Abrasive belt grinding machine for shadow in watchcase

Abstract

The utility model provides a watchcase internal shadow abrasive belt grinding machine. The watchcase internal shadow abrasive belt grinding machine comprises a case, a clamping mechanism and an abrasive belt grinding mechanism, the abrasive belt grinding mechanism comprises an X-axis driving module, a Z-axis driving module, a feeding driving module and an abrasive belt grinding assembly which are connected in sequence; the abrasive belt grinding assembly comprises a mounting plate, a driving wheel, a second rotary driving device, a guide wheel set, a floating assembly and an abrasive belt. The driving wheel is mounted at the right part of the mounting plate; the second rotary driving device controls the driving wheel to rotate; the guide wheel group is mounted in the middle of the mounting plate; the floating assembly is mounted at the left end of the mounting plate and comprises a swinging floating seat and a lifting floating seat; the right part of the swinging floating seat is mounted on the mounting plate through a first flexible assembly in a manner of swinging up and down; the lifting floating seat is mounted at the left part of the swinging floating seat in an up-down sliding manner through a second flexible assembly; a V-shaped guide groove is formed in the right end of the lifting floating seat; and the abrasive belt is wound among the driving wheel, the guide wheel group and the V-shaped guide groove.

Description

Technical Field

[0001] The utility model relates to the technical field of grinding equipment, and particularly relates to a sand belt grinding machine for the inner shadow of a watch case. Background Art

[0002] During the processing of a watch case, it is necessary to grind the inner shadow of the watch case. Since the processing part of the inner shadow is inside the watch case, the grinding process is difficult, and the grinding force needs to be well controlled during the processing, otherwise the product is easily damaged. At present, manual grinding is usually adopted, which has low efficiency and low processing accuracy and cannot meet the production requirements. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a sand belt grinding machine for the inner shadow of a watch case to solve the problems mentioned in the background art.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A sand belt grinding machine for the inner shadow of a watch case, comprising a machine case, a clamping mechanism and a sand belt grinding mechanism installed on the machine case; the clamping mechanism comprises a mounting frame, a main shaft, an inner support fixture, a fixture tightening and loosening control device and a first rotation driving device; the mounting frame is fixed on the machine case; the main shaft is horizontally arranged and rotatably connected to the mounting frame; a through hole is provided in the center of the main shaft; the inner support fixture is fixed to the right end of the main shaft; the fixture tightening and loosening control device is installed between the main shaft and the inner support fixture and is used for loosening or tightening the inner support fixture; the first rotation driving device is pressed on the mounting frame and the power output end is connected to the main shaft; the sand belt grinding mechanism is arranged on the right side of the clamping mechanism and comprises an X-axis driving module, a Z-axis driving module, a feeding driving module and a sand belt grinding assembly; the X-axis driving module is installed on the machine case and the power output end is connected to the Z-axis driving module; the feeding driving module is installed obliquely from the upper right to the lower left on the power output end of the Z-axis driving module; the sand belt grinding assembly comprises a mounting plate, a driving wheel, a second rotation driving device, a guide wheel group, a floating assembly and a sand belt; the mounting plate is installed on the power output end of the feeding driving module; the driving wheel is installed on the right part of the mounting plate; the second rotation driving device is installed on the mounting plate and the power output end is connected to the driving wheel; the guide wheel group is installed at the middle position of the mounting plate; the floating assembly is installed at the left end of the mounting plate; the floating assembly comprises a swinging floating seat and a lifting floating seat; the right part of the swinging floating seat is swingably installed on the mounting plate through a first flexible component; the lifting floating seat is slidably installed on the left part of the swinging floating seat through a second flexible component; a V-shaped guide groove is provided at the right end of the lifting floating seat; the sand belt is wound between the driving wheel, the guide wheel group and the V-shaped guide groove.

[0006] For further description of the present utility model, the fixture tightening and loosening control device includes an elastic pull rod assembly and an ejecting cylinder; the elastic pull rod assembly includes a connecting rod, a pull rod, a spring limiting seat and a first spring; the connecting rod is located in the through hole and the left end extends out of the through hole; the pull rod is fixed to the right end of the connecting rod and passes through the inner supporting fixture; a conical head is provided at the right end of the pull rod; the spring limiting seat is fixed to the left end of the connecting rod; the first spring is sleeved on the connecting rod and its two ends respectively abut against the spring limiting seat and the main shaft; the ejecting cylinder is installed on the mounting frame and is located on the left side of the connecting rod for abutting against the connecting rod to move rightward.

[0007] For further description of the present utility model, the middle part of the swinging floating seat is connected to the mounting plate through a rotating shaft, an arc-shaped guiding hole is provided at the right part, and a swinging convex block is connected to the right end; the first flexible assembly includes an upper support, an upper limiting screw, a lower support and a second spring; the upper support and the lower support are fixed on the mounting plate and are located on the upper and lower sides of the swinging convex block; the upper limiting screw is threadedly connected to the upper support; the lower end of the upper limiting screw is used for limiting the swinging convex block; a first spring mounting groove is provided above the lower support; the second spring is installed in the first spring mounting groove and its upper end abuts against the lower part of the swinging convex block; a guiding screw is provided on the arc-shaped guiding hole; the guiding screw passes through the arc-shaped guiding hole and is fixed to the mounting plate; a lifting convex block is provided at the rear side of the lifting floating seat; a plurality of second spring mounting grooves and guiding holes are provided on the lifting convex block; a guide sleeve is fixed in the guiding hole; the second flexible assembly includes a gantry seat, a third spring and a guide post; the gantry seat is fixed to the swinging floating seat; the gantry seat is fixed on the swinging floating seat and straddles above the lifting convex block; the number of the third springs is the same as the number of the second spring mounting grooves; the third spring is installed in the second spring mounting groove and its upper end abuts against the gantry seat; the guide post is fixed on the gantry seat and is slidably connected with the guide sleeve.

[0008] For further description of the present utility model, it further includes a trimming mechanism; the trimming mechanism is installed on the chassis and is located at the right front of the inner supporting fixture; the trimming mechanism includes an XY-axis adjustment platform and a trimming tool installed above the XY-axis adjustment platform.

[0009] The beneficial effects of the present utility model are as follows:

[0010] In this design, the clamping mechanism clamps and fixes the watch case and drives the watch case to rotate. At the same time, the sanding belt grinding mechanism controls the position of the sanding belt through the cooperation of the X-axis drive module, the Z-axis drive module and the feed drive module. The second rotation drive device controls the operation of the sanding belt to grind the inner shadow of the watch case. During the grinding process, the swinging floating seat and the first flexible assembly cooperate to provide a swinging flexible force for grinding, and the lifting floating seat and the second flexible assembly cooperate to provide a lifting flexible force for grinding, avoiding damage to the product. Description of the Drawings

[0011] Figure 1 It is the overall structure diagram of the present utility model;

[0012] Figure 2 It is the structure diagram of the floating component of the present utility model;

[0013] Figure 3 It is the structure diagram of the fixture tightening and loosening control device of the present utility model. Specific embodiments

[0014] The present utility model will be further described below in conjunction with the accompanying drawings:

[0015] Such as Figures 1-3As shown in the figure, a sand belt 346 grinding machine for the inner shadow of a watch case includes a chassis 1, a clamping mechanism 2 and a sand belt 346 grinding mechanism 3 installed on the chassis 1; the clamping mechanism 2 includes a mounting frame 21, a main shaft 22, an inner support fixture 23, a fixture tightening and loosening control device 24 and a first rotation driving device 25; the mounting frame 21 is fixed on the chassis 1; the main shaft 22 is horizontally arranged and rotatably connected to the mounting frame 21; a through hole is provided in the center of the main shaft 22; the inner support fixture 23 is fixed to the right end of the main shaft 22; the fixture tightening and loosening control device 24 is installed between the main shaft 22 and the inner support fixture 23 for loosening or tightening the inner support fixture 23; the first rotation driving device 25 is pressed on the mounting frame 21 and the power output end is connected to the main shaft 22; the sand belt 346 grinding mechanism 3 is arranged on the right side of the clamping mechanism 2 and includes an X-axis driving module 31, a Z-axis driving module 32, a feed driving module 33 and a sand belt grinding assembly 34; the X-axis driving module 31 is installed on the chassis 1 and the power output end is connected to the Z-axis driving module 32; the feed driving module 33 is inclined and installed from the upper right to the lower left at the power output end of the Z-axis driving module 32; the sand belt grinding assembly 34 includes a mounting plate 341, a driving wheel 342, a second rotation driving device 343, a guide wheel set 344, a floating assembly 345 and a sand belt 346; the mounting plate 341 is installed at the power output end of the feed driving module 33; the driving wheel 342 is installed at the right part of the mounting plate 341; the second rotation driving device 343 is installed on the mounting plate 341 and the power output end is connected to the driving wheel 342; the guide wheel set 344 is installed at the middle position of the mounting plate 341; the floating assembly 345 is installed at the left end of the mounting plate 341; the floating assembly 345 includes a swinging floating seat 3451 and a lifting floating seat 3452; the right part of the swinging floating seat 3451 is swingably installed on the mounting plate 341 through a first flexible component 3453; the lifting floating seat 3452 is slidably installed on the left part of the swinging floating seat 3451 through a second flexible component 3454; a V-shaped guide groove 3452-1 is provided at the right end of the lifting floating seat 3452; the sand belt 346 is wound between the driving wheel 342, the guide wheel set 344 and the V-shaped guide groove 3452-1; the watch case is installed outside the inner support fixture 23, and the inner support fixture 23 is tightened and fixed to the watch case by the tightening and loosening control device. During grinding, the main shaft 22 is rotated by the first rotation driving device 25 to drive the watch case to rotate; in the sand belt 346 grinding mechanism 3, the X-axis driving module 31, the Z-axis driving module 32 and the feed driving module 33 cooperate to control the position of the sand belt 346, and the second rotation driving device 343 controls the operation of the sand belt 346 to grind the inner shadow of the watch case. During the grinding process, the swinging floating seat 3451 and the first flexible component 3453 cooperate to provide a swinging flexible force for grinding, and the lifting floating seat 3452 and the second flexible component 3454 cooperate to provide a lifting flexible force for grinding to avoid damaging the product.

[0016] The fixture tightening and loosening control device 24 includes an elastic pull rod 2412 assembly 241 and an ejecting cylinder 242; the elastic pull rod 2412 assembly 241 includes a connecting rod 2411, a pull rod 2412, a spring limit seat 2413 and a first spring 2414; the connecting rod 2411 is located in the through hole and the left end extends out of the through hole; the pull rod 2412 is fixed to the right end of the connecting rod 2411 and passes through the inner support fixture 23; a conical head is provided at the right end of the pull rod 2412; the spring limit seat 2413 is fixed to the left end of the connecting rod 2411; the first spring 2414 is sleeved on the connecting rod 2411 and its two ends respectively abut against the spring limit seat 2413 and the main shaft 22; the ejecting cylinder 242 is installed on the mounting frame 21 and is located on the left side of the connecting rod 2411, and is used to push the connecting rod 2411 to move rightward. In the free state, the first spring 2414 provides pressure, so that the pull rod 2412 moves leftward, and the pull rod 2412 expands the inner support fixture 23 through the conical head to realize the clamping and fixing of the product. When the product needs to be loosened, the ejecting cylinder 242 can be used to push the connecting rod 2411 to move rightward.

[0017] The middle part of the swinging floating seat 3451 is connected to the mounting plate 341 through a rotating shaft 3451-2. An arc-shaped guiding hole 3451-3 is provided at the right part, and a swinging convex block 3451-4 is connected to the right end. The first flexible component 3453 includes an upper support 3453-1, an upper limit screw 3453-2, a lower support 3453-3, and a second spring 3453-4. The upper support 3453-1 and the lower support 3453-3 are fixed on the mounting plate 341 and are located on the upper and lower sides of the swinging convex block 3451-4. The upper limit screw 3453-2 is threadedly connected to the upper support 3453-1. The lower end of the upper limit screw 3453-2 is used to limit the swinging convex block 3451-4. A first spring 2414 installation groove is provided above the lower support 3453-3. The second spring 3453-4 is installed in the first spring 2414 installation groove and its upper end abuts against the lower part of the swinging convex block 3451-4. A guiding screw 3451-5 is provided on the arc-shaped guiding hole 3451-3. The guiding screw 3451-5 passes through the arc-shaped guiding hole 3451-3 and is fixed on the mounting plate 341. A lifting convex block 3452-2 is provided at the rear side of the lifting floating seat 3452. A plurality of second spring installation grooves and guiding holes are provided on the lifting convex block 3452-2. A guiding sleeve is fixed in the guiding hole. The second flexible component 3454 includes a gantry seat 3454-1, a third spring 3454-2, and a guiding column 3454-3. The gantry seat 3454-1 is fixed on the swinging floating seat 3451. The gantry seat 3454-1 is fixed on the swinging floating seat 3451 and straddles above the lifting convex block 3452-2. The number of the third springs 3454-2 is the same as the number of the second spring installation grooves. The third spring 3454-2 is installed in the second spring installation groove and its upper end abuts against the gantry seat 3454-1. The guiding column 3454-3 is fixed on the gantry seat 3454-1 and is slidably connected to the guiding sleeve. In this design, both the second spring installation grooves and the third springs 3454-2 are provided with three and are arranged in a left-right distribution. Two guiding columns 3454-3 are provided and are spaced apart between the second springs 3453-4. This design has high stability.

[0018] It further includes a trimming mechanism 4. The trimming mechanism 4 is installed on the chassis 1 and is located at the right front of the inner support fixture 23. The trimming mechanism 4 includes an XY-axis adjustment platform 41 and a trimming tool 42 installed above the XY-axis adjustment platform 41. The position of the trimming tool 42 is controlled by adjusting the XY-axis adjustment platform 41. The outer wall of the inner support fixture 23 is trimmed by the trimming tool 42. During the trimming process, the first rotation driving device 25 needs to control the rotation of the main shaft 22. This setting is to improve the installation accuracy of the product.

[0019] The above does not impose any limitation on the technical scope of the present invention. Any modification, equivalent change, and modification made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A watch case inner shadow belt grinder, characterized in that: It comprises a chassis and a clamping mechanism and a belt grinding mechanism installed on the chassis; the clamping mechanism comprises a mounting frame, a spindle, an inner support clamp, a clamp tension control device and a first rotation drive device; the mounting frame is fixed on the chassis; the spindle is arranged horizontally and rotatably connected to the mounting frame; a through hole is arranged at the center of the spindle; the inner support clamp is fixed to the right end of the spindle; the clamp tension control device is installed between the spindle and the inner support clamp, and is used to loosen or tighten the inner support clamp; the first rotation drive device is pressed on the mounting frame and the power output end is connected to the spindle; the belt grinding mechanism is arranged on the right side of the clamping mechanism, and comprises an X-axis drive module, a Z-axis drive module, a feed drive module and a belt grinding assembly; The X-axis drive module is installed on the chassis and the power output end is connected to the Z-axis drive module; The feed drive module is installed at the power output end of the Z-axis drive module at an angle from the upper right to the lower left; the belt grinding assembly includes a mounting plate, a driving wheel, a second rotation drive device, a guide wheel group, a floating assembly and a sanding belt; the mounting plate is installed at the power output end of the feed drive module; the driving wheel is installed on the right part of the mounting plate; the second rotation drive device is installed on the mounting plate and the power output end is connected to the driving wheel; the guide wheel group is installed at the middle position of the mounting plate; the floating assembly is installed at the left end of the mounting plate; the floating assembly includes a swinging floating seat and a lifting floating seat; the right part of the swinging floating seat can be mounted on the mounting plate so as to swing up and down through a first flexible assembly; the lifting floating seat can be slidably mounted on the left part of the swinging floating seat through a second flexible assembly; the right end of the lifting floating seat is provided with a V-shaped guide groove; the sanding belt is wound between the driving wheel, the guide wheel group and the V-shaped guide groove.

2. A watch case inner shadow belt grinder according to claim 1, characterized in that: The clamp tension control device includes an elastic pull rod assembly and an ejection cylinder; the elastic pull rod assembly includes a connecting rod, a pull rod, a spring limit seat and a first spring; the connecting rod is located in the through hole and the left end extends out of the through hole; the pull rod is fixed to the right end of the connecting rod and passes through the inner support clamp; the right end of the pull rod is provided with a cone head; the spring limit seat is fixed to the left end of the connecting rod; the first spring is sleeved on the connecting rod and the two ends respectively touch the spring limit seat and the main shaft; the ejection cylinder is installed on the mounting frame and is located on the left side of the connecting rod, and is used to touch the connecting rod to move to the right.

3. A watch case inner shadow belt grinder according to claim 1, characterized in that: The middle part of the swing floating seat is connected to the mounting plate through a rotating shaft, and an arc-shaped guide hole is provided on the right part, and a swing protrusion is connected to the right end; the first flexible component comprises an upper support, an upper limit screw, a lower support and a second spring; the upper support and the lower support are fixed on the mounting plate and are located on the upper and lower sides of the swing protrusion; the upper limit screw is threadedly connected to the upper support; the lower end of the upper limit screw is used to limit the swing protrusion; a first spring mounting groove is provided above the lower support; the second spring is installed in the first spring mounting groove and the upper end touches the bottom of the swing protrusion; a guide screw is provided on the arc-shaped guide hole; the guide screw passes through the arc-shaped guide hole and is fixed to the mounting plate; a lifting protrusion is provided on the rear side of the lifting floating seat; The lifting protrusion is provided with a plurality of second spring mounting grooves and guide holes; a guide sleeve is fixed in the guide hole; the second flexible component includes a gantry seat, a third spring and a guide column; the gantry seat is fixed on the swing floating seat; the gantry seat is fixed on the swing floating seat and straddles the lifting protrusion; the number of the third springs is the same as the number of the second spring mounting grooves; the third spring is installed in the second spring mounting groove and the upper end touches the gantry seat; the guide column is fixed on the gantry seat and is slidably connected with the guide sleeve.

4. A watch case inner shadow belt grinder according to claim 1, characterized in that: It also includes a trimming mechanism; the trimming mechanism is installed on the chassis and is located in the right front of the inner support fixture; the trimming mechanism includes an XY axis adjustment platform and a trimming knife installed above the XY axis adjustment platform.

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