rotate, reduce friction, so that the material transmission is more smooth and not easy to jam.

[0053] Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A tolerance ring production apparatus with an automatic positioning cutting device, comprising a machining base (1) and a back plate (2), characterized in that: The top of the processing base (1) is provided with an automatic positioning cutting mechanism (3), an extrusion mechanism (4), a central positioning mechanism (10), a stretching mechanism (11) and a conveying mechanism (12) in front and back, wherein the back plate (2) is fixedly installed on the back of the processing base (1); The automatic positioning cutting mechanism (3) comprises a positioning frame (301) installed at one end of the top edge of the processing base (1), first transmission rollers (302) are rotatably connected to the inner walls of the positioning frame (301) at equal distances, an installation groove (303) is formed in one end of the inner wall of the processing base (1), first limiting sliding grooves (304) are formed in the upper edges of the inner walls of the two sides of the installation groove (303), telescopic blocks (305) are connected to the inner wall of the installation groove (303), a first electric cylinder (306) is fixedly installed on the bottom of the inner wall of the installation groove (303), a first push shaft (307) is connected to the output end of the first electric cylinder (306), a first spring (308) is arranged on the outer wall of the first push shaft (307), and the two ends of the first spring (308) are fixedly connected with the bottom of the telescopic block (305) and the top of the first electric cylinder (306), respectively, an arc-shaped guide frame (309) is fixedly arranged on one end of the telescopic block (305), first limiting blocks (310) are fixedly arranged on the two sides of the telescopic block (305), and the two first limiting blocks (310) are slidingly connected to the inner walls of the two first limiting sliding grooves (304), respectively, a material guide shaft (311) is installed above the positioning frame (301) on one side of the back plate (2), an installation plate (312) is fixedly arranged above the material guide shaft (311) on one side of the back plate (2), a second electric cylinder (313) is installed on the top of the installation plate (312), a second push shaft (314) is connected to the output end of the second electric cylinder (313) penetrating through the bottom of the installation plate (312), a cutting blade (315) is fixedly arranged on the bottom of the second push shaft (314), a buffer groove (316) is formed in the top of the material guide shaft (311), an electric telescopic rod (317) is installed below the material guide shaft (311) on one side of the back plate (2), a discharging plate (318) is fixedly arranged on the output end of the electric telescopic rod (317), and an arc-shaped discharging frame (319) is fixedly arranged on one end of the material guide shaft (311). The extrusion mechanism (4) comprises two extrusion rollers (401), two die casting rings (402), two gears (403), a fixed frame (404) and a first motor (405).

2. A tolerance ring production apparatus having an automatic positioning cutting device according to claim 1, characterized in that: The two extrusion rollers (401) are rotatably installed on one side of the back plate (2) in an upper and lower distribution, the two die casting rings (402) are fixedly installed on the outer walls of the two extrusion rollers (401) at the middle positions, respectively, the gears (403) are fixedly connected to one end of the two extrusion rollers (401) penetrating through the outer wall of one side of the back plate (2), and the two gears (403) are meshed with each other.

3. A tolerance ring production apparatus having an automatic positioning cutting device according to claim 2, characterized in that: The fixed frame (404) is fixedly installed at the upper edge of the other side of the back plate (2), and the first motor (405) is fixedly installed at one side of the fixed frame (404), wherein one end of one of the gears (403) is fixedly connected with the output end of the first motor (405) through one side of the fixed frame (404).

4. A tolerance ring production apparatus having an automatic positioning cutting device according to claim 1, characterized in that: A recess (5) is formed in one side of the top of the processing base (1), and one of the extrusion rollers (401) is rotatably installed in the inner wall of the recess (5); an adjusting groove (6) is formed in the middle position of the inner wall of the processing base (1), second limiting sliding grooves (7) are formed at the two ends of the bottom of the inner wall of the adjusting groove (6), a plurality of connecting grooves (8) are equidistantly formed at the two ends of the top of the processing base (1) located at the adjusting groove (6), and two through grooves (9) are formed above the top of the processing base (1) located at the adjusting groove (6), and the inner walls of the two through grooves (9) are respectively communicated with the inner walls of the two ends of the adjusting groove (6).

5. A tolerance ring production apparatus having an automatic positioning cutting device according to claim 4, characterized in that: The center positioning mechanism (10) comprises connecting frames (1001) inserted into the inner walls of the two ends of the adjusting groove (6), connecting shafts (1002) fixedly connected with the inner walls of the two through grooves (9) through the two sides of the top of the two connecting frames (1001), a bidirectional screw rod (1003) rotatably connected with the middle position of the inner wall of the adjusting groove (6), the outer walls of the two ends of the bidirectional screw rod (1003) are respectively threadedly connected with the inner walls of the two connecting frames (1001), second limiting blocks (1004) are fixedly arranged at the two sides of the bottom of the two connecting frames (1001), the outer walls of the four second limiting blocks (1004) are respectively slidably connected with the inner walls of the two second limiting sliding grooves (7), guide rollers (1005) are rotatably connected with the top of the four connecting shafts (1002), and a second motor (1006) is fixedly connected with one end of the bidirectional screw rod (1003) through the outer wall of one side of the processing base (1).

6. A tolerance ring production apparatus having an automatic positioning cutting device according to claim 1, characterized in that: The stretching mechanism (11) comprises a plurality of first support shafts (1101), the top of the plurality of first support shafts (1101) is fixedly provided with a first lifting frame (1102), one side of the first lifting frame (1102) is rotatably connected with a plurality of extrusion wheels (1103) at equal distances, the outer wall of each first support shaft (1101) is sleeved with a second spring (1104), the other side of the first lifting frame (1102) is fixedly provided with a plurality of third limiting blocks (1105), one side of the back plate (2) is provided with a plurality of third limiting sliding grooves (1106), and each third limiting block (1105) is slidably connected to each third limiting sliding groove (1106), one side of the top of the back plate (2) is provided with a third electric cylinder (1107), the output end of the third electric cylinder (1107) is connected with a third push shaft (1108), and one end of the third push shaft (1108) is fixedly connected with the top of the first lifting frame (1102), a plurality of first connecting holes (1109) are formed in the top of the processing base (1) below the first lifting frame (1102), and the outer wall of each first support shaft (1101) penetrates the inner wall of each first connecting hole (1109), and the two ends of each second spring (1104) are fixedly connected with the bottom of the first lifting frame (1102) and the top of the processing base (1).

7. A tolerance ring production apparatus having an automatic positioning cutting device according to claim 1, characterized in that: The conveying mechanism (12) comprises an auxiliary table (1201) mounted at one end of the processing base (1), a mounting frame (1202) is fixedly arranged at the upper edge of one end of the processing base (1), a driven roller (1203) is rotatably connected at equal distances between the auxiliary table (1201) and the mounting frame (1202), fourth limiting sliding grooves (1204) are formed in the two sides of the auxiliary table (1201), a fourth electric cylinder (1205) is fixedly arranged on the top of the auxiliary table (1201), a fourth push shaft (1206) is connected with the output end of the fourth electric cylinder (1205) through one side of the auxiliary table (1201), and a plurality of second connecting holes (1207) are equidistantly formed on one side of the top of the auxiliary table (1201).

8. A tolerance ring production apparatus having an automatic positioning cutting device according to claim 7, characterized in that: The inner wall of each second connecting hole (1207) is connected with a second support shaft (1208), the top of each second support shaft (1208) is fixedly provided with a second lifting frame (1209), a plurality of driving rollers (1210) are rotatably connected to the inner wall of the second lifting frame (1209) at equal distances, one end of each driving roller (1210) is fixedly connected with a synchronous pulley (1211) through the outer wall of one side of the second lifting frame (1209), the outer wall of each synchronous pulley (1211) is in meshing transmission with a synchronous belt strip (1212), and the outer wall of the limiting wheel (1213) is rotatably connected to one side of the outer wall of the second lifting frame (1209).

9. A tolerance ring production apparatus having an automatic positioning cutting device according to claim 8, characterized in that: The outer wall of each second supporting shaft (1208) is sleeved with a third spring (1214), both ends of each third spring (1214) are fixedly connected with the bottom of the second lifting frame (1209) and the top of the auxiliary table (1201) respectively, and the other end of one of the driving rollers (1210) is fixedly provided with a third motor (1215) penetrating through the other side of the second lifting frame (1209).

10. A tolerance ring production apparatus having an automatic positioning cutting device according to claim 4, characterized in that: The inner wall of each connecting groove (8) is rotationally connected with a second transmission roller (13), one side of the machining base (1) is provided with a central control panel (14), the upper end of the central control panel (14) is provided with a control switch, and the first electric cylinder (306), the second electric cylinder (313), the electric telescopic rod (317), the first motor (405), the second motor (1006), the third electric cylinder (1107), the fourth electric cylinder (1205) and the third motor (1215) are electrically connected with an external power supply through the control switch.

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