Mold surface polishing equipment adaptive to manufacturing of injection mold

Abstract

The invention relates to the technical field of mold surface polishing, in particular to mold surface polishing equipment suitable for injection mold manufacturing, which comprises a base and a material placing disc positioned at the top of the base and used for rotating a mold, and a polishing assembly suitable for regulating and controlling the inclined surface of the mold is arranged above the material placing disc. The top of the base is connected with a moving seat through a first electric cylinder sliding table, and a pushing seat for adjusting the direction and position of the polishing assembly is arranged on the moving seat. According to the multi-surface polishing device, the linear state and the L-shaped state between the pushing seat and the mounting seat are switched, and the material placing disc is matched to carry out anti-slip placement and rotating treatment on the mold, so that multi-surface polishing treatment on the transverse surface or the vertical surface of the mold is realized; and the polishing assembly is combined with the laser three-dimensional scanner and the control panel, so that when the inclined surface is polished, the polishing disc is attached to the surface of the mold in a self-adaptive mode, uniform distribution of contact pressure is achieved, and deviation of surface precision caused by excessive or invalid polishing due to uneven pressure is effectively eliminated.

Description

Technical Field

[0001] The invention relates to the technical field of mold surface polishing, and in particular to a mold surface polishing device suitable for manufacturing injection molds. Background Art

[0002] Injection molds are key tools for producing batches of identical plastic parts and are widely used across numerous industries. Polishing is a crucial step in the mold manufacturing process. Polishing significantly reduces mold surface roughness, resulting in a smoother, more refined surface for the molded part. It also effectively prevents plastic parts from sticking to the mold during the cooling phase, ensuring the product's structural integrity and excellent appearance.

[0003] For example, the existing publication number CN116872071A discloses a polishing device for injection molds. This device uses a driving mechanism to move the polishing mechanism in the vertical, longitudinal, and transverse directions, thereby replacing the manual movement of the polishing mechanism to polish the injection mold. By applying constant pressure to the polishing mechanism, the polishing efficiency and quality are improved to a certain extent. However, in actual application, there are still certain limitations:

[0004] First, the multi-directional movement mode of the polishing mechanism can only realize the movement of the polishing disc in the horizontal plane, resulting in it being able to polish only the one-way surface (i.e., the top surface) of the injection mold. It is difficult to polish multiple vertical polishing surfaces at the same time, and additional manual flipping is required, which not only increases the complexity of the operation process, but also reduces the overall polishing efficiency.

[0005] Secondly, in order to ensure the smooth demolding of injection molded parts, the side walls of the injection mold are usually tilted at a certain angle. However, the polishing disk of the polishing device adopts a horizontal fixed rotation mode, which makes it difficult for the polishing surface of the polishing disk to fully contact the inclined surface of the mold when polishing the inclined surface. As a result, the actual area involved in polishing is small, thereby reducing the polishing efficiency; on the other hand, when the polishing disk moves horizontally on the inclined surface with a height difference, the extrusion force may be too large or too small, resulting in uneven contact pressure between the polishing disk and various areas of the inclined surface, causing deviations in the mold surface accuracy and affecting the mold quality.

[0006] In view of the above technical defects, a solution is now proposed. Summary of the Invention

[0007] The purpose of the present invention is to provide a mold surface polishing device suitable for injection mold manufacturing to solve the above-mentioned technical defects.

[0008] The objectives of the present invention can be achieved through the following technical solutions: A mold surface polishing device suitable for injection mold manufacturing includes a base and a material placement tray located on the top of the base for rotating the mold. A polishing assembly that adapts to and controls the inclined surface of the mold is provided above the material placement tray. The top of the base is connected to a movable seat via a first electric cylinder slide, and the movable seat is provided with a push seat for adjusting the direction and position of the polishing assembly.

[0009] The polishing assembly includes a movable platform and a polishing disc. A laser three-dimensional scanner for collecting data on the height difference of the mold surface is installed on one side of the bottom of the movable platform. A control panel is installed on the top of the base, and a controller in the control panel adjusts the position of the polishing disc.

[0010] Preferably, the loading tray is rotatably mounted on the top of the base, and a number of spring telescopic pins are fixedly mounted on the top of the loading tray, the ends of the telescopic sections of the spring telescopic pins can be moved to the inside of the loading tray, and a first servo motor for driving the loading tray to rotate is installed on the base through bolts.

[0011] Preferably, the first electric cylinder slide is fixedly mounted on the top of the base, the movable seat is mounted on the slide of the first electric cylinder slide, and the movable seat is slidably connected to the pushing seat.

[0012] Preferably, a rotating shaft is rotatably connected to the inclined side wall of the pushing seat, and a mounting seat is fixedly connected to the rotating shaft. A second electric cylinder slide for driving the moving platform is fixedly installed on the mounting seat, and a rotating rod for driving the rotating shaft is rotatably installed on the pushing seat.

[0013] Preferably, a screw rod threadably connected to the pushing seat is rotatably mounted on the movable seat, and a second servo motor is fixedly mounted to drive the screw rod to rotate, a spiral groove is provided on the rotating rod, and a linear groove is connected to one side of the spiral groove, a guide pin adapted to the spiral groove is fixedly connected to the movable seat, small bevel teeth are fixedly connected to the rotating rod, and large bevel teeth engaged with the small bevel teeth are fixedly connected to the rotating shaft.

[0014] Preferably, a movable platform is installed at the bottom of the movable platform through an electric push rod, and a rotating motor is installed on the movable platform. A rotating drum for temporarily storing the polishing liquid is fixedly connected to the output shaft of the rotating motor. A sphere is provided inside the rotating drum, and the sphere is fixedly connected to a turntable through a hollow tube. The polishing disk is detachably mounted on the turntable.

[0015] Preferably, a ring seat is provided between the rotating cylinder and the sphere, and rotating pins distributed in a cross are rotatably installed between the ring seat, the rotating cylinder and the sphere. A first piston block is sealingly and slidingly connected inside the rotating cylinder, and a liquid pushing spring is connected between the first piston block and the sphere.

[0016] Preferably, a plurality of liquid storage chambers are provided inside the turntable, and the internal sealing and sliding connection of the liquid storage chamber is provided with a second piston block. A liquid outlet penetrating the bottom of the turntable is provided on the side of the liquid storage chamber away from the hollow tube, and a triangular slit is provided on the polishing disc corresponding to the liquid outlet.

[0017] Preferably, a liquid inlet penetrating the top of the turntable is provided on one side of the liquid storage chamber, a rotating rod is rotatably installed in the liquid storage chamber, and a blocking disk is fixed on the rotating rod and is sealed and rotatably connected to the inner wall of one side of the liquid storage chamber, and two groups of through-ports that are not connected to the corresponding liquid inlets and liquid outlets at the same time are provided on the blocking disk.

[0018] Preferably, guide blocks are fixedly connected to both sides of the second piston block, two groups of guide rods cooperating with corresponding guide blocks are installed on the rotating rod, a tension spring is fixedly connected between the second piston block and the liquid storage chamber, a hose is connected between the hollow tube and the first piston block, and a connecting tube is installed between the liquid inlet and the hollow tube.

[0019] The beneficial effects of the present invention are as follows:

[0020] (1) The present invention realizes multi-directional adjustment of the horizontal or vertical polishing surface of the polishing disc by switching the "-" and "∟" shapes between the push seat and the mounting seat, and cooperates with the placement disc to perform non-slip placement and rotation processing on the injection mold. Compared with the prior art that can only realize the polishing processing of the top of the injection mold, the present invention can also realize polishing processing on multiple vertical surfaces, thereby achieving the effect of multi-faceted polishing;

[0021] In addition, the free angular deflection of the turntable enables the polishing disc to autonomously adapt to the surface of the injection mold when polishing inclined surfaces, ensuring a larger polishing area and improving polishing efficiency. Furthermore, the synchronous horizontal movement of the laser 3D scanner collects real-time data on the height difference of the mold surface. The controller generates dynamic compensation signals based on the data differences, precisely adjusting the extension and contraction of the electric push rods in each area of ​​the polishing surface to evenly distribute the contact pressure between the polishing disc and the inclined surface. This effectively eliminates deviations in surface accuracy caused by excessive or ineffective polishing due to uneven pressure, achieving a consistent polishing effect.

[0022] (2) The turntable of the present invention carries the polishing disc and rotates at high speed for polishing. Centrifugal force is used to move the second piston block, and the polishing liquid in the liquid storage chamber is quantitatively infiltrated into the contact interface between the polishing disc and the mold through the triangular slit, forming a composite high-efficiency polishing effect of chemical reaction and mechanical grinding; and through the linkage design of the rotating rod, the blocking disc, the first piston block and the liquid pushing spring, when the polishing liquid in the liquid storage chamber is insufficient, the polishing liquid temporarily stored in the rotating drum is automatically filled into the liquid storage chamber, realizing the automation of the liquid supply system, so as to ensure the continuity of the polishing process and avoid the efficiency loss caused by shutdown and refilling; in addition, with the help of the free angle deflection of the turntable, the separation gap between the polishing disc and the inclined surface can be dynamically eliminated, and the polishing liquid can be prevented from excessively overflowing in the non-contact area under the action of centrifugal force, thereby ensuring the uniformity of the liquid film in the processing area and significantly reducing the consumption of the polishing liquid. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will be further described below with reference to the accompanying drawings;

[0024] Figure 1 Schematic diagram of the structure of the top surface of the injection mold polishing of the present invention;

[0025] Figure 2 Schematic diagram of the structure of the polishing of the side wall surface of the injection mold according to the present invention;

[0026] Figure 3 1 is a schematic diagram of the disassembly of the base of the present invention;

[0027] Figure 4 It is a structural schematic diagram of the mobile seat of the present invention;

[0028] Figure 5 It is a structural schematic diagram of the push seat of the present invention;

[0029] Figure 6 It is a schematic diagram of the installation of the polishing assembly of the present invention;

[0030] Figure 7 It is a schematic structural diagram of the polishing assembly of the present invention;

[0031] Figure 8 It is a structural schematic diagram of the rotary drum of the present invention;

[0032] Figure 9 It is a structural schematic diagram of the turntable of the present invention;

[0033] Figure 10 It is a structural schematic diagram of the first piston block of the present invention.

[0034] Legend:

[0035] 1. Base; 11. Material tray; 12. First electric cylinder slide; 13. Moving seat; 14. Spring retractable pin; 15. Screw; 16. Guide pin;

[0036] 2. Polishing assembly; 21. Moving table; 22. Polishing disc; 23. Electric push rod; 24. Movable table; 25. Rotating drum; 26. Sphere; 27. Hollow tube; 28. Rotating disc; 29. ​​Ring seat; 210. First piston block; 211. Liquid pushing spring; 212. Liquid storage chamber; 213. Second piston block; 214. Triangular slit; 215. Rotating rod; 216. Blocking disc; 217. Guide block; 218. Guide rod; 219. Tension spring; 220. Hose; 221. Connecting pipe;

[0037] 3. Pushing seat; 31. Mounting seat; 32. Second electric cylinder slide; 33. Rotating rod; 34. Spiral groove; 35. Linear groove; 36. Small bevel gear; 37. Large bevel gear;

[0038] 4. Laser 3D scanner;

[0039] 5. Control panel. DETAILED DESCRIPTION

[0040] The following will provide a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0041] Example 1: Please refer to Figures 1-9 As shown, the existing technology is difficult to achieve polishing of multiple polishing surfaces at the same time, and the problem of reduced surface accuracy when polishing inclined surfaces can be solved by the following solution:

[0042] In this embodiment, a mold surface polishing device suitable for injection mold manufacturing includes a base 1 and a material placement tray 11 located on top of the base 1 for rotating the mold. A polishing assembly 2 is disposed above the material placement tray 11 to adjust the mold's inclined surface. The top of the base 1 is connected to a movable base 13 via a first electric cylinder slide 12, and a pusher 3 is disposed on the movable base 13 to adjust the direction and position of the polishing assembly 2.

[0043] The polishing assembly 2 includes a movable platform 21 and a polishing plate 22. A laser 3D scanner 4 is installed on the bottom side of the movable platform 21 to collect data on the height difference of the mold surface. A control panel 5 is installed on the top of the base 1, and a controller in the control panel 5 controls the position of the polishing plate 22.

[0044] The laser three-dimensional scanner 4 moves horizontally to collect data on the height difference of the mold surface in real time. The controller generates a dynamic compensation signal based on the data difference, and accurately adjusts the extension and contraction of the electric push rod 23 in each area of ​​the polishing surface to ensure that the contact pressure between the polishing disk 22 and the inclined surface is evenly distributed, effectively eliminating the deviation in surface accuracy caused by excessive or ineffective polishing due to uneven pressure, and achieving a consistent polishing effect.

[0045] The material tray 11 is rotatably mounted on the top of the base 1, and a plurality of spring telescopic pins 14 are fixedly mounted on the top of the material tray 11. The ends of the telescopic sections of the spring telescopic pins 14 can be moved into the interior of the material tray 11. After the injection mold is placed, the telescopic sections of the plurality of spring telescopic pins 14 directly below it are pressed into the interior of the material tray 11, and the horizontal movement of the injection mold is limited by the remaining unpressed spring telescopic pins 14.

[0046] A first servo motor driving the loading tray 11 to rotate is installed on the base 1 by bolts. The loading tray 11 is used to place the injection mold. The first servo motor drives the loading tray 11 to deflect, which can switch multiple vertical polishing surfaces of the injection mold to the vertical polishing area, thereby realizing multi-sided polishing processing, and combined with the continuous rotation of the loading tray 11, realizing surface polishing processing of the cylindrical injection mold.

[0047] The first electric cylinder slide 12 is fixedly mounted on the top of the base 1 , the moving seat 13 is mounted on the slide of the first electric cylinder slide 12 , and the moving seat 13 is slidably connected to the pushing seat 3 .

[0048] A rotating shaft is rotatably connected to the inclined side wall of the pushing seat 3, and a mounting seat 31 is fixed to the rotating shaft. The rotating shafts are all installed on the 45° inclined surface of the pushing seat 3 and the mounting seat 31, and the rotating shaft is perpendicular to the inclined surface, so that when the rotating shaft rotates, the horizontal and vertical distribution processing between the pushing seat 3 and the mounting seat 31 is realized. A second electric cylinder slide 32 that drives the moving platform 21 to move is fixedly installed on the mounting seat 31, and a rotating rod 33 that drives the rotating shaft to rotate is rotatably installed on the pushing seat 3.

[0049] A screw rod 15 threadedly connected to the push seat 3 is rotatably mounted on the movable seat 13, and a second servo motor is fixedly mounted to drive the screw rod 15 to rotate. A spiral groove 34 is formed on the rotating rod 33, and a linear groove 35 is connected to one side of the spiral groove 34. A guide pin 16 adapted to the spiral groove 34 is fixedly connected to the movable seat 13. Small bevel teeth 36 are fixedly connected to the rotating rod 33, and large bevel teeth 37 meshing with the small bevel teeth 36 are fixedly connected to the rotating shaft. The meshing rotation of the large bevel teeth 37 is driven by the small bevel teeth 36 to achieve torque amplification, thereby optimizing the rotation effect of driving the mounting seat 31.

[0050] The second servo motor drives the screw rod 15 to rotate, and the screw rod 15 drives the push seat 3 to move away from the material loading tray 11. During the movement, the guide pin 16 moves in the spiral groove 34 on the rotating rod 33. Combined with the guidance of the guide pin 16 by the spiral groove 34, the rotating rod 33 is prompted to rotate multiple circles. The small bevel teeth 36 engage the large bevel teeth 37, driving the rotating shaft to deflect 90°.

[0051] The mounting seat 31 and the pushing seat 3 are switched from a "I" shape to a "∟" shape to realize the change of the direction of the polishing surface of the polishing disc 22, thereby achieving the polishing of the top of the injection mold while also polishing multiple vertical surfaces, achieving the effect of multi-sided polishing without the mold being turned over, and the pushing seat 3 is driven to move by the screw rod 15, combined with the movement of the guide pin 16 in the linear groove 35 on the rotating rod 33, so that the distances between different vertical polishing surfaces of the injection mold and the mounting seat 31 are equal, and the auxiliary polishing disc 22 is fully in contact with the surface of the injection mold.

[0052] A movable platform 24 is mounted on the bottom of the movable platform 21 via an electric push rod 23, and a rotating motor is mounted on the movable platform 24. A rotating drum 25 for temporarily storing the polishing liquid is fixedly connected to the output shaft of the rotating motor. A sphere 26 is provided inside the rotating drum 25, and the sphere 26 is fixedly connected to a turntable 28 via a hollow tube 27. The polishing disc 22 is detachably mounted on the turntable 28. The polishing disc 22 is fixed to the bottom of the turntable 28 by screws, so that the polishing disc 22 can be replaced.

[0053] The electric push rod 23 pushes the movable platform 24 to move downward, causing the polishing disc 22 to contact the top surface of the injection mold. The first electric cylinder slide 12 and the moving seat 13 move slowly horizontally. The second electric cylinder slide 32 drives the movable platform 21 to move horizontally, so that the moving path of the polishing disc 22 completely covers the top surface of the injection mold. The rotating motor drives the rotating drum 25 to carry the turntable 28 to rotate, and the turntable 28 drives the polishing disc 22 to rotate to polish the mold surface.

[0054] A ring seat 29 is provided between the rotating drum 25 and the sphere 26, and a cross-distributed rotating pin is rotatably installed between the ring seat 29, the rotating drum 25 and the sphere 26. The rotating drum 25 is combined with the ring seat 29, the cross-distributed rotating pin, the sphere 26 and the hollow tube 27 to cause the turntable 28 to carry the polishing disk 22 to rotate, and realize the free angle deflection of the turntable 28, so that when polishing the inclined surface, the polishing disk 22 can autonomously adapt to the surface of the injection mold to ensure a larger polishing area, improve the polishing efficiency, and further assist the polishing disk 22 to evenly distribute the contact pressure of the inclined surface. The first piston block 210 is sealed and slidably connected inside the rotating drum 25, and a liquid pushing spring 211 is connected between the first piston block 210 and the sphere 26.

[0055] Example 2: Please refer to Figures 6-10As shown, the problem that the polishing effect cannot be further improved by polishing only with a polishing disc can be solved by the following solutions:

[0056] In this embodiment, a movable platform 24 is installed at the bottom of the movable platform 21 through an electric push rod 23, and a rotating motor is installed on the movable platform 24. A rotating drum 25 for temporarily storing the polishing liquid is fixedly connected to the output shaft of the rotating motor, which is used for temporarily storing the polishing liquid replenished in the liquid storage chamber 212, and a one-way liquid injection port is installed on the top of one side of the rotating drum 25 to realize the injection of the polishing liquid. A sphere 26 is provided inside the rotating drum 25, and the sphere 26 is fixedly connected to a turntable 28 through a hollow tube 27. The polishing disk 22 is detachably mounted on the turntable 28.

[0057] A ring seat 29 is provided between the rotating cylinder 25 and the sphere 26, and rotating pins distributed in a cross are rotatably installed between the ring seat 29, the rotating cylinder 25 and the sphere 26. The first piston block 210 is sealed and slidably connected inside the rotating cylinder 25, and a liquid pushing spring 211 is connected between the first piston block 210 and the sphere 26. The first piston block 210 is pushed upward by the elastic force of the liquid pushing spring 211.

[0058] The turntable 28 has multiple liquid storage chambers 212 formed therein, and a second piston block 213 is sealingly and slidably connected to the liquid storage chambers 212. A liquid outlet is formed in the liquid storage chamber 212 on a side away from the hollow tube 27 and passes through the bottom of the turntable 28. A triangular slit 214 is formed on the polishing disc 22 at a position corresponding to the liquid outlet.

[0059] During the high-speed rotation of the turntable 28, the second piston block 213 in the multiple liquid storage chambers 212 moves under the action of the centrifugal force of the rotation, pushing the polishing liquid in the liquid storage chamber 212 into the liquid outlet, and then quantitatively penetrates into the contact interface between the polishing disc 22 and the mold through the corresponding triangular slit 214, forming a composite high-efficiency polishing effect of chemical reaction and mechanical grinding. The setting of the triangular slit 214 allows the polishing liquid to penetrate a small amount into the polishing area at the center of rotation as the polishing disc 22 rotates, while the penetration amount into the polishing area on the outer periphery of the rotation is synchronously increased, thereby achieving a uniform liquid film on the circumferential polishing surface and significantly reducing the consumption of polishing liquid.

[0060] A liquid inlet is provided on one side of the liquid storage chamber 212, which passes through the top of the turntable 28. The liquid inlet and the liquid outlet are located on the same side. A rotating rod 215 is rotatably installed in the liquid storage chamber 212, and a blocking disk 216 is fixedly connected to the rotating rod 215 and is sealed and rotatably connected to the inner wall of one side of the liquid storage chamber 212. The blocking disk 216 is provided with two groups of openings that are not connected to the corresponding liquid inlet and liquid outlet at the same time. The rotating rod 215 drives the blocking disk 216 to deflect, and the corresponding opening on the blocking disk 216 is no longer connected to the liquid outlet. The blocking disk 216 blocks the liquid outlet, and the other opening is connected to the liquid inlet. The polishing liquid is injected into the liquid storage chamber 212 through the liquid inlet and the corresponding opening.

[0061] Guide blocks 217 are fixedly connected to both sides of the second piston block 213. Two sets of guide rods 218 that cooperate with corresponding guide blocks 217 are installed on the rotating rod 215. A tension spring 219 is fixedly connected between the second piston block 213 and the liquid storage chamber 212. A hose 220 is connected between the hollow tube 27 and the first piston block 210. A connecting tube 221 is installed between the liquid inlet and the hollow tube 27.

[0062] After the polishing liquid in the liquid storage chamber 212 is discharged, the guide block 217 on one side of the second piston block 213 contacts the corresponding guide rod 218 on the rotating rod 215, causing the rotating rod 215 to drive the blocking plate 216 to deflect, so that the corresponding opening is connected to the liquid inlet. The elastic force of the liquid pushing spring 211 pushes the first piston block 210 to move upward, and the polishing liquid temporarily stored in the rotating drum 25 is injected into the liquid storage chamber 212 through the hose 220, the hollow tube 27, the connecting tube 221, the liquid inlet and the corresponding opening.

[0063] Combined with the tensile force of the tension spring 219, the second piston block 213 is prompted to reset and fill the liquid storage chamber 212 with the temporarily stored polishing liquid until the guide block 217 on the other side of the second piston block 213 contacts the corresponding guide rod 218 on the rotating rod 215, causing the rotating rod 215 to drive the blocking disk 216 to reset and deflect in the opposite direction, and the corresponding opening on the blocking disk 216 is connected to the liquid outlet again, and the blocking disk 216 blocks the liquid inlet, and the polishing liquid is continuously discharged in small quantities again.

[0064] Example 3: Please refer to Figures 1-10 As shown, the present invention also provides a method for using a mold surface polishing device suitable for injection mold manufacturing, comprising the following steps:

[0065] Step 1: Place the injection mold on top of the loading tray 11. Press the telescopic sections of several spring telescopic pins 14 directly below the injection mold into the loading tray 11. The horizontal movement of the injection mold is limited by the remaining unpressed spring telescopic pins 14.

[0066] Step 2: Top polishing: The first electric cylinder slide 12 moves the moving seat 13 slowly horizontally, and the moving seat 13 drives the pushing seat 3 and the mounting seat 31 distributed in a "one" shape to move horizontally synchronously. During the movement, the electric push rod 23 pushes the movable platform 24 to move downward, causing the polishing disc 22 to contact the top surface of the injection mold. The rotating motor drives the rotating drum 25 to rotate. The rotating drum 25 is combined with the ring seat 29, the cross-distributed rotating pins, the sphere 26 and the hollow tube 27 to cause the turntable 28 to carry the polishing disc 22 to rotate, and combined with the second electric cylinder slide 32 to drive the moving platform 21 to move horizontally, so that the moving path of the polishing disc 22 completely covers the top surface of the injection mold and performs polishing.

[0067] Step 3: During the high-speed rotation of the turntable 28, the second piston block 213 in the multiple liquid storage chambers 212 inside moves under the action of the centrifugal force of the rotation, stretching the tension spring 219, pushing the polishing liquid in the liquid storage chamber 212 into the liquid outlet, and then entering the space between the polishing plate 22 and the injection mold surface through the corresponding triangular slit 214, and performing chemical mechanical polishing with the polishing plate 22;

[0068] Step 4: When the polishing surface is an inclined surface, the rotating drum 25 is combined with the ring seat 29, the cross-distributed rotating pins and the spheres 26 to promote the rotation of the turntable 28. The turntable 28 is deflected in a universal angle relative to the rotating drum 25, so that the polishing disc 22 can adapt to the surface of the injection mold autonomously, ensuring a larger polishing area and improving the polishing efficiency. It also avoids the separation gap between the polishing disc 22 and the injection mold surface, which would cause a large amount of polishing liquid to be discharged.

[0069] Step 5: During the horizontal movement of the moving base 13, the laser 3D scanner 4 is driven to move horizontally synchronously. The laser 3D scanner 4 collects data on the height difference of the injection mold surface and transmits the collected data to the controller in the control panel 5. The controller generates a dynamic compensation signal based on the collected data of different values, and accurately adjusts the extension and contraction amount of the electric push rod 23 in each area of ​​the polishing surface, so that the contact pressure of the polishing disc 22 on each part of the inclined surface is evenly distributed, thereby ensuring the surface accuracy after polishing;

[0070] Step 6: After the polishing liquid in the liquid storage chamber 212 is discharged, the guide block 217 on one side of the second piston block 213 contacts the corresponding guide rod 218 on the rotating rod 215, causing the rotating rod 215 to drive the blocking plate 216 to deflect. The corresponding opening on the blocking plate 216 is no longer connected to the liquid outlet. The blocking plate 216 blocks the liquid outlet, and the other opening is connected to the liquid inlet. At this time, the elastic force of the liquid pushing spring 211 pushes the first piston block 210 to move upward, and the polishing liquid temporarily stored in the rotating drum 25 is injected into the liquid storage chamber 212 through the hose 220, the hollow tube 27, the connecting tube 221, the liquid inlet and the corresponding opening;

[0071] The tensile force of the tension spring 219 causes the second piston block 213 to reset, filling the liquid storage chamber 212 with the temporarily stored polishing liquid until the guide block 217 on the other side of the second piston block 213 contacts the corresponding guide rod 218 on the rotating rod 215, causing the rotating rod 215 to drive the blocking disk 216 to reset and deflect in the opposite direction. The corresponding opening on the blocking disk 216 is connected to the liquid outlet again, and the blocking disk 216 blocks the liquid inlet, and the polishing liquid is continuously discharged in small quantities again, assisting the polishing disk 22 in high-quality polishing.

[0072] Step 7: Vertical side polishing: The moving seat 13 moves to one side of the material placement tray 11, and the second servo motor drives the screw 15 to rotate, and the screw 15 drives the push seat 3 to move away from the material placement tray 11. During the movement, the guide pin 16 moves in the spiral groove 34 on the rotating rod 33. Combined with the guidance of the guide pin 16 by the spiral groove 34, the rotating rod 33 is prompted to rotate multiple circles, and the engagement of the small bevel teeth 36 and the large bevel teeth 37 drives the rotating shaft to deflect 90°, resulting in a "∟" state between the mounting seat 31 and the pushing seat 3, so as to change the polishing surface direction of the polishing disc 22. The second electric cylinder slide 32 drives the moving table 21 to move up and down, and then repeats the polishing disc 22 movement process in the top polishing step;

[0073] After completing the surface polishing treatment on one side, the first servo motor drives the loading plate 11 to deflect, switches the vertical polishing surface of the injection mold, and drives the push seat 3 to move through the screw rod 15, combined with the movement of the guide pin 16 in the linear groove 35 on the rotating rod 33, so that the distances between different vertical polishing surfaces of the injection mold and the mounting seat 31 are equal, and the auxiliary polishing plate 22 is fully in contact with the surface of the injection mold.

[0074] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A mold surface polishing device suitable for injection mold manufacturing, comprising a base (1), and a material placement plate (11) located on the top of the base (1) for mold rotation, characterized in that: A polishing assembly (2) adapted to adjust the inclined surface of the mold is provided above the material placement tray (11); the top of the base (1) is connected to a moving seat (13) via a first electric cylinder slide (12); and a pushing seat (3) for adjusting the direction and position of the polishing assembly (2) is provided on the moving seat (13); The polishing assembly (2) comprises a movable platform (21) and a polishing disc (22); a laser three-dimensional scanner (4) for collecting data on the height difference of the mold surface is installed on one side of the bottom of the movable platform (21); a control panel (5) is installed on the top of the base (1); and a controller in the control panel (5) regulates the position of the polishing disc (22).

2. A mold surface polishing device suitable for injection mold manufacturing according to claim 1, characterized in that: The material placing tray (11) is rotatably mounted on the top of the base (1), and a plurality of spring telescopic pins (14) are fixedly mounted on the top of the material placing tray (11). The ends of the telescopic sections of the spring telescopic pins (14) can be moved into the interior of the material placing tray (11). A first servo motor for driving the material placing tray (11) to rotate is mounted on the base (1) via bolts.

3. A mold surface polishing device suitable for injection mold manufacturing according to claim 1, characterized in that: The first electric cylinder slide (12) is fixedly mounted on the top of the base (1), the movable seat (13) is mounted on the slide of the first electric cylinder slide (12), and the movable seat (13) is slidably connected to the push seat (3).

4. A mold surface polishing device suitable for injection mold manufacturing according to claim 3, characterized in that: A rotating shaft is rotatably connected to the inclined side wall of the pushing seat (3), and a mounting seat (31) is fixedly connected to the rotating shaft. A second electric cylinder slide (32) for driving the moving platform (21) is fixedly mounted on the mounting seat (31), and a rotating rod (33) for driving the rotating shaft is rotatably mounted on the pushing seat (3).

5. A mold surface polishing device suitable for injection mold manufacturing according to claim 4, characterized in that: A screw rod (15) threadedly connected to the pushing seat (3) is rotatably mounted on the movable seat (13), and a second servo motor for driving the screw rod (15) to rotate is fixedly mounted. A spiral groove (34) is provided on the rotating rod (33), and one side of the spiral groove (34) is connected to a linear groove (35). A guide pin (16) adapted to the spiral groove (34) is fixedly connected to the movable seat (13). Small bevel teeth (36) are fixedly connected to the rotating rod (33), and large bevel teeth (37) meshing with the small bevel teeth (36) are fixedly connected to the rotating shaft.

6. The mold surface polishing device suitable for injection mold manufacturing according to claim 1, characterized in that: A movable platform (24) is installed at the bottom of the movable platform (21) via an electric push rod (23), and a rotating motor is installed on the movable platform (24). A rotating drum (25) for temporarily storing polishing liquid is fixedly connected to the output shaft of the rotating motor. A sphere (26) is arranged inside the rotating drum (25), and the sphere (26) is fixedly connected to a turntable (28) via a hollow tube (27). The polishing disk (22) is detachably mounted on the turntable (28).

7. A mold surface polishing device suitable for injection mold manufacturing according to claim 6, characterized in that: A ring seat (29) is provided between the rotating cylinder (25) and the sphere (26), and rotating pins distributed in a cross are rotatably installed between the ring seat (29), the rotating cylinder (25) and the sphere (26). A first piston block (210) is sealingly and slidably connected inside the rotating cylinder (25), and a liquid pushing spring (211) is connected between the first piston block (210) and the sphere (26).

8. The mold surface polishing device suitable for injection mold manufacturing according to claim 7, characterized in that: The turntable (28) is provided with a plurality of liquid storage chambers (212), and the liquid storage chambers (212) are sealed and slidably connected to a second piston block (213). A liquid outlet penetrating the bottom of the turntable (28) is provided on a side of the liquid storage chamber (212) away from the hollow tube (27), and a triangular slit (214) is provided on the polishing disc (22) at a position corresponding to the liquid outlet.

9. The mold surface polishing device suitable for injection mold manufacturing according to claim 8, characterized in that: A liquid inlet penetrating the top of the rotating disk (28) is provided on one side of the liquid storage chamber (212), a rotating rod (215) is rotatably installed in the liquid storage chamber (212), and a blocking disk (216) is fixedly connected to the rotating rod (215) and is sealed and rotatably connected to the inner wall of one side of the liquid storage chamber (212), and the blocking disk (216) is provided with two groups of openings that are not simultaneously connected to the corresponding liquid inlets and liquid outlets.

10. The mold surface polishing device suitable for injection mold manufacturing according to claim 9, characterized in that: Guide blocks (217) are fixedly connected to both sides of the second piston block (213); two groups of guide rods (218) that cooperate with the corresponding guide blocks (217) are installed on the rotating rod (215); a tension spring (219) is fixedly connected between the second piston block (213) and the liquid storage chamber (212); a hose (220) is connected between the hollow tube (27) and the first piston block (210); and a connecting tube (221) is installed between the liquid inlet and the hollow tube (27).

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