Die grinding equipment with automatic adjusting function

Abstract

The invention relates to the related technical field of molds, in particular to mold grinding equipment with an automatic adjusting function. The technical problems that an existing mold grinding device is limited in mold adjusting range, accordingly, mold adjusting is not flexible enough, dead angles easily exist, the mold is difficult to adapt to molds of various needed shapes, the angle of the mold needs to be continuously adjusted during grinding, the stability of the mold is difficult to maintain through simple clamping, and the grinding effect is affected are solved. The invention discloses mold polishing equipment with an automatic adjusting function. The mold polishing equipment comprises a base; the mounting frame is fixedly connected to the base; and the first adjusting mechanism is arranged between the base and the mounting frame. A push-pull rod drives a limiting disc to rotate, so that an arc-shaped groove pulls the push-pull rod, the four clamping frames are matched to position and clamp the four sides of the mold, subsequent grinding of the mold is more accurate, and the grinding effect is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of molds, in particular to a mold polishing device with automatic adjustment function. BACKGROUND

[0002] In an injection mold, the mold needs to be opened, which means that the mold surface is machined into the required shape through milling, grinding and other steps. In the polishing process of the traditional polishing device, the mold needs to be positioned and clamped first, and then the angle of the mold needs to be adjusted constantly during polishing in order to cooperate with the polishing work.

[0003] Because different molds require different shapes, the angles of the molds also vary. The existing mold polishing device has a limited adjustment range for the mold, which makes the adjustment of the mold less flexible and prone to dead angles, making it difficult to adapt to molds of various required shapes. In addition, the mold angle needs to be adjusted constantly during polishing, which makes it difficult to maintain the stability of the mold with simple clamping, thereby affecting the polishing effect. SUMMARY

[0004] In order to overcome the above-mentioned shortcomings, the present application provides a mold polishing device with automatic adjustment function, which can expand the required range of motion of the mold by three-axis adjustment to make the polishing work more flexible, and can press and adsorb the mold in multiple ways during clamping to make the mold more stable during angle adjustment and polishing, thereby improving the polishing effect.

[0005] The technical scheme is: a mold polishing device with automatic adjustment function, comprising:

[0006] a base;

[0007] a mounting frame fixed to the base;

[0008] a first adjustment mechanism arranged between the base and the mounting frame;

[0009] a second adjustment mechanism arranged on the first adjustment mechanism;

[0010] a mold placed on the second adjustment mechanism;

[0011] a clamping mechanism for positioning and clamping four sides of the mold, arranged on the second adjustment mechanism.

[0012] Further, the first adjustment mechanism comprises: a hydraulic rod installed in the base; a rotating shaft rotatably connected to the telescopic end of the hydraulic rod, the top of the rotating shaft penetrating into the mounting frame; a sleeve ring rotatably connected to the bottom of the mounting frame, the sleeve ring being slidably connected with the side wall of the rotating shaft; a worm gear one fixed to the outside of the sleeve ring; a motor one installed at the inner bottom of the mounting frame; a worm one fixed to the output shaft of the motor one, the worm one being engaged with the worm gear one.

[0013] Furthermore, the second adjustment mechanism includes: a rotating block fixed to the top of the rotating shaft, on which a double-shaft block is rotatably connected, and on which another rotating block is rotatably connected; two worm gears, respectively fixed to one end of the two shafts of the double-shaft block; two motors, respectively mounted on one side of the two rotating blocks; two worms, respectively fixed to one end of the output shaft of the two motors, and the two worms meshing with the two worm gears; a support frame, fixed to the top of the rotating block located above, with a limit groove on one side of the support frame and air holes on all four sides of the top, the mold being placed on the top of the support frame, and the bottom of the mold contacting the four air holes.

[0014] Furthermore, the limiting groove of the support frame is formed by a horizontal groove and two slots connected together, with the two slots located at both ends of the horizontal groove.

[0015] Furthermore, the clamping mechanism includes: four clamping frames evenly spaced apart, slidably connected to the four sides of the top of the support frame; four push-pull rods evenly spaced apart, fixedly connected to the bottom of the four clamping frames, each push-pull rod having an air groove communicating with the inside of the clamping frame; a limiting plate rotatably connected to the bottom of the support frame, the limiting plate having four arc-shaped grooves, the ends of the four push-pull rods being close to each other being located in the four arc-shaped grooves; a limiting block fixedly connected to one side of the bottom of the limiting plate; and a drive rod rotatably connected to the limiting block, one end of the drive rod being located in one of the slots.

[0016] Furthermore, it also includes a reinforcing mechanism disposed between the clamping frame, the support frame, and the push-pull rods. The reinforcing mechanism includes: four pressure blocks, which are slidably connected to the four clamping frames, with the sides of the four pressure blocks flush with the sides of the four clamping frames; four rubber rings, which are installed in the four air holes; four piston cylinders, which are fixed to the inner top of the support frame, with the four push-pull rods slidably connected to the four piston cylinders; four piston rings, which are installed on the four push-pull rods, with the four piston rings slidably connected to the inner walls of the four piston cylinders; four flexible hoses (first type), which are connected to one side of the four piston cylinders, with the other end of each flexible hose connected to one of the four air holes; and four flexible hoses (second type), which are connected to the other side of the four piston cylinders, with the other end of each flexible hose connected to the air grooves of the four push-pull rods.

[0017] Furthermore, it also includes four baffles respectively fixed to the four clamping frames on opposite sides, with the tops of the four baffles contacting the inner top of the support frame.

[0018] Furthermore, it also includes a dust-shielding sleeve connected to the top surface of the mounting frame, with the top of the dust-shielding sleeve contacting the bottom surface of the support frame.

[0019] Furthermore, it also includes four tension springs, which are connected to the four corners of the bottom of the support frame and the four corners of the top of the mounting frame via hooks.

[0020] The beneficial effects are as follows: 1. The present invention drives the limiting plate to rotate by pushing and pulling rod, so that the arc groove pulls the pushing and pulling rod, thereby enabling the four clamping frames to cooperate in positioning and clamping the four sides of the mold, thereby making the subsequent grinding of the mold more precise and improving the grinding effect.

[0021] 2. By controlling the output shafts of the two motors, the two worm gears are driven to rotate a certain number of times, causing the mold and support frame to rotate at a certain angle on the two axes of the double-axis block, thus enabling the mold to be adjusted in space. By controlling the extension length of the hydraulic rod, the horizontal height of the mold is controlled, and by controlling the number of rotations of the worm gear driven by the first motor, the rotation angle of the mold on the horizontal plane is controlled. Thus, the mold can be adjusted in three axes under the cooperation of the first and second adjustment mechanisms, expanding the range of motion required for grinding, making the grinding work more flexible, and further improving the grinding effect.

[0022] 3. The clamping frame moves to bring the pressure block into contact with the mold. The push-pull rod drives the piston ring to squeeze the gas in the piston cylinder into the clamping frame for expansion, so that the pressure block applies pressure to the side of the mold. At the same time, the piston ring draws gas from the air hole to generate negative pressure, which adsorbs the mold onto the surface of the support frame, making the clamping and fixing of the mold more sufficient, thus making the mold more stable during grinding and significantly improving the grinding effect. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0024] Figure 2 This is a cross-sectional three-dimensional structural diagram of the present invention.

[0025] Figure 3 This is a partial cross-sectional three-dimensional structural schematic diagram of the present invention.

[0026] Figure 4 For the present invention Figure 3 A magnified three-dimensional structural diagram at point A in the middle.

[0027] Figure 5 This is a partial cross-sectional three-dimensional structural schematic diagram of the first adjustment mechanism of the present invention.

[0028] Figure 6 This is a three-dimensional structural diagram of the first adjustment mechanism of the present invention.

[0029] Figure 7 This is a partial cross-sectional three-dimensional structural schematic diagram of the second adjustment mechanism of the present invention.

[0030] Figure 8 This is a three-dimensional structural diagram showing the disassembled components of the second adjustment mechanism, dust-shielding sleeve, and tension spring of the present invention.

[0031] Figure 9 This is a partially disassembled three-dimensional structural diagram of the second adjustment mechanism of the present invention.

[0032] Figure 10 This is a partial three-dimensional structural diagram of the clamping mechanism and reinforcing mechanism of the present invention.

[0033] Figure 11 This is a partial cross-sectional three-dimensional structural schematic diagram of the clamping mechanism and reinforcing mechanism of the present invention.

[0034] Figure 12 This is a partial cross-sectional perspective view of the clamping mechanism and support frame of the present invention.

[0035] Figure 13 This is a partial three-dimensional structural diagram of the clamping mechanism, support frame, and baffle of the present invention.

[0036] Figure 14 This is a three-dimensional structural diagram of the clamping mechanism of the present invention.

[0037] Figure 15 This is a partial cross-sectional three-dimensional structural schematic diagram of the reinforcing mechanism of the present invention.

[0038] Figure 16 This is a partial cross-sectional three-dimensional structural diagram of the reinforcing mechanism and support frame of the present invention.

[0039] Figure 17 This is a partially disassembled three-dimensional structural diagram of the reinforcing mechanism and clamping mechanism of the present invention.

[0040] Parts and their numbers in the diagram: 0_Mold, 1_Base, 2_Mounting frame, 31_Hydraulic rod, 32_Rotating shaft, 33_Collar, 34_Worm wheel one, 35_Motor one, 36_Worm one, 41_Rotating block, 42_Double shaft block, 43_Worm wheel two, 44_Motor two, 45_Worm two, 46_Support frame, 461_Horizontal groove, 462_Card groove, 463_Air hole, 51_Clamping frame, 52_Push-pull rod, 53_Limiting plate, 531_Arc groove, 54_Limiting block, 55_Drive rod, 61_Pressure block, 62_Rubber ring, 63_Piston cylinder, 64_Piston ring, 65_Hose one, 66_Hose two, 7_Baffle, 8_Dust-shielding sleeve, 9_Tension spring. Detailed Implementation

[0041] The technical solution of the present invention will be further described below with reference to the accompanying drawings.

[0042] Example 1: A mold grinding device with automatic adjustment function, such as Figures 1-17 As shown, it includes:

[0043] Base 1;

[0044] Mounting frame 2 is welded to base 1;

[0045] The first adjustment mechanism is located between the base 1 and the mounting frame 2;

[0046] The second regulating mechanism is located on the first regulating mechanism;

[0047] Mold 0 is placed on the second adjustment mechanism. The first adjustment mechanism and the second adjustment mechanism work together to adjust the mold 0 in three axes. The first adjustment mechanism can also adjust the horizontal height of the mold 0.

[0048] The clamping mechanism, used to position and clamp the four sides of the mold, is located on the second adjustment mechanism.

[0049] The first adjustment mechanism includes: a hydraulic rod 31, installed inside the base 1; a rotating shaft 32, rotatably connected to the telescopic end of the hydraulic rod 31, with the top of the rotating shaft 32 passing through the mounting frame 2; a collar 33, rotatably connected to the bottom of the mounting frame 2, and the collar 33 is slidably connected to the side wall of the rotating shaft 32; a worm gear 34, connected to the outside of the collar 33 via a flat key; a motor 35, installed at the inner bottom of the mounting frame 2; and a worm gear 36, connected to the output shaft of the motor 35 via a coupling, the worm gear 36 meshing with the worm gear 34.

[0050] The second adjustment mechanism includes: a rotating block 41 bolted to the top of the rotating shaft 32, on which a double-shaft block 42 is rotatably connected, and another rotating block 41 is rotatably connected to the other shaft of the double-shaft block 42; two worm gears 43, which are respectively connected to one end of the two shafts of the double-shaft block 42 by flat keys; two motors 44, which are respectively installed on one side of the two rotating blocks 41; two worms 45, which are respectively connected to one end of the output shaft of the two motors 44 by couplings, and the two worms 45 mesh with the two worm gears 43; a support frame 46 bolted to the top of the rotating block 41 located above, with a limit groove on one side of the support frame 46 and air holes 463 on all four sides of the top; a mold 0 placed on the top of the support frame 46, and the bottom of the mold 0 contacting the four air holes 463.

[0051] The limiting groove of the support frame 46 is formed by a horizontal groove 461 and two slots 462 connected together, with the two slots 462 located at both ends of the horizontal groove 461 respectively.

[0052] The clamping mechanism includes: four clamping frames 51 evenly spaced apart, slidably connected to the top four sides of the support frame 46, respectively used to clamp the four sides of the mold 0; four push-pull rods 52 evenly spaced apart, respectively welded to the bottom of the four clamping frames 51, the push-pull rods 52 having air grooves communicating with the inside of the clamping frames 51; a limiting plate 53 rotatably connected to the bottom of the support frame 46, the limiting plate 53 having four arc-shaped grooves 531, the ends of the four push-pull rods 52 being close to each other being located in the four arc-shaped grooves 531; a limiting block 54 welded to one side of the bottom of the limiting plate 53; and a drive rod 55 rotatably connected to the limiting block 54, one end of the drive rod 55 being located in one of the slots 462.

[0053] First, the staff placed the mold to be polished into a mold. Figure 1The device shown is placed on the surface of the support frame 46 and located between the four clamping frames 51. When the mold 0 needs to be positioned and clamped, the operator first lifts one end of the drive rod 55 upwards. The drive rod 55 will rotate a certain angle on the limit block 54. At the same time, one end of the drive rod 55 moves out of the current slot 462 and into the horizontal slot 461. Then, the operator moves one end of the drive rod 55 to the other end of the horizontal slot 461, and then presses one end of the drive rod 55 downwards into another slot 462. During the swinging process of the drive rod 55, the drive rod 55 will drive the limit plate 53 to rotate 90°, which will cause the four arc-shaped slots 531 to pull the four push-pull rods 52 towards the center position, thus moving the four clamping frames 51. The four clamping frames 51 move. During the process, the four sides of the mold 0 are clamped separately, while the mold 0 is pressed against the center of the support frame 46. Then, the push-pull rod 52 drives the limiting plate 53 to rotate, causing the arc groove 531 to pull the push-pull rod 52. This allows the four clamping frames 51 to cooperate in positioning and clamping the four sides of the mold 0, making subsequent grinding of the mold 0 more precise and improving the grinding effect. After clamping, when it is necessary to adjust the spatial angle of the mold 0, the operator can control the output shafts of the two motors 44 to rotate a certain number of times. The rotation of the output shaft of one of the motors 44 will drive one of the worm gears 43 to rotate a certain angle through the worm gear 45, thereby driving the double shaft block 42, the upper rotating block 41, the support frame 46, the clamping mechanism, and the mold 0 together. By rotating a certain angle, under the interaction of forces, the output shaft of the other motor 44 rotates, which drives the worm gear 45 on it to rotate. This, in turn, drives the upper rotating block 41, support frame 46, clamping mechanism, and mold 0 to rotate along the other worm wheel 43 by a certain angle. Thus, by controlling the output shafts of the two motors 44 to drive the two worm gears 45 to rotate a certain number of revolutions, the mold 0 and support frame 46 can rotate by a certain angle on the two axes of the double-shaft block 42, thereby allowing the mold 0 to be adjusted in spatial angle. When it is necessary to raise the height of the mold 0 and adjust the horizontal angle, the operator can control the extension rod of the hydraulic rod 31 to extend and drive the rotating shaft 32 to move upward. The upward movement of the rotating shaft 32 will drive the second adjustment mechanism and clamping mechanism to rotate. The holding mechanism and mold 0 move upward together. At the same time, the operator can control the output shaft of motor 35 to drive worm gear 36 to rotate a certain number of times. The rotation of worm gear 36 will drive the second adjustment mechanism, clamping mechanism and mold 0 to rotate a certain angle horizontally through worm wheel 34. In this way, by controlling the extension length of the extension rod of hydraulic rod 31, the horizontal height of mold 0 can be controlled. And by controlling the number of rotations of worm gear 36 driven by motor 35, the rotation angle of mold 0 horizontally can be controlled. Thus, under the cooperation of the first adjustment mechanism and the second adjustment mechanism, mold 0 can be adjusted in three axes, expanding the range of motion required by mold 0 during grinding, making the grinding work more flexible, and thus further improving the grinding effect.After grinding, the workers control the output shafts of two motors (44) and one motor (35) to rotate in the opposite direction to reset the mold 0 to its initial angle. Simultaneously, the workers control the extension rod of hydraulic rod 31 to reset the horizontal height of the mold 0. Then, the workers move one end of drive rod 55 back into its original slot 462 using the same method. The reset of drive rod 55 causes the limit plate 53 to reset, and the four annular grooves press against the four push-pull rods 52, causing the four clamping frames 51 to reset and no longer clamp the mold 0. Finally, the workers remove the ground mold 0.

[0054] Example 2: Based on Example 1, such as Figures 10-17 As shown, a reinforcing mechanism is also included to enhance the fixing effect on the mold 0. This mechanism is located between the clamping frame 51, the support frame 46, and the push-pull rod 52. The reinforcing mechanism includes: four pressure blocks 61, slidably connected to the four clamping frames 51, with the sides of the four pressure blocks 61 flush with the sides of the four clamping frames 51 respectively. The pressure blocks 61 apply pressure to the four sides of the mold 0 during clamping; four rubber rings 62, respectively installed in the four air holes 463, to improve the sealing between the air holes 463 and the bottom surface of the mold 0; and four piston cylinders 63. The four push-pull rods 52 are bolted to the inner top of the support frame 46 and are slidably connected to the four piston cylinders 63 respectively. The four piston rings 64 are respectively installed on the four push-pull rods 52 and are slidably connected to the inner walls of the four piston cylinders 63 respectively. The four hoses 65 are respectively connected to one side of the four piston cylinders 63 and the other end of the four hoses 65 is respectively connected to the four air holes 463. The four hoses 66 are respectively connected to the other side of the four piston cylinders 63 and the other end of the four hoses 66 is respectively connected to the air grooves of the four push-pull rods 52.

[0055] During the clamping of mold 0, the movement of clamping frame 51 causes pressure block 61 to move, and pressure block 61 comes into contact with mold 0. The movement of push rod 52 causes piston ring 64 to move, and piston ring 64 forces gas from piston cylinder 63 through hose 66 into the air groove of push rod 52. Gas in the air groove then enters clamping frame 51, causing the gas in clamping frame 51 to expand and press against the side of mold 0 through pressure block 61. This pressure block 61 applies pressure to mold 0 during clamping. Simultaneously, the movement of piston ring 64 draws gas from air hole 463. Rubber ring 62... This makes the air hole 463 and the bottom surface of the mold 0 more sealed. The gas in the air hole 463 is drawn to generate negative pressure, which adsorbs the mold 0 onto the surface of the support frame 46. Thus, the clamping frame 51 moves to drive the pressure block 61 to contact the mold 0. The push-pull rod 52 drives the piston ring 64 to squeeze the gas in the piston cylinder 63 into the clamping frame 51 for expansion. This causes the pressure block 61 to apply pressure to the side of the mold 0. At the same time, the piston ring 64 draws the gas in the air hole 463 to generate negative pressure, which adsorbs the mold 0 onto the surface of the support frame 46. This makes the clamping and fixing of the mold 0 more sufficient, which makes the mold 0 more stable during grinding and significantly improves the grinding effect.

[0056] Example 3: Based on Example 2, such as Figures 1-13 As shown, it also includes four baffles 7 respectively welded to the four clamping frames 51 on opposite sides. The tops of the four baffles 7 are in contact with the inner top of the support frame 46. The four baffles 7 are used to block the top surface of the support frame 46 when grinding the mold 0, so as to prevent the transmission parts inside the support frame 46 from getting stuck when grinding the mold 0.

[0057] It also includes a dust cover 8, which is connected to the top surface of the mounting frame 2. The top of the dust cover 8 contacts the bottom surface of the support frame 46. The dust cover 8 is made of elastic material and can prevent the second adjustment mechanism from getting stuck when grinding the mold 0.

[0058] It also includes four tension springs 9, which are connected to the four bottom corners of the support frame 46 and the four top corners of the mounting frame 2 respectively through hooks. When the second adjustment mechanism adjusts the angle of the mold 0 and the support frame 46, they can pull the upward part of the support frame 46 and effectively distribute the force on the second adjustment mechanism.

[0059] Initially, the dust-shielding sleeve 8 is in a compressed state. The movement of the clamping frame 51 will cause the baffle 7 to move together. After the baffle 7 moves, it will block the top of the support frame 46. When raising or lowering the horizontal height of the mold 0, the top of the dust-shielding sleeve 8 will always be in contact with the bottom surface of the support frame 46. In this way, during the grinding process of the mold 0, the baffle 7 and the dust-shielding sleeve 8 respectively prevent the dust from entering the support frame 46 and the second adjustment mechanism and causing jamming of the transmission parts, making the adjustment of the mold 0 angle more precise and the clamping more stable. When the second adjustment mechanism adjusts the mold 0, part of the support frame 46 will be pressed down and another part will be raised. The tension spring 9 in the raised part will be stretched and generate a downward pulling force on the support frame 46, which can distribute the force after the adjustment by the second adjustment mechanism, thereby improving durability.

[0060] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A mold grinding device with automatic adjustment function, characterized in that, include: Base (1); Mounting frame (2) is fixed to base (1); The first adjustment mechanism is located between the base (1) and the mounting frame (2); The second regulating mechanism is located on the first regulating mechanism; The mold (0) is placed on the second adjustment mechanism; The clamping mechanism is used to position and clamp the four sides of the mold (0) and is located on the second adjustment mechanism.

2. The mold grinding equipment with automatic adjustment function according to claim 1, characterized in that, The first adjustment mechanism includes: a hydraulic rod (31) installed in the base (1); a rotating shaft (32) rotatably connected to the telescopic end of the hydraulic rod (31), with the top of the rotating shaft (32) inserted into the mounting frame (2); a collar (33) rotatably connected to the bottom of the mounting frame (2), and the collar (33) slidably connected to the side wall of the rotating shaft (32); a worm gear (34) fixed to the outside of the collar (33); a motor (35) installed in the inner bottom of the mounting frame (2); and a worm (36) fixed to the output shaft of the motor (35), and the worm (36) meshing with the worm gear (34).

3. The mold grinding equipment with automatic adjustment function according to claim 2, characterized in that, The second adjustment mechanism includes: a rotating block (41) fixed to the top of the rotating shaft (32), on which a double shaft block (42) is rotatably connected, and on the other shaft of the double shaft block (42) another rotating block (41) is rotatably connected; two worm gears (43) fixed to one end of the two shafts of the double shaft block (42); two motors (44) installed on one side of the two rotating blocks (41); two worms (45) fixed to one end of the output shaft of the two motors (44), and the two worms (45) mesh with the two worm gears (43); a support frame (46) fixed to the top of the rotating block (41) located above, with a limit groove on one side of the support frame (46) and air holes (463) on all four sides of the top; a mold (0) placed on the top of the support frame (46), and the bottom of the mold (0) in contact with the four air holes (463).

4. The mold grinding equipment with automatic adjustment function according to claim 3, characterized in that, The limiting groove of the support frame (46) is formed by a horizontal groove (461) and two slots (462), with the two slots (462) located at the two ends of the horizontal groove (461).

5. A mold grinding device with automatic adjustment function according to claim 4, characterized in that, The clamping mechanism includes: four clamping frames (51) evenly spaced apart, which are slidably connected to the top four sides of the support frame (46); four push-pull rods (52) evenly spaced apart, which are fixed to the bottom of the four clamping frames (51), and the push-pull rods (52) have air grooves that communicate with the inside of the clamping frames (51); a limiting plate (53) rotatably connected to the bottom of the support frame (46), and the limiting plate (53) has four arc-shaped grooves (531), and the ends of the four push-pull rods (52) that are close to each other are located in the four arc-shaped grooves (531); a limiting block (54) fixed to one side of the bottom of the limiting plate (53); and a drive rod (55) rotatably connected to the limiting block (54), and one end of the drive rod (55) is located in one of the slots (462).

6. A mold grinding device with automatic adjustment function according to claim 5, characterized in that, It also includes a reinforcing mechanism located between the clamping frame (51), the support frame (46), and the push-pull rod (52). The reinforcing mechanism includes: four pressure blocks (61), which are slidably connected to the four clamping frames (51), with the sides of the four pressure blocks (61) flush with the sides of the four clamping frames (51); four rubber rings (62), which are installed in the four air holes (463); and four piston cylinders (63), which are fixed to the inner top of the support frame (46), with the four push-pull rods (52) connected to the four piston cylinders (463). 63) Sliding connection; four piston rings (64) are respectively installed on four push-pull rods (52), and the four piston rings (64) are slidably connected to the inner walls of the four piston cylinders (63); four hoses (65) are respectively connected to one side of the four piston cylinders (63), and the other end of the four hoses (65) is respectively connected to four air holes (463); four hoses (66) are respectively connected to the other side of the four piston cylinders (63), and the other end of the four hoses (66) is respectively connected to the air grooves of the four push-pull rods (52).

7. A mold grinding device with automatic adjustment function according to claim 6, characterized in that, It also includes four baffles (7) respectively fixed to the four clamping frames (51) on opposite sides, with the top of the four baffles (7) contacting the inner top of the support frame (46).

8. A mold grinding device with automatic adjustment function according to claim 7, characterized in that, It also includes a dust cover (8) connected to the top surface of the mounting frame (2), the top of which contacts the bottom surface of the support frame (46).

9. A mold grinding device with automatic adjustment function according to claim 8, characterized in that, It also includes four tension springs (9), which are connected to the bottom four corners of the support frame (46) and the top four corners of the mounting frame (2) respectively by hooks.

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