Anti-deformation type motor shell sand blasting protection jig

Abstract

The invention relates to the field of motor shell sand blasting protection jigs, and discloses an anti-deformation type motor shell sand blasting protection jig which is characterized in that a main mounting seat is fixedly mounted in a sand blasting machining area in a sand blasting machine through bolts, and an auxiliary mounting seat is telescopically connected to the main mounting seat; the sand blasting protection jig further comprises a bearing frame fixed to the main installation base and the auxiliary installation base, an inner threaded column rotationally installed on the main installation base, and a threaded rod in threaded connection with the interior of the inner threaded column. A direction changing assembly for controlling the sand blasting direction of the motor shell is arranged on the bearing frame; a clamping assembly for clamping and limiting the inner wall of the motor shell is arranged on the turning frame; according to the sand blasting protection jig, the machining angle of the motor shell can be rotationally adjusted, the machining effect of the motor shell is improved, effective supporting on the inner wall of the motor shell is enhanced, and the situation that the motor shell deforms due to too large spraying pressure is avoided.

Description

Technical Field

[0001] The invention relates to the field of sandblasting protective jigs for motor housings, and in particular to a sandblasting protective jig for motor housings that prevents deformation. Background Art

[0002] Sandblasting is mainly used to improve the appearance and performance of motor housings. Sandblasting machines use compressed air to form a high-speed jet beam, which sprays abrasives onto the surface of the motor housing at high speed to remove paint, rust, scale and dirt on the surface of the motor housing, thereby improving the fatigue resistance and coating adhesion of the motor housing. During sandblasting, the motor housing is subjected to a large jet pressure. The motor housing is limited by a protective jig to maintain the stability of the sandblasting process. However, since the motor housing generally has a circular ring structure, the sandblasting jig is not convenient for stable clamping and limiting, and it is also not convenient to sandblast different areas of the motor housing during processing.

[0003] Chinese patent CN214603831U discloses a watch case sandblasting protection jig, including a jig body and an upper plate, the top of the jig body is fixedly connected to the upper plate, second slide grooves are provided on both sides of the upper plate, two baffles are provided between the second slide grooves on both sides, both sides of the two baffles are slidably connected to the upper plate through sliders and second slide grooves, the outer sides of the two sliders are fixedly connected to threaded rods, the upper plate is provided with a first slide groove inside and outside the threaded rod, the first slide groove and the threaded rod are slidably connected, nuts are threadedly connected to the outer sides of the two threaded rods and outside the upper plate, and second support blocks are symmetrically provided on both sides of the jig body. By arranging sliders, baffles, second slide grooves, screws, etc. for use in combination, the upper surface of the watch case can be freely protected, and sandblasting can be performed where sandblasting is required.

[0004] The above-mentioned patent uses an accordion cloth, a slide bar, a slot, an unlocking rod, etc. to cooperate with each other, so that the height of the jig body can be freely adjusted and the exposed periphery of the case can be sandblasted. However, the interior of the motor casing is a hollow structure. During the sandblasting process, some of the sprayed sand particles can easily enter the interior of the motor casing. If the sand particles in the motor casing are not discharged in time, they will penetrate between the casing and the protective jig, aggravating the wear of the inner wall of the motor casing and affecting the stability of the protective jig restricted in the motor casing. The motor casing is prone to movement and falling off on the protective jig during sandblasting. In addition, during high-pressure sandblasting, some motor casings with thinner walls are prone to deformation due to the influence of the sandblasting pressure, which reduces the processing quality of the motor casing. Summary of the invention

[0005] In view of the above problems, a sandblasting protective jig for a motor casing is provided. The motor casing can be controlled to rotate back and forth during the sandblasting process through a changing direction component to discharge the sand entering the motor casing, thereby solving the problem that the sand in the motor casing will penetrate into the space between the casing and the protective jig if it is not discharged in time, affecting the stability of the protective jig in the motor casing, causing the motor casing to move and fall off on the protective jig during sandblasting.

[0006] In order to solve the problems of the prior art, the present invention provides a motor housing sandblasting protection fixture of an anti-deformation form, a main mounting seat is fixedly installed in the sandblasting processing area inside the sandblasting machine by bolts, and a secondary mounting seat is telescopically connected to the main mounting seat, and the sandblasting protection fixture also includes a bearing frame fixed on the main mounting seat and the secondary mounting seat, an internal threaded column rotatably installed on the main mounting seat, and a threaded rod threaded in the internal threaded column, and the threaded rod is rotatably installed on the secondary mounting seat; the bearing frame is provided with a changing component for controlling the sandblasting direction of the motor housing, the changing component includes a rotating arm rotatably installed on the bearing frame, a rotating rod is fixed on the rotating arm, a changing frame is rotatably installed on the rotating rod, a hydraulic rod is rotatably connected to the bearing frame, and the output end of the hydraulic rod is rotatably connected to the rotating arm; the rotation directions of the rotating arms on the main mounting seat and the secondary mounting seat are opposite; a clamping component for clamping and limiting the inner wall of the motor housing is provided on the changing frame, and a transmission component for controlling the reciprocating rotation of the clamping component is provided in the changing frame.

[0007] Preferably, the clamping assembly includes a rotating frame rotatably mounted on the changing frame, two groups of rectangular frames are fixedly mounted on the rotating frame, two groups of shifting mechanisms are symmetrically slidably connected to the rectangular frame about the rotating axis of the rotating frame, and arc clamping seats for clamping and limiting the inner wall of the motor housing are installed on the shifting mechanisms; the two groups of rectangular frames are fixedly connected coaxially, the shifting mechanisms on the two groups of rectangular frames are vertically distributed, and the circumferential length of the multiple arc clamping seats outside the two groups of rectangular frames after unfolding is the same as the circumferential length of the inner wall of the motor housing.

[0008] Preferably, the shifting mechanism comprises a moving frame slidably connected to the rectangular frame, a mounting frame is fixedly connected to the moving frame by bolts, and an arc clamp seat is fixedly mounted on the mounting frame.

[0009] Preferably, the rotating frame and the rectangular frame are provided with a power assembly for controlling the synchronous movement of multiple shifting mechanisms.

[0010] Preferably, the power assembly includes a servo motor fixed on the rotating frame, the output end of the servo motor is connected to a power shaft, a power rod is eccentrically connected to the power shaft, a transmission rod is rotatably connected to the power rod, and the transmission rod is rotatably connected to the moving frame.

[0011] Preferably, the transmission assembly includes a power gear coaxially fixed on the rotating rod, a transmission gear is meshedly connected beside the power gear, the transmission gear is rotatably mounted on the changing frame, a driven gear is also rotatably mounted on the changing frame, a driven bevel gear is coaxially fixed on the driven gear, a driving bevel gear is meshedly connected beside the driven bevel gear, the driving bevel gear is rotatably mounted on the changing frame, and the driving bevel gear is fixedly connected to the rotating frame; the diameters of the power gear, the transmission gear and the driven gear decrease sequentially.

[0012] Preferably, the direction-changing frame is provided with a buffer component for buffering the reciprocating inertial force of the rotating frame to reduce wear.

[0013] Preferably, the buffer assembly includes a stand symmetrically fixed on the outer walls of both sides of the rotating frame, a plurality of hollow arc seats are fixedly installed on the stand, an arc buffer support rod is slidably connected in the hollow arc seat along the arc direction, an arc-shaped round rod is fixedly connected in the middle position of the arc buffer support rod; the arc-shaped round rod is slidably connected to the hollow arc seat, a buffer spring is sleeved on the outside of the arc-shaped round rod, and the buffer spring is connected between the hollow arc seat and the arc buffer support rod; the upper and lower ends of the arc buffer support rod are arc structures, and the arc buffer support rods are distributed on the outer side of the rotating frame, and the rotating frame reciprocates and contacts the arc surfaces at both ends of the arc buffer support rod.

[0014] Preferably, both the main mounting seat and the auxiliary mounting seat are provided with a supporting component for supporting and limiting the position of the rotating frame.

[0015] Preferably, the support assembly includes a lower support frame fixed on the main mounting seat and the auxiliary mounting seat, the lower support frame is connected to an upper support frame for lifting, and the upper support frame is arranged directly below the rotating frame; an electric lifting rod is connected between the lower support frame and the upper support frame, and the upper support frame is fixed at the output end of the electric lifting rod.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention can control the motor housing to tilt back and forth during the sandblasting process through the direction-changing component, clamp the clamping component on the inner wall of the motor housing, operate the hydraulic rod in the direction-changing component, and control the hydraulic rods on both sides of the motor housing to output in reverse. The pulling forces on both sides of the motor housing are in different directions, so that the motor housing is tilted and set between the left and right groups of carrier frames. During the processing, the motor housing is controlled to tilt back and forth in the left and right directions, so that the gravel entering the inner wall of the motor housing is discharged outward autonomously due to the action of gravity, so as to prevent sand from penetrating between the motor housing and the clamping component, and maintain the stability of the connection between the motor housing and the clamping component.

[0018] 2. The present invention uses a transmission component and a clamping component to make the motor housing reciprocate along its own circumferential direction during the processing process. The change-of-direction component causes the rotating arm and the change-of-direction frame to rotate relative to each other during operation. The power gear, transmission gear, driven gear, driven bevel gear and active bevel gear in the change-of-direction frame drive the rotating frame to reciprocate through meshing transmission. The rotating frame drives the motor housing to reciprocate synchronously through the clamping component, so that the motor housing reciprocates along its own circumferential direction while tilting back and forth left and right, thereby achieving correspondence between different areas outside the motor housing and the rotation of the nozzle in the sandblasting machine, thereby expanding the sandblasting processing area outside the motor housing.

[0019] 3. The present invention can effectively clamp and support on the inner wall of the motor housing through the clamping assembly. The operating power assembly controls the shifting mechanism to extend outward in the rectangular frame. The shifting mechanism pushes the circular arc clamp seat to clamp and support on the inner wall of the motor housing. Four groups of circular arc clamp seats are respectively provided on the sides of the main mounting seat and the auxiliary mounting seat. After the four groups of circular arc clamp seats are unfolded, the circumferential length of the support is the same as the circumferential length of the inner wall of the motor housing, thereby achieving effective support for a circle of the inner wall of the motor housing, so that when some motor housings with thin walls are sandblasted, the inner wall support strength is increased, thereby avoiding local deformation caused by excessive sandblasting pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The present invention is a schematic diagram of the three-dimensional structure of a support frame of a sandblasting protective fixture for an anti-deformation motor housing.

[0021] Figure 2 The present invention is a schematic diagram of the three-dimensional structure of the main mounting seat of a sandblasting protective fixture for an anti-deformation motor housing.

[0022] Figure 3 The present invention is a schematic diagram of the three-dimensional structure of an upper support frame of a sandblasting protective fixture for an anti-deformation motor housing.

[0023] Figure 4 The present invention is a schematic diagram of the three-dimensional structure of a rotating frame of a sandblasting protective fixture for an anti-deformation motor housing.

[0024] Figure 5 The present invention is a three-dimensional structural diagram of a clamping component of a sandblasting protective fixture for an anti-deformation motor housing.

[0025] Figure 6 The present invention is a schematic diagram of the three-dimensional structure of a hydraulic rod of a sandblasting protective fixture for an anti-deformation motor housing.

[0026] Figure 7 The present invention is a schematic diagram of the three-dimensional structure of a rotating arm of a motor housing sandblasting protection fixture for preventing deformation.

[0027] Figure 8 The present invention is a schematic diagram of the cross-sectional structure of a change-direction frame of a sandblasting protection fixture for a motor housing.

[0028] Fig. 9 The invention is a schematic diagram of the side view structure of an arc clamp seat of a sandblasting protective fixture for an anti-deformation motor housing.

[0029] Fig.10 The present invention is a schematic diagram of the three-dimensional structure of an arc buffer support rod of a sandblasting protection fixture for an anti-deformation motor housing.

[0030] Fig.11 The present invention is a three-dimensional structural diagram of a displacement mechanism of a sandblasting protective fixture for an anti-variable motor housing.

[0031] Fig.12 The present invention is a schematic diagram of the three-dimensional structure of the power shaft of a motor housing sandblasting protection fixture to prevent deformation.

[0032] The numbers in the figure are:

[0033] 1. Sandblasting machine; 21. Main mounting seat; 22. Auxiliary mounting seat; 23. Carrying frame; 24. Internal thread column; 25. Threaded rod; 3. Direction changing assembly; 31. Rotating arm; 32. Rotating rod; 33. Direction changing frame; 34. Hydraulic rod; 35. Transmission assembly; 351. Power gear; 352. Transmission gear; 353. Driven gear; 354. Driven bevel gear; 355. Active bevel gear; 36. Buffer assembly; 361. Stand; 362. Hollow arc Seat; 363, arc buffer support rod; 364, arc round rod; 365, buffer spring; 4, clamping assembly; 41, rotating frame; 42, rectangular frame; 43, shifting mechanism; 431, moving frame; 432, mounting frame; 44, arc clamp seat; 45, power assembly; 451, servo motor; 452, power shaft; 453, power rod; 454, transmission rod; 5, support assembly; 51, lower support frame; 52, upper support frame; 53, electric drive lifting rod. DETAILED DESCRIPTION

[0034] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0035] See also Figure 1-Figure 7As shown, a motor housing sandblasting protection fixture of an anti-deformation form is provided. A main mounting seat 21 is fixedly installed in the sandblasting processing area inside the sandblasting machine 1 by bolts, and a sub-mounting seat 22 is telescopically connected to the main mounting seat 21. The sandblasting protection fixture also includes a bearing frame 23 fixed to the main mounting seat 21 and the sub-mounting seat 22, an internal threaded column 24 rotatably installed on the main mounting seat 21, and a threaded rod 25 threadedly connected to the internal threaded column 24. The threaded rod 25 is rotatably installed on the sub-mounting seat 22; a direction-changing component 3 for controlling the sandblasting direction of the motor housing is provided on the bearing frame 23, and the direction-changing component 3 includes a rotating A rotating arm 31 is movably mounted on the carrier 23, a rotating rod 32 is fixed on the rotating arm 31, a changing frame 33 is rotatably mounted on the rotating rod 32, a hydraulic rod 34 is rotatably connected to the carrier 23, and an output end of the hydraulic rod 34 is rotatably connected to the rotating arm 31; the rotation directions of the rotating arm 31 on the main mounting seat 21 and the auxiliary mounting seat 22 are opposite; a clamping assembly 4 for clamping and limiting the inner wall of the motor housing is provided on the changing frame 33, and a transmission assembly 35 for controlling the reciprocating rotation of the clamping assembly 4 is provided in the changing frame 33, and the reciprocating rotation of the transmission assembly 35 can expand the sandblasting range of the motor housing.

[0036] The main mounting seat 21 is fixedly mounted on the sand leakage bottom plate in the sand blasting area of ​​the sand blasting machine 1. The bottom of the auxiliary mounting seat 22 is provided with a roller that fits on the sand leakage bottom plate of the sand blasting machine 1 and rolls. The motor housing is set between the left and right groups of carrier frames 23, and the motor housing is first sleeved on the outside of the clamping assembly 4 next to the main mounting seat 21. According to the length of the motor housing, the clamping assembly 4 next to the auxiliary mounting seat 22 is adjusted to move toward the inside of the motor housing, and the threaded rod 25 is controlled to rotate. Under the transmission action of the threaded rod 25 and the internal threaded column 24, the auxiliary mounting seat 22 moves toward the main mounting seat 21. The auxiliary mounting seat 22 drives the side changing assembly 3 and the clamping assembly 4 to move synchronously, so that the clamping assembly 4 moves to the inside of the motor housing, and the left and right groups of clamping assemblies 4 effectively clamp the inner walls on both sides of the motor housing to limit the position of the motor housing.

[0037] During sandblasting, the nozzle in the sandblasting machine 1 sprays sand onto the surface of the motor housing under high pressure to process the surface of the motor housing. The left and right groups of direction-changing components 3 cause the motor housing to perform left and right reciprocating tilting motion, so that the motor housing is in a tilted state during the sandblasting process, so that the sand entering the motor housing is discharged outward under the action of gravity, avoiding the sand from penetrating between the motor housing and the clamping component 4, keeping the clamping component 4 stably clamped and supported on the inner wall of the motor housing, and at the same time, the clamping component 4 is supported on both sides of the inner wall of the motor housing, increasing the support strength of the inner wall of the motor housing, avoiding local deformation of the motor housing when subjected to sandblasting pressure, and improving the protection of the motor housing during sandblasting.

[0038] The hydraulic rod 34 is operated to push the rotating arm 31 to rotate, and the hydraulic rods 34 on the main mounting seat 21 and the auxiliary mounting seat 22 are controlled to output in the opposite direction, so that the rotating arms 31 on the left and right sides rotate in the opposite direction, and the transmission assembly 35, the clamping assembly 4 and the motor housing clamped outside the clamping assembly 4 arranged between the two groups of rotating arms 31 are tilted and rotated, and the output direction and output displacement of the hydraulic rod 34 above the main mounting seat 21 and the auxiliary mounting seat 22 are continuously alternated, so that the motor housing is tilted and rotated back and forth in the left and right directions, so that the sand in the motor housing can be quickly discharged outward during the sandblasting process, and the rotating motor housing can effectively contact with the sprayed sand, thereby improving the surface treatment effect of the motor housing.

[0039] See also Figure 2-Figure 6 , Fig. 9 , Fig.11 and Fig.12 As shown, the clamping assembly 4 includes a rotating frame 41 rotatably mounted on the changing frame 33, two groups of rectangular frames 42 are fixedly mounted on the rotating frame 41, two groups of shifting mechanisms 43 are symmetrically slidably connected to the rectangular frame 42 about the rotating axis of the rotating frame 41, and arc clamping seats 44 for clamping and limiting the inner wall of the motor housing are installed on the shifting mechanisms 43; the two groups of rectangular frames 42 are fixedly connected coaxially, the shifting mechanisms 43 on the two groups of rectangular frames 42 are vertically distributed, and the circumferential length of the multiple arc clamping seats 44 outside the two groups of rectangular frames 42 after unfolding is the same as the circumferential length of the inner wall of the motor housing.

[0040] Control multiple shifting mechanisms 43 to move outward synchronously on the rotating frame 41, and the shifting mechanisms 43 drive the arc clamping seats 44 to move outward synchronously, so that the arc clamping seats 44 are clamped and supported on the inner wall of the motor housing. Four groups of arc clamping seats 44 are respectively arranged next to the main mounting seat 21 and the auxiliary mounting seat 22. The four groups of arc clamping seats 44 are distributed circumferentially inside the motor housing, and after the four groups of arc clamping seats 44 are unfolded and supported inside the motor housing, the circumferential length of the support is the same as the circumferential length of the inner wall of the motor housing, thereby achieving effective support for a circle of the inner wall of the motor housing. The inner walls on both sides of the motor housing are supported by the arc clamping seats 44, thereby improving the supporting strength of the inner wall of the motor housing and avoiding local deformation of some motor housings with thinner walls when subjected to sandblasting pressure.

[0041] See also Figure 2-Figure 6 , Fig. 9 , Fig.11 and Fig.12 As shown, the shift mechanism 43 includes a moving frame 431 slidably connected to the rectangular frame 42 , a mounting frame 432 is fixedly connected to the moving frame 431 by bolts, and an arc clamp seat 44 is fixedly mounted on the mounting frame 432 .

[0042] There are many sizes of motor housings. According to the changes in the diameter of the motor housing, the arc clamp seat 44 corresponding to the inner wall size of the motor housing within a specific diameter range can be replaced. The arc clamp seat 44 is connected to the movable frame 431 through the bolts on the mounting frame 432. The arc clamp seat 44 can be easily disassembled and assembled, ensuring that the arc clamp seat 44 can fit completely and tightly on the inner wall of the motor housing after being moved and unfolded, thereby improving the processing application range of the sandblasting protective fixture.

[0043] See also Fig.11 and Fig.12 As shown, a power assembly 45 for controlling the synchronous movement of a plurality of shifting mechanisms 43 is disposed in the rotating frame 41 and the rectangular frame 42 .

[0044] The power assembly 45 can simultaneously control multiple shifting mechanisms 43 in the rectangular frame 42 to move with the same displacement, maintaining the consistency of movement of the arc clamp seat 44 outside the rectangular frame 42, so that the arc clamp seat 44 can be synchronously unfolded and supported on the inner wall of the motor housing.

[0045] See also Fig.11 and Fig.12 As shown, the power assembly 45 includes a servo motor 451 fixed on the rotating frame 41, the output end of the servo motor 451 is connected to a power shaft 452, a power rod 453 is eccentrically connected to the power shaft 452, a transmission rod 454 is rotatably connected to the power rod 453, and the transmission rod 454 is rotatably connected to the moving frame 431.

[0046] The servo motor 451 is operated to control the rotation of the power shaft 452, and the power shaft 452 controls the circular rotation of the power rod 453, so that the two ends of the transmission rod 454 connected between the power rod 453 and the moving frame 431 rotate accordingly, and the rotating transmission rod 454 pushes the moving frame 431 connected in the rectangular frame 42 to move, thereby realizing the synchronous movement and deployment of multiple moving frames 431 in the rectangular frame 42.

[0047] See also Figure 5-Figure 8 As shown, the transmission assembly 35 includes a power gear 351 coaxially fixed on the rotating rod 32, a transmission gear 352 is meshedly connected beside the power gear 351, the transmission gear 352 is rotatably mounted on the changing frame 33, and a driven gear 353 is also rotatably mounted on the changing frame 33, a driven bevel gear 354 is coaxially fixed on the driven gear 353, a driving bevel gear 355 is meshedly connected beside the driven bevel gear 354, the driving bevel gear 355 is rotatably mounted on the changing frame 33, and the driving bevel gear 355 is fixedly connected to the rotating frame 41; the diameters of the power gear 351, the transmission gear 352 and the driven gear 353 decrease in sequence.

[0048] When the rotating arm 31 and the changing frame 33 rotate, the changing frame 33 is sleeved and connected to the rotating rod 32 and rotates in a circle. The transmission gear 352 on the changing frame 33 meshes and rotates along the circumferential direction of the power gear 351. The diameter of the transmission gear 352 is smaller than the diameter of the power gear 351, so that the transmission gear 352 accelerates to rotate. When the transmission gear 352 rotates, the driven gear 353 on the side is accelerated to rotate through meshing transmission. The driven gear 353 drives the coaxially connected driven bevel gear 354 to rotate synchronously. The driven bevel gear 354 controls the main gear 351 through meshing transmission. The movable bevel gear 355 rotates, the active bevel gear 355 is fixedly connected to the rotating frame 41, and the control rotating frame 41 is connected to the side of the change frame 33 for reciprocating rotation. Under the control of the transmission component 35, when the rotating arm 31 reciprocates to control the clamped motor housing to tilt and rotate in the left and right directions, the rotating frame 41 accelerates the reciprocating rotation along the axis direction of the motor housing. The rotating frame 41 drives the motor housing to reciprocate along its own axis through the clamping component 4, thereby expanding the contact range between the motor housing and the sand particles sprayed by the nozzle of the sandblasting machine 1, and improving the uniformity of the surface treatment of the motor housing.

[0049] See also Figure 6 , Figure 8-Figure 10 As shown, a buffer assembly 36 is provided on the direction-changing frame 33 for buffering the reciprocating inertial force of the rotating frame 41 to reduce wear.

[0050] When the rotating frame 41 is driven by the transmission assembly 35 to reciprocate, the rotating frame 41 reciprocates once and contacts the buffer assemblies 36 on both sides of the change frame 33 respectively. Under the buffering action of the buffer assemblies 36, the inertia force of the rotating frame 41 during the high-speed reciprocating rotation is reduced, thereby reducing the wear of the rotating frame 41 during high-speed rotation.

[0051] See also Figure 8-Figure 10 As shown, the buffer assembly 36 includes a stand 361 symmetrically fixed on the outer walls of both sides of the rotating frame 41, and a plurality of hollow arc seats 362 are fixedly installed on the stand 361. An arc buffer support rod 363 is slidably connected in the hollow arc seat 362 along the arc direction, and an arc-shaped round rod 364 is fixedly connected in the middle position of the arc buffer support rod 363; the arc-shaped round rod 364 is slidably connected to the hollow arc seat 362, and a buffer spring 365 is sleeved on the outside of the arc-shaped round rod 364, and the buffer spring 365 is connected between the hollow arc seat 362 and the arc buffer support rod 363; the upper and lower ends of the arc buffer support rod 363 are arc structures, and the arc buffer support rod 363 is distributed on the outer side of the rotating frame 41, and the rotating frame 41 reciprocates and contacts the arc surfaces at both ends of the arc buffer support rod 363.

[0052] When the rotating frame 41 is connected to the side of the changing frame 33 and reciprocates, the rotating frame 41 reciprocates once, and the two sides respectively contact the arc surfaces of the arc buffer support rod 363 arranged next to the changing frame 33, and the rotating frame 41 pushes the arc buffer support rod 363 to move along the arc direction of the hollow arc seat 362. The two sides of the hollow arc seat 362 are groove structures provided for the sliding of the arc buffer support rod 363. The middle position of the hollow arc seat 362 is slidably connected with the arc rod 364. When the arc buffer support rod 363 moves, it drives the arc rod 364 to move synchronously. The buffer spring 365 outside the arc rod 364 is compressed. Under the action of the spring compression, the inertia force of the reciprocating rotation of the rotating frame 41 can be effectively buffered to maintain the rotation stability of the rotating frame 41.

[0053] See also Figure 2 and Figure 3 As shown, both the main mounting seat 21 and the auxiliary mounting seat 22 are provided with a supporting assembly 5 for supporting and limiting the position of the rotating frame 41 .

[0054] When the sandblasting protection jig is not in use, the bottom of the clamping assembly 4 on both sides is supported by the support assembly 5 to prevent the clamping assembly 4 from moving downward under the action of gravity, so that the sandblasting protection jig is in a horizontal state when not in use, so that the motor housing can be placed outside the clamping assembly 4.

[0055] See also Figure 2 and Figure 3 As shown, the support assembly 5 includes a lower support frame 51 fixed on the main mounting seat 21 and the auxiliary mounting seat 22, and an upper support frame 52 is connected to the lower support frame 51 for lifting, and the upper support frame 52 is arranged directly below the rotating frame 41; an electric-driven lifting rod 53 is connected between the lower support frame 51 and the upper support frame 52, and the upper support frame 52 is fixed at the output end position of the electric-driven lifting rod 53.

[0056] After the motor casing is sleeved on the outside of the clamping assembly 4, the auxiliary mounting seat 22 is controlled to move close to the main mounting seat 21, so that the clamping assembly 4 on the auxiliary mounting seat 22 moves into the inside of the motor casing, and the inner wall of the motor casing is clamped and limited by the left and right groups of clamping assemblies 4. The electric drive lifting rod 53 is operated to control the upper support frame 52 to move downward, so that the upper support frame 52 moves away from the rotating frame 41. At this time, the rotating frames 41 on the left and right sides are affected by the gravity of the motor casing clamped in the middle, and the rotating frames 41 can maintain a horizontal state. When the rotating arm rods 31 on the left and right sides are rotated and adjusted, the rotating frame 41 follows the turning frame 33 to rotate and tilt. At the same time, the rotating frame 41 is connected to the side of the turning frame 33 under the transmission action of the transmission assembly 35 to rotate, thereby driving the clamped motor casing to rotate, tilt and rotate.

[0057] Working principle: The protective jig is installed in the sandblasting area of ​​the sandblasting machine 1. When not processing, the support assembly 5 is supported under the rotating frame 41. The motor housing is first mounted on the outside of the clamping assembly 4 on the side of the main mounting seat 21. The position of the auxiliary mounting seat 22 is adjusted according to the length of the motor housing, and the threaded rod 25 is controlled to rotate. Under the threaded transmission action of the threaded rod 25 and the internal threaded column 24, the auxiliary mounting seat 22 moves toward the main mounting seat 21, so that the clamping assembly 4 next to the auxiliary mounting seat 22 moves into the inside of the motor housing. After the inner wall of the motor housing is clamped and limited by the clamping assemblies 4 on the left and right sides, the electric drive lifting rod 53 is operated to control the upper support frame 52 to move downward and away from the rotating frame 41.

[0058] The servo motor 451 is operated to control the rotation of the power shaft 452, and the power shaft 452 drives the external fixed power rod 453 to rotate in a circle. The two ends of the transmission rod 454 connected between the power rod 453 and the movable frame 431 rotate accordingly. The rotating transmission rod 454 pushes the movable frame 431 to move in the rectangular frame 42, and the movable frame 431 pushes the arc clamp seat 44 to move outward and unfold, so that the arc clamp seat 44 is clamped and supported inside the motor housing. Four groups of arc clamp seats 44 are arranged beside the main mounting seat 21 and the auxiliary mounting seat 22. After the four groups of arc clamp seats 44 are unfolded, they just support a circle of the inner wall of the motor housing. The clamping assembly 4 can not only limit the sandblasting position of the motor housing, but also improve the supporting strength of the inner wall of the motor housing, thereby avoiding the situation where the motor housing is locally deformed by the injection pressure during the sandblasting process.

[0059] The hydraulic rod 34 is operated to control the rotation of the rotating arm 31, and the rotating arm 31 on the main mounting seat 21 and the auxiliary mounting seat 22 rotate in opposite directions, so that the clamping assembly 4 between the left and right groups of carrier frames 23 and the clamped motor housing are in a tilted state. By adjusting the output direction and output displacement of the hydraulic rod 34, the tilt direction and tilt angle of the motor housing can be adjusted, and the motor housing can be kept in a state of reciprocating left and right tilting rotation during the sandblasting process. Some of the sand particles sprayed into the inner wall of the motor housing are discharged to the outside of the motor housing under the action of gravity. At the same time, the motor housing in the tilted state can fully contact with the sprayed sand particles, thereby improving the external processing effect of the motor housing.

[0060] When the rotating arm 31 and the changing frame 33 rotate, the power gear 351, the transmission gear 352, the driven gear 353, the driven bevel gear 354 and the driving bevel gear 355 in the changing frame 33 drive the rotating frame 41 to rotate under the meshing transmission action, and the rotating frame 41 drives the clamped motor housing to rotate along its own axis direction, so that the motor housing can rotate back and forth while rotating to expand the range of sandblasting processing, thereby further improving the surface processing effect of the motor housing.

[0061] When the rotating frame 41 reciprocates, the rotating frame 41 rotates and contacts the end faces of the arc buffer support rods 363 on both sides, pushing the arc buffer support rods 363 to move along the circumferential direction of the hollow arc seat 362, and the arc buffer support rods 363 move to compress the buffer springs 365. Under the buffering effect of the springs, the influence of the inertial force on the rotating frame 41 during high-speed reciprocating rotation is reduced, thereby maintaining the stability of the reciprocating rotation of the rotating frame 41.

[0062] The above embodiments only express one or several implementation modes of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for those of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. A sandblasting protection fixture for preventing the motor housing from being deformed, wherein a main mounting seat (21) is fixedly installed in a sandblasting processing area inside a sandblasting machine (1) by bolts, and a secondary mounting seat (22) is telescopically connected to the main mounting seat (21), characterized in that: The sandblasting protection fixture also includes a bearing frame (23) fixed on the main mounting seat (21) and the auxiliary mounting seat (22), an internal thread column (24) rotatably mounted on the main mounting seat (21), and a threaded rod (25) threadedly connected to the internal thread column (24), wherein the threaded rod (25) is rotatably mounted on the auxiliary mounting seat (22); The carrier (23) is provided with a direction-changing assembly (3) for controlling the sandblasting direction of the motor housing, the direction-changing assembly (3) comprising a rotating arm (31) rotatably mounted on the carrier (23), a rotating rod (32) being fixed on the rotating arm (31), a direction-changing frame (33) being rotatably mounted on the rotating rod (32), a hydraulic rod (34) being rotatably connected to the carrier (23), and an output end of the hydraulic rod (34) being rotatably connected to the rotating arm (31); The rotation directions of the rotating arms (31) on the main mounting seat (21) and the auxiliary mounting seat (22) are opposite; A clamping assembly (4) for clamping and limiting the inner wall of the motor housing is provided on the direction-changing frame (33), and a transmission assembly (35) for controlling the reciprocating rotation of the clamping assembly (4) is provided in the direction-changing frame (33).

2. The anti-deformation motor housing sandblasting protective fixture according to claim 1 is characterized by: The clamping assembly (4) comprises a rotating frame (41) rotatably mounted on the direction-changing frame (33), two groups of rectangular frames (42) being fixedly mounted on the rotating frame (41), two groups of shifting mechanisms (43) being symmetrically slidably connected to the rectangular frame (42) about the rotating axis of the rotating frame (41), and an arc clamping seat (44) for clamping and limiting the inner wall of the motor housing is mounted on the shifting mechanism (43); The two groups of rectangular frames (42) are fixedly connected coaxially, the shifting mechanisms (43) on the two groups of rectangular frames (42) are vertically distributed, and the circumferential length of the plurality of arc clamping seats (44) outside the two groups of rectangular frames (42) after being unfolded is the same as the circumferential length of the inner wall of the motor housing.

3. The anti-deformation motor housing sandblasting protective fixture according to claim 2 is characterized by: The shifting mechanism (43) comprises a moving frame (431) slidably connected to the rectangular frame (42); a mounting frame (432) is fixedly connected to the moving frame (431) via bolts; and an arc clamping seat (44) is fixedly mounted on the mounting frame (432).

4. The anti-deformation motor housing sandblasting protective fixture according to claim 3 is characterized by: The rotating frame (41) and the rectangular frame (42) are provided with a power assembly (45) for controlling the synchronous movement of a plurality of shifting mechanisms (43).

5. The anti-deformation motor housing sandblasting protective fixture according to claim 4 is characterized by: The power assembly (45) comprises a servo motor (451) fixed on the rotating frame (41); the output end of the servo motor (451) is connected to a power shaft (452); a power rod (453) is eccentrically connected to the power shaft (452); a transmission rod (454) is rotatably connected to the power rod (453); and the transmission rod (454) is rotatably connected to the moving frame (431).

6. The anti-deformation motor housing sandblasting protection fixture according to claim 1 is characterized by: The transmission assembly (35) comprises a power gear (351) coaxially fixed on the rotating rod (32), a transmission gear (352) meshingly connected beside the power gear (351), the transmission gear (352) being rotatably mounted on the direction-changing frame (33), a driven gear (353) being rotatably mounted on the direction-changing frame (33), a driven bevel gear (354) being coaxially fixed on the driven gear (353), a driving bevel gear (355) being meshingly connected beside the driven bevel gear (354), the driving bevel gear (355) being rotatably mounted on the direction-changing frame (33), and the driving bevel gear (355) being fixedly connected to the rotating frame (41); The diameters of the power gear (351), the transmission gear (352) and the driven gear (353) decrease in sequence.

7. The anti-deformation motor housing sandblasting protection fixture according to claim 6 is characterized by: The direction-changing frame (33) is provided with a buffer component (36) for buffering the reciprocating inertial force of the rotating frame (41) to reduce wear.

8. The anti-deformation motor housing sandblasting protective fixture according to claim 7 is characterized by: The buffer assembly (36) comprises a stand (361) symmetrically fixed to the outer walls of both sides of the rotating frame (41); a plurality of hollow arc seats (362) are fixedly mounted on the stand (361); an arc buffer support rod (363) is slidably connected in the hollow arc seat (362) along the arc direction; and an arc-shaped round rod (364) is fixedly connected in the middle of the arc buffer support rod (363); The arc-shaped round rod (364) is slidably connected to the hollow arc seat (362), and a buffer spring (365) is sleeved on the outside of the arc-shaped round rod (364), and the buffer spring (365) is connected between the hollow arc seat (362) and the arc buffer support rod (363); The upper and lower ends of the arc buffer support rod (363) are arc-shaped structures, and the arc buffer support rod (363) is distributed on the outer side surface of the rotating frame (41). The rotating frame (41) reciprocates to contact the arc surfaces at both ends of the arc buffer support rod (363).

9. The anti-deformation motor housing sandblasting protective fixture according to claim 2, characterized in that: The main mounting seat (21) and the auxiliary mounting seat (22) are both provided with a supporting assembly (5) for supporting and limiting the position of the rotating frame (41).

10. The anti-deformation motor housing sandblasting protective fixture according to claim 9, characterized in that: The support assembly (5) comprises a lower support frame (51) fixed on a main mounting seat (21) and a secondary mounting seat (22); an upper support frame (52) is connected to the lower support frame (51) in a lifting manner; and the upper support frame (52) is arranged at a position directly below the rotating frame (41); An electric-driven lifting rod (53) is connected between the lower support frame (51) and the upper support frame (52), and the upper support frame (52) is fixed at the output end position of the electric-driven lifting rod (53).

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