A grinding device with a watch case clamping tooling

Abstract

The present invention belongs to the field of grinding equipment, and provides a grinding equipment with a watch case clamping tooling, which includes a frame, a scraper conveyor, a connection component and a clamping tooling. The clamping tooling includes a top groove plate and a bottom groove plate. There are countersunk holes on the top groove plate, and a rotary joint and a spring chuck are arranged in the countersunk holes. The spring chuck is used for clamping cooperation with the watch case workpiece. A grinding machine box straddling above the scraper conveyor is arranged on the frame. A fluid sand polishing machine is arranged inside the grinding machine box. The fluid sand polishing machine includes a lifting groove, a fluid sand spraying cylinder, a spray port and a supply pipeline component. The supply end of the supply pipeline component is provided with a fluid sand box. The top of the lifting groove is provided with a lifting oil cylinder connected thereto. The lifting oil cylinder and the fluid sand box are arranged outside the top of the grinding machine box. The present invention has reasonable design, can realize assembly line operation, is beneficial to reducing the working intensity of workers and is beneficial to improving production efficiency and production quality, and is suitable for large-scale popularization.

Description

Technical Field

[0001] The present invention belongs to the field of grinding equipment, and particularly relates to a grinding equipment with a watch case clamping tooling. Background Art

[0002] During the production and processing of watches, it generally needs to go through production processes such as raw material cutting, forging and stamping, machining, grinding and polishing, surface treatment, and assembly and inspection. Among them, grinding and polishing is a material-removing grinding operation. After rough grinding and fine polishing, the appearance texture and gloss of the watch case can be improved. When grinding a watch, tools such as sandpaper and grinding wheels are usually used, gradually from coarse grit to fine grit to remove burrs and unevenness on the surface. Polishing uses a polishing wheel and polishing paste to make the surface of the watch case achieve a mirror-like gloss effect.

[0003] Currently, rough grinding is generally completed by mechanical equipment, and then workers perform targeted fine grinding. Since fine grinding each watch case one by one has low efficiency, especially in large-scale batch production in factories. To improve the fine grinding efficiency, when performing fine grinding manually, multiple watch cases are usually connected in series through a spacer fixture on a rod-shaped tool, and multiple watch cases can be fine-ground at one time by holding the rod-shaped tool. Even so, the working intensity of workers is still very high. Moreover, both the front and back sides need to be ground and polished, and the quality of fine grinding will also vary, increasing the cost of the workshop. Summary of the Invention

[0004] In view of the above technical problems existing in the fine grinding operation of watches, the present invention provides a grinding equipment with a watch case clamping tooling, which has a reasonable design, can realize assembly line operation, is beneficial to reducing the working intensity of workers, and is beneficial to improving production efficiency and production quality.

[0005] To achieve the above object, the technical solution adopted by the present invention is that a grinding device with a watch case clamping tooling provided by the present invention includes a frame, and a conveyor is arranged on the frame. It is characterized in that the conveyor is a scraper conveyor, the scraper conveyor includes a plurality of scrapers distributed along its conveying direction, two reverse-extending connecting components are arranged at both ends of the scraper, and a set of clamping tooling is arranged on the two connecting components. Adjacent clamping toolings are arranged in a zigzag pattern on the scraper conveyor. The clamping tooling includes a top groove plate and a bottom groove plate. A plurality of countersunk holes distributed along its length direction are arranged on the top groove plate, and a rotary joint is arranged in the countersunk hole. A spring chuck is arranged at the top center of the rotary joint, and the spring chuck is used for clamping cooperation with the watch case workpiece. A grinding machine box spanning above the scraper conveyor is arranged on the frame, and a flowing sand polishing machine is arranged inside the grinding machine box. The flowing sand polishing machine includes a lifting groove, and a plurality of flowing sand spray nozzles distributed in a V shape are arranged at the bottom of the lifting groove. A plurality of spray nozzles inclined upward and downward are arranged inside the flowing sand spray nozzle. A supply pipeline assembly communicating with all flowing sand spray nozzles is arranged in the lifting groove. The supply end of the supply pipeline assembly is provided with a flowing sand box, and a lifting oil cylinder connected to it is arranged at the top of the lifting groove. The lifting oil cylinder and the flowing sand box are arranged outside the top of the grinding machine box.

[0006] Preferably, the supply pipeline assembly includes a plurality of spray pipes communicating with the flowing sand spray nozzles one by one. Solenoid valves are arranged on the spray pipes. A distribution branch pipe is arranged at the input end of the spray pipe. A distribution main pipe is arranged at the input end of the distribution branch pipe. Pump pipes telescopically cooperating with it are arranged at both ends of the distribution main pipe. A jet pump is arranged at the top of the pump pipe, and the jet pump is arranged inside the flowing sand box.

[0007] Preferably, the flowing sand spray nozzle includes a conical section. A first inner conical section and a second inner conical section are arranged at intervals up and down inside the conical section. A threaded port is arranged at the top of the conical section. A communication groove is arranged below the threaded port. A plurality of channels extending along the conical section are arranged at the edge of the communication groove. A plurality of downward-inclined lower injection ports are arranged on the first inner conical section. A plurality of upward-inclined upper injection ports are arranged on the second inner conical section. A connecting nozzle threadedly connected to it is arranged at the top of the threaded port. A core rod threadedly connected to the center of the conical section is arranged at the center of the connecting nozzle. An injection port communicating with the communication groove is arranged between the core rod and the connecting nozzle.

[0008] Preferably, an adjusting long hole cooperating with the flowing sand spray nozzle is arranged at the bottom of the lifting groove.

[0009] Preferably, a limiting rod for nested cooperation with the center of the spring chuck is arranged at the center inside the conical section.

[0010] Preferably, at least two pairs of quick plug - in components are arranged on both sides of the top groove plate and the bottom groove plate. The quick plug - in component includes a plug plate arranged at the bottom of the top groove plate. The plug plate is L - shaped and its L - shaped opening is the socket. The plug plate is in sliding fit with the sliding opening arranged on the bottom groove plate. A spring fork plate is arranged at the bottom of the bottom groove plate. The spring fork plate is provided with fork openings that cooperate with both sides of the plug plate. An inner clamping opening in the shape of Y is arranged inside the plug plate. A pull - ring elastic piece is arranged in the inner clamping opening. A positioning protrusion is arranged on the pull - ring elastic piece. The positioning protrusion cooperates with the positioning holes arranged on both sides of the spring fork plate.

[0011] Preferably, the pull - ring elastic piece includes a pull - ring body, and a pair of Y - shaped elastic pieces are arranged at the top of the pull - ring body.

[0012] Preferably, the connecting component includes a wedge block arranged between the top groove plate and the bottom groove plate bracket. A connecting rod is threadedly connected to the middle of the wedge block. A hinge joint is arranged at the end of the connecting rod. The hinge joint is arranged at one end of a connecting plate. A waist - shaped hole is arranged at the other end of the connecting plate. The waist - shaped hole is connected to the scraper by a bolt.

[0013] Preferably, the rotary joint includes a base. A top seat is arranged at the top of the base. A socket nested with a spring collet is arranged between the top seat and the base. The top seat and the base are connected by a plurality of screws.

[0014] Preferably, a support table is arranged below the scraper conveyor. A plurality of chutes distributed along its length direction are arranged in the support table. The chutes are used to recover quicksand. A diversion chute is arranged at the discharge end of the chute. The length direction of the diversion chute is the same as the conveying direction of the scraper conveyor.

[0015] Compared with the prior art, the advantages and positive effects of the present invention are as follows:

[0016] A grinding device with a watch case clamping tooling provided by the present invention, by adopting an assembly - line method, mounts the watch case workpiece on the clamping tooling in the fine grinding process. The watch case workpiece is conveyed towards the grinding machine box by the scraper conveyor. The quicksand polishing machine simultaneously sprays and polishes the front and back sides of the watch case workpieces on two clamping toolings. The fine - ground watch case workpiece is quickly removed by a worker or a manipulator at a position close to the end of the scraper conveyor. This not only improves the efficiency of the fine grinding operation but also effectively guarantees the fine grinding quality. The device is reasonably designed, can realize assembly - line operation, is beneficial to reducing the working intensity of workers and is beneficial to improving production efficiency and production quality, and is suitable for large - scale promotion. Brief Description of the Drawings

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 Isometric view of a grinding device with a watch case clamping tooling provided for the embodiment;

[0019] Figure 2 Front view of a grinding device with a watch case clamping tooling provided for the embodiment;

[0020] Figure 3 Cross-sectional view of a grinding device with a watch case clamping tooling provided for the embodiment in the G-G direction;

[0021] Figure 4 Isometric view of the internal structure of the lifting groove provided for the embodiment;

[0022] Figure 5 Top view of the internal structure of the lifting groove provided for the embodiment;

[0023] Figure 6 Cross-sectional view of the quicksand spray tube provided for the embodiment;

[0024] Figure 7 Top view of the scraper conveyor and the clamping tooling provided for the embodiment;

[0025] Figure 8 Exploded view of the clamping tooling, connection components and scraper provided for the embodiment;

[0026] Figure 9 For Figure 7 Enlarged schematic view of the A structure in

[0027] Figure 10 For Figure 8 Enlarged schematic view of the B structure in

[0028] Figure 11 Front view of the clamping tooling, connection components and scraper provided for the embodiment;

[0029] Figure 12 Cross-sectional view of the clamping tooling, connection components and scraper provided for the embodiment in the E-E direction;

[0030] Figure 13 Side view of the clamping tooling, connection components and scraper provided for the embodiment;

[0031] Figure 14 Stereogram of the clamping tooling, connection components and scraper provided for the embodiment;

[0032] In the above figures:

[0033] 1. Frame; 2. Scraper conveyor; 21. Scraper; 3. Connecting component; 31. Wedge block; 32. Connecting rod; 33. Hinge joint; 34. Connecting plate; 35. Bolt; 4. Clamping tooling; 41. Top groove plate; 42. Bottom groove plate; 43. Countersunk hole; 44. Rotary joint; 441. Top seat; 442. Bottom seat; 45. Spring collet; 46. Quick plug-in component; 461. Plug board; 462. Socket; 463. Slide port; 464. Spring fork board; 465. Positioning hole; 466. Inner clamping port; 467. Pull ring elastic piece; 4671. Pull ring body; 4672. Elastic piece; 468. Positioning protrusion; 5. Watch case workpiece; 6. Grinding machine case; 7. Quicksand polishing machine; 71. Lifting groove; 72. Quicksand spray tube; 721. Conical section; 722. First inner conical section; 723. Second inner conical section; 724. Threaded port; 725. Connecting groove; 726. Channel; 727. Connecting nozzle; 728. Core rod; 729. Injection port; 73. Spray port; 731. Upper spray port; 732. Lower spray port; 74. Supply pipeline component; 741. Spray pipe; 742. Solenoid valve; 743. Distribution branch pipe; 744. Distribution main pipe; 745. Pump pipe; 75. Quicksand box; 76. Lifting oil cylinder; 77. Adjusting long hole; 78. Limit rod; 8. Support platform; 81. Chute. Detailed implementation manners

[0034] In order to more clearly understand the above objects, features and advantages of the present invention, the present invention will be further described below with reference to the drawings and embodiments. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other. For the convenience of narration, words such as "upper", "lower", "left" and "right" hereinafter only represent the same directions as the upper, lower, left and right directions of the drawings themselves, and do not limit the structure.

[0035] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described herein. Therefore, the present invention is not limited by the specific embodiments disclosed in the following specification.

[0036] Embodiment, such as Figures 1 - 14As shown in the figure, a grinding device with a watch case clamping tooling provided by the present invention includes a frame 1. A conveyor is arranged on the frame 1, and the conveyor is a scraper conveyor 2. The scraper conveyor 2 includes a plurality of scrapers 21 distributed along its conveying direction. Two connecting components 3 extending in opposite directions are arranged at both ends of the scraper 21. A clamping tooling 4 is arranged on the two connecting components 3. Adjacent clamping toolings 4 are distributed in a zigzag pattern on the scraper conveyor 2. The clamping tooling 4 includes a top groove plate 41 and a bottom groove plate 42. A plurality of countersunk holes 43 distributed along its length are arranged on the top groove plate 41. A rotary joint 44 is arranged in the countersunk hole 43. A spring collet 45 is arranged at the top center of the rotary joint 44. The spring collet 45 is used for clamping and cooperating with the watch case workpiece 5. A grinding machine case 6 is arranged on the frame 1 and spans above the scraper conveyor 2. A flowing sand polishing machine 7 is arranged inside the grinding machine case 6. The flowing sand polishing machine 7 includes a lifting groove 71. A plurality of flowing sand spray nozzles 72 distributed in a V shape are arranged at the bottom of the lifting groove 71. A plurality of spray ports 73 inclined upward and downward are arranged inside the flowing sand spray nozzle 72. A supply pipeline assembly 74 communicating with all the flowing sand spray nozzles 72 is arranged in the lifting groove 71. A flowing sand box 75 is arranged at the supply end of the supply pipeline assembly 74. A lifting oil cylinder connected to it is arranged at the top of the lifting groove 71. The lifting oil cylinder and the flowing sand box 75 are arranged outside the top of the grinding machine case 6.

[0037] Specifically, the frame 1 provided by the present invention can support the scraper conveyor 2 and the grinding machine case 6. The scraper conveyor 2 operates in a cyclic conveying mode. At the starting end of the scraper conveyor 2, workers or workshop manipulators can install the watch case workpiece 5 on the clamping tooling 4, and the scraper conveyor 2 conveys the watch case workpiece 5 towards the grinding machine case 6. During the process of passing under the flowing sand polishing machine 7, the scraper conveyor 2 can pause the conveying action. On the one hand, it is convenient to leave a certain operation time for the flowing sand polishing machine 7, and on the other hand, it leaves sufficient time intervals for taking and placing the watch case workpiece 5. Regarding the distribution characteristics of the clamping tooling 4 on the scraper conveyor 2, on the one hand, it is beneficial for workers and manipulators to take and place the watch case workpiece 5 and avoid cross-interference situations. On the other hand, it can ensure a smooth transition of the clamping tooling 4 at the cyclic turning-back position of the scraper conveyor 2. The clamping tooling 4 also completes cyclic conveying on the scraper conveyor 2, and each time, the watch case workpiece 5 can be directly taken and placed during a reasonable time interval.

[0038] Furthermore, the lifting oil cylinder of the quicksand polishing machine 7 can drive the lifting groove 71 to move up and down. In particular, all the watch case workpieces 5 on two adjacent clamping jigs 4 respectively correspond to a quicksand spray tube 72. The nozzles inside the quicksand spray tube 72 face the upper and lower surfaces of the watch case workpiece 5. If the injection pump in the quicksand box 75 is started, the front and back sides of the watch case workpieces 5 on the two clamping jigs 4 can be spray polished simultaneously. Moreover, during the spray polishing process, the injection power can drive the rotary joint 44 to drive the watch case workpiece 5 to rotate accordingly, so as to complete the all-round spray polishing without the need to turn the watch case over; the watch case workpiece 5 after fine grinding is quickly removed by the staff or the manipulator at a position close to the end of the scraper conveyor 2. In terms of the grinding and polishing principle, quicksand spray polishing is a technology that uses a high-speed flowing sand grain flow to polish the surface of an object. Compared with manual polishing and other polishing methods, it has many advantages such as high processing efficiency, good quality stability, strong adaptability to workpieces with complex shapes, low labor intensity and good environmental protection. In this way, on the basis of realizing the assembly line operation, the present invention not only improves the efficiency of the fine grinding operation, effectively guarantees the fine grinding quality, but also effectively reduces the working intensity of the workers.

[0039] As Figure 4 shown, in order to ensure the supply performance of the sand grains sprayed in the quicksand spray tube 72, the supply pipeline assembly 74 provided by the present invention has a flow control function and a distribution function. Specifically, the supply pipeline assembly 74 includes a plurality of spray pipes 741 respectively communicated with the quicksand spray tubes 72. Solenoid valves 742 are arranged on the spray pipes 741. The input end of the spray pipe 741 is provided with a distribution branch pipe 743. The input end of the distribution branch pipe 743 is provided with a distribution main pipe 744. Both ends of the distribution main pipe 744 are provided with pump pipes 745 that are telescopically matched with it. The top of the pump pipe 745 is provided with an injection pump, and the injection pump is arranged inside the quicksand box 75. Among them, the injection pump is used to provide pressure on the injection path; the two ends of the pump pipe 745 and the distribution main pipe 744 are designed to be nested, with a certain telescopic cooperation stroke, so as to ensure that while the lifting oil cylinder drives the lifting groove 71 to move up and down, the distribution main pipe 744 always maintains a sealed connection condition with the pump pipe 745. The distribution main pipe 744 is assembled structurally through the clamping plates arranged in the lifting groove 71. From the perspective of the injection path, the distribution main pipe 744 can simultaneously supply the quicksand medium to different distribution branch pipes 743, and the solenoid valve 742 controls the on-off and actual flow rate of the injection terminal. In this way, the fluid medium used for injection grinding enters the quicksand spray tube 72 from the quicksand box 75, the pump pipe 745, the distribution main pipe 744, the distribution branch pipe 743, and the spray pipe 741 in an orderly manner, and then the quicksand spray tube 72 sprays the quicksand onto the watch case workpiece 5, thus completing the effective injection grinding operation.

[0040] As Figure 6As shown in the figure, in order to ensure the efficiency of the quicksand jet grinding operation, the quicksand spray barrel 72 provided by the present invention includes a conical section 721. Inside the conical section 721, a first inner conical section 722 and a second inner conical section 723 are arranged at intervals up and down. At the top of the conical section 721, there is a threaded port 724. Below the threaded port 724, there is a communication groove 725. At the edge of the communication groove 725, there are multiple channels 726 extending along the conical section 721. On the first inner conical section 722, there are multiple downwardly inclined lower injection ports 732. On the second inner conical section 723, there are multiple upwardly inclined upper injection ports 731. At the top of the threaded port 724, there is a connecting nozzle 727 threadedly connected thereto. In the center of the connecting nozzle 727, there is a core rod 728 threadedly connected to the center of the conical section 721 to ensure the centering. Between the core rod 728 and the connecting nozzle 727, there is an injection port 729 communicating with the communication groove 725. Among them, the first inner conical section 722 provides a spraying basis for the lower injection ports 732. The lower injection ports 732 face the upper surface of the watch case. The spraying angles of adjacent lower injection ports 732 are designed to be different angles. The second inner conical section 723 provides a spraying basis for the upper injection ports 731. The upper injection ports 731 face the lower surface of the watch case. The spraying angles of adjacent upper injection ports 731 are designed to be different angles. In this way, during the jet grinding process, the hydrodynamic force sprayed by different nozzles 73 can drive the rotary joint 44 to drive the watch case workpiece 5 to rotate accordingly. The upper and lower surfaces of the watch case workpiece 5 are both sprayed with sand flows for corresponding operations, thereby completing the all-round jet polishing. It is not necessary to turn the watch case over. For complex positions such as the angular parts inside the watch lugs, polishing and grinding can also be completed, thus ensuring the jet grinding operation efficiency of the present quicksand polishing machine 7.

[0041] As Figure 5 shown in the figure, considering that the present invention provides a certain adjustment margin for the installation angle of the clamping tooling 4 on the scraping plate 21, correspondingly, the present invention is provided with an adjustment long hole 77 matching the quicksand spray barrel 72 at the bottom of the lifting groove 71. In this way, by adjusting the actual position of the quicksand spray barrel 72 in the adjustment long hole 77, the quicksand spray barrel 72 can be made to correspond to the corresponding watch case workpiece 5, which not only ensures the jet grinding effect of the present equipment but also ensures the comprehensive utilization rate of the present equipment.

[0042] As Figure 6As shown, considering that the center of the spring chuck 45 is a hollow structure, in order to improve the utilization rate of the sand flow in each quicksand spray tube 72, the present invention is provided with a limiting rod 78 at the inner center of the conical section 721 for nested cooperation with the center of the spring chuck 45. On the one hand, this can reduce the flow rate of sand grains entering the spring chuck 45, enabling the ejected sand flow to make full contact and secondary contact with the watch case; on the other hand, it can reduce the retention and blockage of sand grains in the rotary joint 44 and the spring chuck 45, which is beneficial to the recovery of sand grains; on the third hand, the shoulder on the side of the limiting rod 78 can prevent the rotary joint 44 and the spring chuck 45 from generating vertical movement, and to a certain extent, it can reduce the probability of the watch case workpiece 5 detaching from the spring chuck 45.

[0043] As Figure 8 shown, in order to improve the assembly reliability of the clamping tooling 4, at least two pairs of quick plug-in components 46 are provided on both sides of the top groove plate 41 and the bottom groove plate 42 of the present invention. The quick plug-in component 46 includes a plug plate 461 provided at the bottom of the top groove plate 41. The plug plate 461 is L-shaped and its L-shaped opening is a socket 462. The plug plate 461 is slidably matched with a sliding opening 463 provided on the bottom groove plate 42. A spring fork plate 464 is provided at the bottom of the bottom groove plate 42. The spring fork plate 464 is provided with fork openings for cooperating with both sides of the plug plate 461. An inner clamping opening 466 of Y shape is provided inside the plug plate 461. A pull-ring elastic piece 467 is provided in the inner clamping opening 466. A positioning protrusion 468 is provided on the pull-ring elastic piece 467. The positioning protrusion 468 is matched with positioning holes 465 provided on both sides of the spring fork plate 464. Among them, the end of the assembly opening formed between the top groove plate 41 and the bottom groove plate 42 is used to cooperate with the connecting component 3, and the connecting component 3 establishes a connection relationship between the scraping plate 21 and the clamping tooling 4; the top groove plate 41 slides along the top surface of the bottom groove plate 42 in a sliding manner, and the plug plate 461 can gradually sink from the sliding opening 463 until the socket 462 is inserted at the end of the sliding opening 463; at the same time, the fork openings of the spring fork plate 464 fork at the rear end of the plug plate 461, and the positioning protrusion 468 of the pull-ring elastic piece 467 is clamped with the positioning hole 465, thereby realizing the assembly of the top groove plate 41 and the bottom groove plate 42; pulling down the pull-ring elastic piece 467 can cause it to be compressed while separating the positioning protrusion 468 from the positioning hole 465, and sliding the top groove plate 41 in the reverse direction can separate it from the bottom groove plate 42. In this way, this assembly link adopts a bolt-free connection method, which is ingeniously designed and has a good positioning effect, and is beneficial to improving the utilization rate of the clamping tooling 4.

[0044] As Figure 10As shown in the figure, in order to improve the positioning effect of the pull-ring elastic piece 467 on the spring fork plate 464 and the plug plate 461, the pull-ring elastic piece 467 provided by the present invention includes a pull-ring body 4671. A pair of Y-shaped elastic pieces 4672 are arranged at the top of the pull-ring body 4671. Positioning protrusions 468 are arranged on the Y-shaped ends of the elastic pieces 4672. That is to say, there are a total of four positioning protrusions 468 for a pair of elastic pieces 4672, and the positioning protrusions 468 on the same side have a reasonable span. The positioning quality is improved by increasing the positioning nodes and their distribution spans. The gap between adjacent elastic pieces 4672 is the compression allowance flowing out during the downward passive movement of the two, which is convenient for the positioning protrusions 468 to effectively disengage from the corresponding positioning holes 465 under manual operation, and is convenient for releasing the assembly relationship between the top groove plate 41 and the bottom groove plate 42.

[0045] As Figure 8 shown in the figure, in order to improve the adjustability of the clamping tooling 4 on the scraper conveyor 2, from the perspective of its direct installation site, the connection component 3 provided by the present invention has a flexible adjustment mechanism. Specifically, the connection component 3 includes a wedge block 31 arranged on the brackets of the top groove plate 41 and the bottom groove plate 42. A connecting rod 32 threadedly connected to it is arranged in the middle of the wedge block 31. A hinge joint 33 is arranged at the end of the connecting rod 32. The hinge joint 33 is arranged at one end of the connecting plate 34. A kidney-shaped hole is arranged at the other end of the connecting plate 34. The kidney-shaped hole is connected to the scraper 21 through a bolt 35. Among them, the wedge block 31 can ensure the stable abutting stability of the docking surfaces of the top groove plate 41, the bottom groove plate 42 and the connection component 3. The connecting rod 32 can control its actual extended length by means of screw adjustment. Moreover, since the end of the connecting rod 32 is to be installed on the connecting plate 34 through the hinge joint 33, the actual extended length of the connecting rod 32 can control the actual vertical distance from both ends of the clamping tooling 4 to the scraper 21. Coupled with the fact that the kidney-shaped hole provides a certain adjustment margin for the cooperation between the bolt 35 and the scraper 21, the assembly angle of the clamping tooling 4 on the scraper conveyor 2 can be effectively adjusted. Furthermore, since the actual installation nodes of the clamping tooling 4 are all located on a single scraper 21, the clamping tooling 4 can complete the corresponding detour transition at the cyclic turning-back position of the scraper conveyor 2.

[0046] In order to ensure the rotation effect of the watch case workpiece 5, the rotary joint 44 provided by the present invention includes a base 442. A top seat 441 is provided on the top of the base 442. A socket nested with the spring chuck 45 is provided between the top seat 441 and the base 442. The top seat 441 and the base 442 are connected by a plurality of screws. The top seat 441 and the base 442 are installed on the top groove plate 41 from the upper and lower ends of the counterbore 43. The vertical positional relationship between the top seat 441 and the base 442 can be locked by screws, and a corresponding socket is provided for the spring chuck 45. The lower half of the spring chuck 45 is nested and matched with the socket and has reasonable axial limit nodes. Thus, on the basis of ensuring that the spring chuck 45 has flexible rotation ability, the probability of its vertical large-displacement jump is reduced.

[0047] As Figure 2 and Figure 3 shown, considering the recovery of quicksand, the present invention is provided with a support platform 8 under the scraper conveyor 2. A plurality of chutes 81 distributed along its length direction are provided in the support platform 8. The chutes 81 can correspond to the working range of the quicksand polishing machine 7. The chutes 81 are used to recover quicksand. A diversion chute (not shown in the figure) is provided at the discharge end of the chute 81. The length direction of the diversion chute is consistent with the conveying direction of the scraper conveyor 2. The discharge end of the diversion chute can be directly connected to the filtering equipment and the circulation pipeline in the workshop, thereby completing the recovery of quicksand.

[0048] The above are only the preferred embodiments of the present invention, and are not limitations on the present invention in other forms. Any person skilled in the art may use the technical content disclosed above to make changes or modifications into equivalent embodiments with equivalent changes and apply them to other fields. However, as long as it does not depart from the technical solution content of the present invention, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention still belong to the protection scope of the technical solution of the present invention.

Claims

1. A grinding device with a watch case clamping tooling, comprising a frame, wherein a conveyor is arranged on the frame, and is characterized in that, The conveyor is a scraper conveyor, which includes a number of scrapers distributed along its conveying direction. Two connection components extending in opposite directions are provided at both ends of the scraper. A set of clamping tools is provided on the two connection components. Adjacent clamping tools are distributed in a zigzag pattern on the scraper conveyor. The clamping tool includes a top groove plate and a bottom groove plate. A number of countersunk holes are provided on the top groove plate along its length direction. A rotary joint is provided in the countersunk hole. A spring chuck is provided at the top center of the rotary joint. The spring chuck is used for clamping cooperation with the watch case workpiece. A grinding machine box spanning above the scraper conveyor is provided on the frame. A sand flow polishing machine is provided inside the grinding machine box. The sand flow polishing machine includes a lifting groove. A number of sand flow spray nozzles distributed in a V shape are provided at the bottom of the lifting groove. A number of spray ports inclined upward and downward are provided inside the sand flow spray nozzle. A supply pipeline assembly communicating with all the sand flow spray nozzles is provided in the lifting groove. The supply end of the supply pipeline assembly is provided with a sand flow box. A lifting oil cylinder connected thereto is provided at the top of the lifting groove. The lifting oil cylinder and the sand flow box are provided outside the top of the grinding machine box.

2. The grinding equipment with a watch case clamping tooling according to claim 1, characterized in that, The supply pipeline assembly includes a number of spray pipes communicating with the sand flow spray nozzles one by one. A solenoid valve is provided on the spray pipe. A distribution branch pipe is provided at the input end of the spray pipe. A distribution main pipe is provided at the input end of the distribution branch pipe. Pump pipes telescopically cooperating with both ends of the distribution main pipe are provided. A jet pump is provided at the top of the pump pipe. The jet pump is provided inside the sand flow box.

3. A grinding device with a watch case clamping tooling according to claim 2, characterized in that, The sand flow spray nozzle includes a conical section. A first inner conical section and a second inner conical section are provided at intervals up and down inside the conical section. A threaded port is provided at the top of the conical section. A communication groove is provided below the threaded port. A number of channels extending along the conical section are provided at the edge of the communication groove. A number of downward-inclined lower injection ports are provided on the first inner conical section. A number of upward-inclined upper injection ports are provided on the second inner conical section. A connection nozzle threadedly connected to the threaded port is provided at the top of the threaded port. A core rod threadedly connected to the center of the conical section is provided at the center of the connection nozzle. An injection port communicating with the communication groove is provided between the core rod and the connection nozzle.

4. The grinding equipment with a watch case clamping tooling according to claim 3, characterized in that, Adjusting long holes cooperating with the sand flow spray nozzles are provided at the bottom of the lifting groove.

5. A grinding device with a watch case clamping tooling according to claim 3 or 4, characterized in that, A limiting rod used for nested cooperation with the center of the spring chuck is provided at the center inside the conical section.

6. The grinding equipment with a watch case clamping tooling according to claim 1, characterized in that, At least two pairs of quick plug-in components are provided on both sides of the top groove plate and the bottom groove plate. The quick plug-in component includes a plug board provided at the bottom of the top groove plate. The plug board is L-shaped and its L-shaped opening is the socket. The plug board is slidably mated with the sliding opening provided on the bottom groove plate. A spring fork board is provided at the bottom of the bottom groove plate. The spring fork board is provided with fork openings cooperating with both sides of the plug board. A Y-shaped inner clamping opening is provided inside the plug board. A pull-ring elastic piece is provided in the Y-shaped inner clamping opening. A positioning protrusion is provided on the pull-ring elastic piece. The positioning protrusion is mated with the positioning holes provided on both sides of the spring fork board.

7. A grinding device with a watch case clamping tooling according to claim 6, characterized in that, The pull-ring elastic piece includes a pull-ring body. A pair of Y-shaped elastic pieces are provided at the top of the pull-ring body.

8. A grinding device with a watch case clamping tooling according to claim 1 or 7, characterized in that, The connecting component includes a wedge block disposed between the top chute plate and the bottom chute plate bracket. A connecting rod threadedly connected thereto is provided in the middle of the wedge block. A hinge joint is provided at the end of the connecting rod. The hinge joint is disposed at one end of a connecting plate. A kidney-shaped hole is provided at the other end of the connecting plate. The kidney-shaped hole is connected to the scraper by bolts.

9. The grinding equipment with a watch case clamping tooling according to claim 1, characterized in that, The rotary joint includes a base. A top seat is provided at the top of the base. A socket nested with a spring collet is provided between the top seat and the base. The top seat and the base are connected by a plurality of screws.

10. A grinding device with a watch case clamping tooling according to claim 1, characterized in that, A support platform is provided below the scraper conveyor. A plurality of chutes distributed along its length direction are provided in the support platform. The chutes are used to recover quicksand. A diversion chute is provided at the discharge end of the chute. The length direction of the diversion chute is consistent with the conveying direction of the scraper conveyor.

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