Grinding equipment with meter case clamping tool

Abstract

The invention belongs to the field of grinding equipment, and provides grinding equipment with a meter case clamping tool, the grinding equipment comprises a rack, a scraper conveyor, a connecting assembly and the clamping tool, the clamping tool comprises a top groove plate and a bottom groove plate, the top groove plate is provided with a counterbore, the counterbore is internally provided with a rotating joint and a spring chuck, and the bottom groove plate is provided with a rotating shaft; the spring chuck is used for being matched with a meter shell workpiece in a clamping mode, a grinding machine box stretching across the upper portion of the scraper conveyor is arranged on the machine frame, a quicksand polishing machine is arranged in the grinding machine box and comprises a lifting groove, a quicksand spraying cylinder, a spraying opening and a supply pipeline assembly, and a quicksand box is arranged at the supply end of the supply pipeline assembly. A lifting oil cylinder connected with the lifting groove is arranged at the top of the lifting groove, and the lifting oil cylinder and the quicksand box are arranged on the outer side of the top of the grinding machine box. The device is reasonable in design, capable of achieving assembly line work, beneficial to reducing the working intensity of workers and improving the production efficiency and the production quality and suitable for large-scale popularization.

Description

Technical Field

[0001] The invention belongs to the field of grinding equipment, and in particular relates to a grinding equipment with a watch case clamping tool. Background Art

[0002] During the production process, watches generally need to go through raw material cutting, forging and stamping, machining, grinding and polishing, surface treatment, assembly and testing and other production processes. Among them, grinding and polishing is a grinding operation that removes materials. After rough grinding and fine polishing, the appearance texture and glossiness of the watch case can be improved. Sandpaper, grinding wheels and other tools are usually used to polish watches, gradually from coarse to fine grains to remove burrs and unevenness on the surface. Polishing uses polishing wheels and polishing paste to make the surface of the watch case have a mirror-like gloss effect.

[0003] At present, rough grinding is generally done by mechanical equipment, and then workers do targeted fine grinding. Fine grinding of watch cases one by one is inefficient, especially for large-scale batch production in factories. In order to improve the efficiency of fine grinding, in general, if fine grinding is done manually, multiple watch cases will be connected in series to a rod-shaped tool through a spacing fixture. By holding the rod-shaped tool, multiple watch cases can be fine-ground at one time. Even so, the workers' workload is still very high, and they also need to grind and polish both sides. In addition, the quality of fine grinding will be uneven, which increases the cost of the workshop. Summary of the invention

[0004] In view of the above-mentioned technical problems existing in the fine grinding operation of watches, the present invention proposes a grinding device with a watch case clamping tooling which has a reasonable design, can realize assembly line operation, is conducive to reducing the workload of workers and is conducive to improving production efficiency and production quality.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is that the present invention provides a grinding equipment with a watch case clamping tool, including a frame, a conveyor is arranged on the frame, and is characterized in that the conveyor is a scraper conveyor, the scraper conveyor includes a plurality of scrapers distributed along its conveying direction, two ends of the scraper are provided with two reversely extending connecting components, a set of clamping tool is arranged on the two connecting components, and the adjacent clamping tools are distributed in a zigzag shape on the scraper conveyor, the clamping tool includes a top groove plate and a bottom groove plate, the top groove plate is provided with a plurality of countersunk holes distributed along its length direction, a swivel joint is arranged in the countersunk hole, and the swivel joint A spring chuck is arranged at the top center, and the spring chuck is used for clamping and cooperating with the watch case workpiece. A grinding machine box is arranged on the frame and spans above the scraper conveyor. A quicksand polishing machine is arranged inside the grinding machine box. The quicksand polishing machine includes a lifting groove, and a plurality of quicksand spraying tubes distributed in a V shape are arranged at the bottom of the lifting groove. A plurality of nozzles inclined upward and inclined downward are arranged inside the quicksand spraying tube. A supply pipeline assembly connected to all the quicksand spraying tubes is arranged in the lifting groove, and a quicksand box is arranged at the supply end of the supply pipeline assembly. A lifting cylinder connected to the lifting groove is arranged at the top of the lifting groove, and the lifting cylinder and the quicksand box are arranged on the top outer side of the grinding machine box.

[0006] Preferably, the supply pipeline assembly includes a plurality of nozzles connected one by one with the quicksand spraying tubes, the nozzles are provided with solenoid valves, the input ends of the nozzles are provided with distribution branches, the input ends of the distribution branches are provided with distribution main pipes, both ends of the distribution main pipes are provided with pump pipes which cooperate with them telescopically, the top of the pump pipes is provided with a jet pump, and the jet pump is arranged inside the quicksand box.

[0007] Preferably, the quicksand blower comprises a conical section, the interior of which is provided with a first inner conical section and a second inner conical section spaced apart from each other in an upper and lower direction, a threaded opening is provided at the top of the conical section, a connecting groove is provided below the threaded opening, a plurality of channels extending along the conical section are provided at the edge of the connecting groove, a plurality of downwardly inclined lower shooting openings are provided on the first inner conical section, a plurality of upwardly inclined upper shooting openings are provided on the second inner conical section, a connecting nozzle threadedly connected thereto is provided at the top of the threaded opening, a core rod threadedly connected to the center of the conical section is provided at the center of the connecting nozzle, and an injection port connected to the connecting groove is provided between the core rod and the connecting nozzle.

[0008] Preferably, the bottom of the lifting trough is provided with an adjustment long hole cooperating with the quicksand spraying tube.

[0009] Preferably, a limiting rod is provided at the inner center of the tapered section for nesting with the center of the spring clamp.

[0010] Preferably, at least two pairs of quick-connect components are provided on both sides of the top groove plate and the bottom groove plate, and the quick-connect components include a plug plate arranged at the bottom of the top groove plate, the plug plate is L-shaped and its L-shaped opening is a plug opening, the plug plate slides with a sliding opening arranged on the bottom groove plate, a spring fork plate is provided at the bottom of the bottom groove plate, the spring fork plate is provided with a fork opening that cooperates with both sides of the plug plate, a Y-shaped inner clamping opening is provided inside the plug plate, a pull ring spring sheet is provided in the inner clamping opening, a positioning protrusion is provided on the pull ring spring sheet, and the positioning protrusion cooperates with the positioning holes provided on both sides of the spring fork plate.

[0011] Preferably, the pull ring spring piece comprises a pull ring body, and a pair of Y-shaped spring pieces are arranged on the top of the pull ring body.

[0012] Preferably, the connecting assembly includes a wedge block arranged on the top trough plate and the bottom trough plate bracket, a connecting rod threadedly connected to the wedge block is arranged in 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 the connecting plate, and a waist-shaped hole is arranged at the other end of the connecting plate, and the waist-shaped hole is connected to the scraper by bolts.

[0013] Preferably, the rotary joint comprises a base, a top seat is arranged on the top of the base, a sleeve for nesting with a spring chuck is arranged between the top seat and the base, and the top seat and the base are connected by a plurality of screws.

[0014] Preferably, a support platform is provided below the scraper conveyor, and a plurality of chutes distributed along the length direction thereof are provided in the support platform, the chutes are used to recover quicksand, and a guide groove is provided at the discharge end of the chute, and the length direction of the guide groove is consistent with the conveying direction of the scraper conveyor.

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

[0016] The present invention provides a grinding device with a watch case clamping fixture. In the fine grinding process, the watch case workpiece is mounted on the clamping fixture by adopting an assembly line method, and the watch case workpiece is conveyed to the grinding machine box by a scraper conveyor. The front and back surfaces of the watch case workpieces on the two clamping fixtures are spray-polished by a flowing sand polishing machine at the same time. The finely ground watch case workpiece is quickly removed by a worker or a manipulator near the end of the scraper conveyor, which not only improves the efficiency of the fine grinding operation, but also effectively ensures the fine grinding quality. The device is reasonably designed, can realize assembly line operation, is conducive to reducing the work intensity of workers, and is conducive to improving production efficiency and production quality, and is suitable for large-scale promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 An axonometric view of a grinding device with a watch case clamping fixture provided in an embodiment;

[0019] Figure 2 A front view of a grinding device with a watch case clamping fixture provided in an embodiment;

[0020] Figure 3 A cross-sectional view of a grinding device with a watch case clamping tooling in the GG direction provided in an embodiment;

[0021] Figure 4 An axonometric view of the internal structure of the lifting tank provided in the embodiment;

[0022] Figure 5 A top view of the internal structure of the lifting tank provided in the embodiment;

[0023] Figure 6 A cross-sectional view of a quicksand spraying tube provided in an embodiment;

[0024] Figure 7 A top view of a scraper conveyor and a clamping tool provided in an embodiment;

[0025] Figure 8 An exploded view of a clamping fixture, a connecting assembly and a scraper provided in an embodiment;

[0026] Fig. 9 for Figure 7 A magnified schematic diagram of the structure in the middle;

[0027] Fig.10 for Figure 8 A magnified schematic diagram of structure B in the middle;

[0028] Fig.11 A front view of a clamping fixture, a connecting assembly and a scraper provided in an embodiment;

[0029] Fig.12 A cross-sectional view of the clamping fixture, the connecting assembly and the scraper provided in the embodiment in the EE direction;

[0030] Fig.13 A side view of a clamping fixture, a connecting assembly and a scraper provided in an embodiment;

[0031] Fig.14 A three-dimensional diagram of a clamping fixture, a connecting assembly and a scraper provided in an embodiment;

[0032] In the above figures:

[0033] 1. Frame; 2. Scraper conveyor; 21. Scraper; 3. Connecting assembly; 31. Wedge; 32. Connecting rod; 33. Hinge; 34. Connecting plate; 35. Bolt; 4. Clamping fixture; 41. Top slot plate; 42. Bottom slot plate; 43. Countersunk hole; 44. Rotary joint; 441. Top seat; 442. Base; 45. Spring chuck; 46. Quick plug assembly; 461. Plug plate; 462. Socket; 463. Slide; 464. Spring fork plate; 465. Positioning hole; 466. Inner clamp; 467. Pull ring spring; 4671. Pull ring body; 4672. Spring; 468. Positioning protrusion; 5. Case workpiece; 6 , grinding machine box; 7, quicksand polishing machine; 71, lifting trough; 72, quicksand spray gun; 721, conical section; 722, first inner cone section; 723, second inner cone section; 724, threaded mouth; 725, connecting groove; 726, channel; 727, connecting nozzle; 728, core rod; 729, injection port; 73, nozzle; 731, upper nozzle; 732, lower nozzle; 74, supply pipeline assembly; 741, nozzle; 742, solenoid valve; 743, distribution branch pipe; 744, distribution main pipe; 745, pump pipe; 75, quicksand box; 76, lifting cylinder; 77, adjusting long hole; 78, limit rod; 8, support platform; 81, chute. DETAILED DESCRIPTION

[0034] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict. For the convenience of description, if the words "upper", "lower", "left" and "right" appear below, they only indicate that the upper, lower, left and right directions are consistent with the accompanying drawings themselves, and do not limit the structure.

[0035] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0036] Examples, such as Figure 1-Figure 14As shown, the present invention provides a grinding device with a case clamping fixture, including 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 ends of the scraper 21 are provided with two connecting components 3 extending in opposite directions, and a group of clamping fixtures 4 are arranged on the two connecting components 3. The adjacent clamping fixtures 4 are distributed in a zigzag shape on the scraper conveyor 2. The clamping fixture 4 includes a top groove plate 41 and a bottom groove plate 42. The top groove plate 41 is provided with a plurality of countersunk holes 43 distributed along its length direction, and a rotary joint 44 is arranged in the countersunk hole 43. A spring chuck is arranged at the top center of the rotary joint 44. 45, the spring chuck 45 is used to clamp and cooperate with the watch case workpiece 5, the frame 1 is provided with a grinding machine box 6 spanning above the scraper conveyor 2, the grinding machine box 6 is provided with a quick sand polishing machine 7 inside, the quick sand polishing machine 7 includes a lifting groove 71, the bottom of the lifting groove 71 is provided with a plurality of quick sand spraying tubes 72 distributed in a V shape, the quick sand spraying tube 72 is provided with a plurality of nozzles 73 inclined upward and inclined downward, the lifting groove 71 is provided with a supply pipeline assembly 74 connected to all the quick sand spraying tubes 72, the supply end of the supply pipeline assembly 74 is provided with a quick sand box 75, the top of the lifting groove 71 is provided with a lifting cylinder connected thereto, the lifting cylinder and the quick sand box 75 are arranged on the outside of the top of the grinding machine box 6.

[0037] Specifically, the frame 1 provided by the present invention can support the scraper conveyor 2 and the grinding machine box 6. The scraper conveyor 2 is a cyclic transmission operation mode; at the beginning of the scraper conveyor 2, the staff or the workshop manipulator can install the case workpiece 5 on the clamping fixture 4, and the scraper conveyor 2 transmits the case workpiece 5 to the grinding machine box 6. In the process of passing under the flowing sand polishing machine 7, the scraper conveyor 2 can suspend the transmission action, which is convenient for leaving a certain operating time for the flowing sand polishing machine 7 on the one hand, and leaving sufficient time interval for taking and placing the case workpiece 5 on the other hand. The distribution characteristics of the clamping fixture 4 on the scraper conveyor 2 are, on the one hand, conducive to the workers and the manipulator to take and place the case workpiece 5, avoiding the situation of cross interference, and on the other hand, it can ensure that the clamping fixture 4 completes a relatively smooth transition at the cyclic return position of the scraper conveyor 2, and the clamping fixture 4 also completes the cyclic transmission on the scraper conveyor 2, and each time only needs to directly take and place the case workpiece 5 in a reasonable time interval.

[0038] Furthermore, the lifting cylinder of the quicksand polishing machine 7 can drive the lifting slot 71 to perform lifting and lowering movements, especially so that all the watch case workpieces 5 on the two adjacent clamping fixtures 4 correspond to a quicksand spray tube 72, and the nozzle inside the quicksand spray tube 72 faces the upper and lower surfaces of the watch case workpiece 5. When the jet pump in the quicksand box 75 is started, the front and back surfaces of the watch case workpieces 5 on the two clamping fixtures 4 can be sprayed and polished at the same time. In addition, during the spray polishing process, the power of the spray can drive the rotary joint 44 to drive the watch case workpiece 5 to produce a corresponding rotation, thereby completing the full-face spray polishing without turning the watch case over. The watch case workpiece 5 after fine grinding is quickly removed by the staff or the manipulator near the end position of the scraper conveyor 2. From the principle of grinding and polishing, quicksand jet polishing is a technology that uses a high-speed flowing sand 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 complex-shaped workpieces, low labor intensity and good environmental protection. In this way, the present invention not only improves the efficiency of fine grinding operation, but also effectively guarantees the quality of fine grinding and effectively reduces the work intensity of workers on the basis of realizing assembly line operation.

[0039] like Figure 4 As shown, in order to ensure the supply performance of the sand particles sprayed in the quicksand spraying 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 nozzles 741 connected one by one with the quicksand spraying tube 72, and a solenoid valve 742 is arranged on the nozzle 741. A distribution branch pipe 743 is arranged at the input end of the nozzle 741, and a distribution main pipe 744 is arranged at the input end of the distribution branch pipe 743. A pump pipe 745 that is telescopically matched with the distribution main pipe 744 is arranged at both ends of the distribution main pipe 744, and a jet pump is arranged at the top of the pump pipe 745. The jet pump is arranged inside the quicksand box 75. Among them, the jet pump is used to provide pressure to the spray path; the pump pipe 745 and the two ends of the distribution main pipe 744 are nested in design and have a certain telescopic matching stroke, thereby ensuring that when the lifting cylinder drives the lifting slot 71 to perform the lifting action, 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 cardboard arranged in the lifting groove 71. From the perspective of the jetting path, the distribution main pipe 744 can simultaneously provide quick sand medium to different distribution branch pipes 743, and the electromagnetic valve 742 controls the on-off and actual flow rate of the jet terminal. In this way, the fluid medium used for jet grinding enters the quick sand spraying tube 72 in an orderly manner from the quick sand box 75, the pump pipe 745, the distribution main pipe 744, the distribution branch pipe 743, and the nozzle 741, and then the quick sand spraying tube 72 sprays the quick sand to the watch case workpiece 5, thereby completing an effective jet grinding operation.

[0040] like Figure 6As shown, in order to ensure the efficiency of quicksand jet grinding, the quicksand spraying tube 72 provided by the present invention includes a conical section 721, and the interior of the conical section 721 is provided with a first inner conical section 722 and a second inner conical section 723 spaced apart from each other, a threaded opening 724 is provided at the top of the conical section 721, a connecting groove 725 is provided below the threaded opening 724, and a plurality of channels 726 extending along the conical section 721 are provided at the edge of the connecting groove 725, a plurality of lower shooting openings 732 inclined downward are provided on the first inner conical section 722, a plurality of upper shooting openings 731 inclined upward are provided on the second inner conical section 723, a connecting nozzle 727 threadedly connected thereto is provided at the top of the threaded opening 724, a core rod 728 threadedly connected to the center of the conical section 721 to ensure the centering is provided at the center of the connecting nozzle 727, and an injection port 729 connected to the connecting groove 725 is provided between the core rod 728 and the connecting nozzle 727. Among them, the first inner cone section 722 provides a spraying base for the lower nozzle 732, the lower nozzle 732 faces the upper surface of the case, and the spraying angles of adjacent lower nozzles 732 are designed to be different angles; the second inner cone section 723 provides a spraying base for the upper nozzle 731, the upper nozzle 731 faces the lower surface of the case, and the spraying angles of adjacent upper nozzles 731 are designed to be different angles. In this way, during the jet grinding process, the fluid power sprayed by different nozzles 73 can drive the rotary joint 44 to drive the case workpiece 5 to produce corresponding rotation, and the upper and lower surfaces of the case workpiece 5 are sprayed with sand flow to perform corresponding operations, thereby completing all-round jet polishing, without the need to turn the case over, and polishing and grinding can also be completed for complex positions such as the angular parts inside the lugs, thereby ensuring the jet grinding efficiency of the current sand polishing machine 7.

[0041] like Figure 5 As shown, considering that the present invention provides a certain adjustment margin for the installation angle of the clamping fixture 4 on the scraper 21, the present invention is matched with an adjustment slot 77 that cooperates with the sand jetting tube 72 at the bottom of the lifting slot 71. In this way, by adjusting the actual position of the sand jetting tube 72 in the adjustment slot 77, the sand jetting tube 72 can be controlled to correspond to the corresponding case workpiece 5, which not only ensures the jet grinding effect of the equipment, but also ensures the comprehensive utilization rate of the equipment.

[0042] like 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 sand jetting tube 72, the present invention is provided with a limit rod 78 for nesting with the center of the spring chuck 45 at the inner center of the conical section 721. This can reduce the flow of sand particles entering the spring chuck 45 on the one hand, so that the ejected sand flow can fully contact and secondary contact with the watch case; on the other hand, it can reduce the retention and clogging of sand particles in the rotary joint 44 and the spring chuck 45, which is conducive to the recovery of sand particles; on the other hand, the shoulder on the side of the limit rod 78 can prevent the rotary joint 44 and the spring chuck 45 from vertical movement, which can reduce the probability of the watch case workpiece 5 detaching from the spring chuck 45 to a certain extent.

[0043] like Figure 8 As shown, in order to improve the assembly reliability of the clamping tool 4, at least two pairs of quick-connect components 46 are provided on both sides of the top slot plate 41 and the bottom slot plate 42 provided by the present invention. The quick-connect components 46 include a plug plate 461 arranged at the bottom of the top slot plate 41, the plug plate 461 is L-shaped and its L-shaped opening is a plug opening 462, the plug plate 461 is slidably matched with a sliding opening 463 arranged on the bottom slot plate 42, a spring fork plate 464 is arranged at the bottom of the bottom slot plate 42, the spring fork plate 464 is provided with a fork opening matched with both sides of the plug plate 461, a Y-shaped inner clamping opening 466 is arranged inside the plug plate 461, a pull ring spring piece 467 is arranged in the inner clamping opening 466, a positioning protrusion 468 is arranged on the pull ring spring piece 467, and the positioning protrusion 468 is matched with the positioning holes 465 arranged 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 scraper 21 and the clamping tool 4; the top groove plate 41 slides against the top surface of the bottom groove plate 42 by sliding, and the plug plate 461 can gradually sink from the sliding opening 463 until the plug opening 462 is inserted into the end of the sliding opening 463; at the same time, the fork of the spring fork plate 464 is forked at the rear end of the plug plate 461, and the positioning protrusion 468 of the pull ring spring sheet 467 is engaged 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 spring sheet 467 can compress it and disengage the positioning protrusion 468 from the positioning hole 465, and sliding the top groove plate 41 in the opposite direction can separate it from the bottom groove plate 42. In this way, this assembly link adopts a bolt-free connection method, which is cleverly designed and has a good positioning effect, which is conducive to improving the utilization rate of the clamping tool 4.

[0044] like Fig.10As shown, in order to improve the positioning effect of the pull ring spring piece 467 on the spring fork plate 464 and the plug plate 461, the pull ring spring piece 467 provided by the present invention includes a pull ring body 4671, and a pair of Y-shaped spring pieces 4672 are arranged on the top of the pull ring body 4671, and positioning protrusions 468 are arranged on the Y-shaped ends of the spring pieces 4672, which is equivalent to a pair of spring pieces 4672 having a total of four positioning protrusions 468, and the positioning protrusions 468 on the same side have a reasonable span, and the positioning quality is improved by increasing the positioning nodes and their distribution spans; the gap between adjacent spring pieces 4672 is the compression margin that flows out during the passive downward movement of the two, so that the positioning protrusions 468 can be effectively disengaged from the corresponding positioning holes 465 under manual operation, so as to release the assembly relationship between the top groove plate 41 and the bottom groove plate 42.

[0045] like Figure 8 As shown, in order to improve the adjustability of the clamping fixture 4 on the scraper conveyor 2, the connection assembly 3 provided by the present invention has a flexible adjustment mechanism from the direct installation position. Specifically, the connection assembly 3 includes a wedge block 31 arranged on the bracket of the top groove plate 41 and the bottom groove plate 42, a connecting rod 32 threadedly connected to the wedge block 31 is arranged in the middle of the wedge block 31, and a hinge joint 33 is arranged at the end of the connecting rod 32, and the hinge joint 33 is arranged at one end of the connecting plate 34, and the other end of the connecting plate 34 is provided with a waist-shaped hole, and the waist-shaped hole is connected to the scraper 21 through a bolt 35. Among them, the wedge block 31 can ensure that the butt joint surfaces of the top groove plate 41, the bottom groove plate 42 and the connecting assembly 3 have stable abutment stability, and the connecting rod 32 can control its actual extension length by means of spiral 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 extension length of the connecting rod 32 can control the actual vertical distance from the two ends of the clamping fixture 4 to the scraper 21. In addition, the waist-shaped hole provides a certain adjustment margin for the cooperation between the bolt 35 and the scraper 21, so that the assembly angle of the clamping fixture 4 on the scraper conveyor 2 can be effectively adjusted. Furthermore, since the actual installation nodes of the clamping fixture 4 are all located on a single scraper 21, the clamping fixture 4 can complete the corresponding roundabout transition at the circular return 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 arranged on the top of the base 442, a sleeve for nesting with the spring chuck 45 is arranged between the top seat 441 and the base 442, and the top seat 441 and the base 442 are connected by multiple 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 countersunk hole 43, and the vertical position relationship between the top seat 441 and the base 442 can be locked by screws, and a corresponding sleeve is provided for the spring chuck 45, the lower half of the spring chuck 45 is nested with the sleeve, and has a reasonable axial limit node, thereby ensuring that the spring chuck 45 has a flexible rotation ability and reducing the probability of large vertical displacement jump.

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

[0048] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A grinding device with a watch case clamping tool, comprising a frame, on which a conveyor is arranged, characterized in that: The conveyor is a scraper conveyor, which includes a plurality of scrapers distributed along its conveying direction, two connecting components extending in opposite directions are arranged at both ends of the scraper, and a set of clamping fixtures are arranged on the two connecting components, and the adjacent clamping fixtures are distributed in a zigzag shape on the scraper conveyor. The clamping fixtures include a top groove plate and a bottom groove plate, and the top groove plate is provided with a plurality of countersunk holes distributed along its length direction, and a swivel joint is arranged in the countersunk hole, and a spring chuck is arranged at the top center of the swivel joint, and the spring chuck is used to clamp and cooperate with the watch case workpiece. A grinding machine box is arranged on the frame and spans over the scraper conveyor. A quicksand polishing machine is arranged inside the grinding machine box. The quicksand polishing machine includes a lifting trough. A plurality of quicksand spraying tubes distributed in a V shape are arranged at the bottom of the lifting trough. A plurality of nozzles inclined upward and downward are arranged inside the quicksand spraying tubes. A supply pipeline assembly connected to all quicksand spraying tubes is arranged in the lifting trough. A quicksand box is arranged at the supply end of the supply pipeline assembly. A lifting cylinder connected to the lifting trough is arranged at the top. The lifting cylinder and the quicksand box are arranged on the outside of the top of the grinding machine box.

2. A grinding device with a watch case clamping fixture according to claim 1, characterized in that: The supply pipeline assembly includes a plurality of nozzles connected one by one with the quicksand spraying tubes, the nozzles are provided with solenoid valves, the input ends of the nozzles are provided with distribution branches, the input ends of the distribution branches are provided with distribution main pipes, both ends of the distribution main pipes are provided with pump pipes that are telescopically matched therewith, the top of the pump pipes is provided with a jet pump, and the jet pump is arranged inside the quicksand box.

3. A grinding device with a watch case clamping fixture according to claim 2, characterized in that: The quicksand blasting tube includes a conical section, the interior of which is provided with a first inner conical section and a second inner conical section spaced apart from each other in an upper and lower direction, a threaded opening is provided at the top of the conical section, a connecting groove is provided below the threaded opening, a plurality of channels extending along the conical section are provided at the edge of the connecting groove, a plurality of downwardly inclined lower shooting openings are provided on the first inner conical section, a plurality of upwardly inclined upper shooting openings are provided on the second inner conical section, a connecting nozzle threadedly connected thereto is provided at the top of the threaded opening, a core rod threadedly connected to the center of the conical section is provided at the center of the connecting nozzle, and an injection port connected to the connecting groove is provided between the core rod and the connecting nozzle.

4. A grinding device with a watch case clamping fixture according to claim 3, characterized in that: The bottom of the lifting groove is provided with an adjusting long hole matched with the quicksand spraying tube.

5. A grinding device with a watch case clamping fixture according to claim 3 or 4, characterized in that: A limiting rod is arranged at the inner center of the tapered section for nesting with the center of the spring clamp.

6. The grinding device with a watch case clamping fixture according to claim 1, characterized in that: At least two pairs of quick-connect components are arranged on both sides of the top slot plate and the bottom slot plate, and the quick-connect components include a plug plate arranged at the bottom of the top slot plate, the plug plate is L-shaped and its L-shaped opening is a plug opening, the plug plate is slidably matched with a sliding opening arranged on the bottom slot plate, a spring fork plate is arranged at the bottom of the bottom slot plate, the spring fork plate is provided with a fork opening matched with both sides of the plug plate, a Y-shaped inner clamping opening is arranged inside the plug plate, a pull ring spring piece is arranged in the inner clamping opening, a positioning protrusion is arranged on the pull ring spring piece, and the positioning protrusion matches with the positioning holes arranged on both sides of the spring fork plate.

7. A grinding device with a watch case clamping fixture according to claim 6, characterized in that: The pull ring spring piece comprises a pull ring body, and a pair of Y-shaped spring pieces are arranged on the top of the pull ring body.

8. A grinding device with a watch case clamping fixture according to claim 1 or 7, characterized in that: The connecting assembly includes a wedge block arranged on the top trough plate and the bottom trough plate bracket, a connecting rod threadedly connected to the wedge block is arranged in 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 the connecting plate, and a waist-shaped hole is arranged at the other end of the connecting plate, and the waist-shaped hole is connected to the scraper by bolts.

9. The grinding device with a watch case clamping fixture according to claim 1, characterized in that: The rotary joint comprises a base, a top seat is arranged on the top of the base, a sleeve for nesting with a spring clamp is arranged between the top seat and the base, and the top seat and the base are connected by a plurality of screws.

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

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