A device for polishing injection molded parts

Abstract

The utility model provides a kind of injection molding parts polishing device, it is related to injection molding parts polishing technology, specifically discloses rack, one side of rack is equipped with first mount, first mount is equipped with the fixed clamping structure for clamping injection molding parts, the other side of rack is equipped with second mount, second mount is equipped with the dynamic clamping structure coaxial with fixed clamping structure;Fixed clamping structure and dynamic clamping structure between being equipped with transmission mechanism for transmission injection molding parts and make it with fixed clamping structure coaxial;The two sides of first mount are equipped with polishing structure for polishing injection molding parts, first mount is equipped with the driving structure for driving fixed clamping structure rotation, fixed clamping structure and dynamic clamping structure coaxial cooperation, the annular guide slot and support rod of combination transmission mechanism, ensure workpiece clamping coaxiality, eliminate eccentricity caused by rotation sway and polishing error.

Description

Technical Field

[0001] This utility model relates to the field of injection molding part grinding technology, and more specifically, to an injection molding part grinding device. Background Technology

[0002] After injection molding, the surface of the workpiece often has defects such as flash, burrs, or parting lines, which need to be improved by grinding to improve the appearance quality and dimensional accuracy. Especially for columnar and rotating injection molded parts (such as bottle caps and pipe fittings), the existing clamping mechanisms mostly use mechanical chucks or rigid ejector pins, which can easily lead to deformation or surface damage of thin-walled injection molded parts. Moreover, it is difficult to ensure the coaxiality of the workpiece clamping. Eccentric vibration during rotation can cause uneven grinding. Grinding on one side requires multiple adjustments of the clamping position, resulting in low processing efficiency. In addition, there are blind spots in grinding during the workpiece rotation, which can lead to problems with incomplete workpiece processing. Utility Model Content

[0003] The purpose of this utility model is to provide a grinding device for injection molded parts, which addresses the shortcomings of the existing technology and solves the problems mentioned in the background.

[0004] The technical solution of this utility model is implemented as follows:

[0005] The utility model provides a grinding device for injection molded parts, including a frame, a first mounting seat mounted on one side of the frame, the first mounting seat having a fixed clamping structure for clamping injection molded parts, a second mounting seat mounted on the other side of the frame, the second mounting seat having a movable clamping structure coaxial with the fixed clamping structure; a transmission mechanism for transmitting injection molded parts and making them coaxial with the fixed clamping structure is provided between the fixed clamping structure and the movable clamping structure; grinding structures for grinding injection molded parts are mounted on both sides of the first mounting seat, and a drive structure for driving the fixed clamping structure to rotate is provided on the first mounting seat.

[0006] In some technical solutions of this utility model, the fixed clamping structure includes a first clamping seat rotatably disposed on a first mounting seat, and a ring-shaped suction cup structure is installed on the side wall of the first clamping seat away from the first mounting seat.

[0007] In some technical solutions of this utility model, the movable clamping structure includes a positioning rod, a mounting hole coaxial with the first clamping seat is opened on the side wall of the second mounting seat, the positioning rod is slidably disposed in the mounting hole, a fixed seat is provided on the side wall of the positioning rod opposite to the first clamping seat, a second push rod is installed on the side wall of the second mounting seat away from the first mounting seat, and the telescopic end of the second push rod is connected to the positioning rod.

[0008] In some technical solutions of this utility model, the drive structure includes a first drive motor mounted on a first mounting base, a transmission shaft rotatably mounted on the first mounting base and connected to a first clamping seat, and the output end of the first drive motor being connected to the transmission shaft.

[0009] In some technical solutions of this utility model, a push rod is provided inside the transmission shaft, and a first push rod connected to the push rod is installed on the outer side wall of the first mounting seat.

[0010] In some technical solutions of this utility model, the transmission mechanism includes a transmission frame mounted on a frame, the transmission frame being perpendicular to the length direction of the frame, an installation chamber being provided inside the transmission frame, an annular guide groove being provided on the side wall of the transmission frame opposite to the fixed clamping structure, the guide groove communicating with the installation chamber, a plurality of support rods being slidably arranged in the guide groove, and an annular chain structure being rotatably arranged inside the installation chamber, with the plurality of support rods all connected to the chain structure.

[0011] In some technical solutions of this utility model, the grinding structure includes a grinding frame installed on the outer wall of the first mounting base, a grinding seat provided on the outer wall of the grinding frame, a grinding shaft rotatably provided on the side wall of the grinding seat, a grinding tool installed on the outer wall of the grinding shaft, and a second drive motor that is drively connected to the grinding shaft installed on the grinding seat.

[0012] In some technical solutions of this utility model, a slide rail structure connected to the grinding seat is installed on the outer side wall of the grinding frame, and a third push rod is installed on the outer side wall of the grinding frame, with the telescopic end of the third push rod connected to the grinding seat.

[0013] Compared with the prior art, this utility model has at least the following advantages or beneficial effects: the fixed clamping structure and the moving clamping structure are coaxially coupled, and combined with the annular guide groove and support rod of the transmission mechanism, the coaxiality of the workpiece clamping is ensured, eliminating rotational sway and grinding errors caused by eccentricity; the annular suction cup of the fixed clamping structure provides uniform negative pressure adsorption, avoiding hard contact damage to the workpiece surface, while increasing the adsorption area to prevent the workpiece from falling off during rotation; the annular guide groove of the transmission mechanism constrains the trajectory of the support rod, and the support rod lifts the workpiece to the clamping position under the drive of the chain structure, and combined with the push rod structure to adjust the height of the transmission frame, it again ensures that the center of the workpiece is coaxial with the fixed clamping structure; the grinding seat achieves radial movement through the slide rail and the third push rod, and the grinding depth can be adjusted in real time to adapt to different process requirements; the tilted grinding frame supports position adjustment to adapt to workpieces of different sizes. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0015] Figure 2 This is a schematic diagram of the structure of this utility model from another perspective.

[0016] Figure 3 This is a three-dimensional structural diagram of the fixed clamping structure and the movable clamping structure in this utility model.

[0017] Figure 4This is a schematic diagram of the combined structure of the drive shaft and the push rod in this utility model.

[0018] Figure 5 This is a schematic diagram of the installation structure of the support rod in this utility model.

[0019] Reference numerals: 1. Frame; 2. Support frame; 3. Transmission frame; 4. Second push rod; 5. Second mounting base; 6. First drive motor; 7. First mounting base; 8. First push rod; 9. First clamping base; 10. Grinding frame; 11. Guide groove; 12. Support rod; 13. Positioning rod; 14. Fixed base; 15. Injection molded part; 16. Grinding tool; 17. Grinding shaft; 18. Second drive motor; 19. Grinding base; 20. Slide rail structure; 21. Third push rod; 22. Suction cup structure; 23. Transmission shaft; 24. Top rod; 25. Chain structure. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without inventive effort are within the scope of protection of this invention.

[0022] Example

[0023] This utility model provides a grinding device for injection molded parts, such as Figures 1-5As shown, the system includes a frame 1. A first mounting base 7 is mounted on one side of the frame 1, and the first mounting base 7 is provided with a fixed clamping structure for clamping the injection molded part 15. A second mounting base 5 is mounted on the other side of the frame 1, and the second mounting base 5 is provided with a movable clamping structure coaxial with the fixed clamping structure. The fixed clamping structure and the movable clamping structure form a cooperative clamping mode. The fixed clamping structure provides a reference fixation for the injection molded part 15, and the movable clamping structure applies axial pressure to the injection molded part 15. Stable clamping is achieved with the cooperation of the fixed clamping structure and the movable clamping structure. A transmission mechanism is provided between the fixed clamping structure and the movable clamping structure for transmitting the injection molded part 15 and making it coaxial with the fixed clamping structure. The transmission mechanism ensures the coaxiality of the injection molded part 15 with the fixed clamping structure or the movable clamping structure, reduces clamping deviation, eliminates eccentricity, ensures rotational stability, and reduces grinding errors. Grinding structures for grinding the injection molded part 15 are mounted on both sides of the first mounting base 7, and a drive structure for driving the fixed clamping structure to rotate is provided on the first mounting base 7. The workpiece rotates in conjunction with the double-sided grinding tools to achieve uniform processing of the entire surface.

[0024] The working process of this structure is as follows: The transmission mechanism transports the injection molded part 15 between the fixed and moving clamping structures, and uses the transmission mechanism to ensure that it is coaxially positioned with the fixed clamping structure. The fixed clamping structure fixes one end of the injection molded part 15, and the moving clamping structure moves toward the fixed clamping structure and presses against the other end of the injection molded part 15. The drive structure drives the fixed clamping structure and the injection molded part 15 to rotate. The grinding structures on both sides grind its outer surface at the same time. The moving clamping structure resets, and the transmission mechanism removes the finished product.

[0025] Preferably, the first mounting base 7 and the second mounting base 5 are detachably connected to the frame 1 via two slide rail structures 20 mounted on the frame 1. The first mounting base 7 and the second mounting base 5 can move towards each other or away from each other along the extension direction of the frame 1 with the cooperation of the slide rail structures 20; and the first mounting base 7 and the second mounting base 5 can move independently.

[0026] In some technical solutions of this utility model, the fixed clamping structure includes a first clamping seat 9 rotatably disposed on the first mounting seat 7. A ring-shaped suction cup structure 22 is installed on the side wall of the first clamping seat 9 away from the first mounting seat 7. The ring-shaped suction cup structure 22 provides uniform negative pressure adsorption force for the injection molded part 15. The suction cup structure 22 enables the first clamping seat 9 to flexibly contact the injection molded part 15, avoiding damage to the injection molded part 15 by the fixed clamping structure and the moving clamping structure. Furthermore, the ring-shaped suction cup structure 22 increases the adsorption area, improves the clamping reliability, and prevents the injection molded part 15 from detaching from the clamping area of ​​the fixed clamping structure and the moving clamping structure during rotation.

[0027] In some technical solutions of this utility model, the movable clamping structure includes a positioning rod 13. A mounting hole coaxial with the first clamping seat 9 is opened on the side wall of the second mounting seat 5. The mounting hole is coaxial with the fixed clamping structure to ensure clamping concentricity. The positioning rod 13 is slidably disposed in the mounting hole. The friction between the positioning rod 13 and the mounting hole is small. The positioning rod 13 is an optical axis. A fixed seat 14 is provided on the side wall opposite to the first clamping seat 9. A second push rod 4 is installed on the side wall of the second mounting seat 5 away from the first mounting seat 7. The telescopic end of the second push rod 4 is connected to the positioning rod 13. The second push rod 4 is a cylinder push rod structure. Its linear movement can control the clamping force of the fixed seat 14 on the injection molded part 15 to prevent the injection molded part 15 from being deformed by pressure. When the second push rod 4 pushes the positioning rod 13 to slide along the mounting hole, the fixed seat 14 presses against the injection molded part 15 and moves towards the fixed clamping structure under the guidance of the transmission mechanism, thereby positioning and fixing the injection molded part 15 to be processed under the combined action of the moving clamping structure and the fixed clamping structure.

[0028] In some technical solutions of this utility model, the drive structure includes a first drive motor 6 mounted on a first mounting base 7, a transmission shaft 23 rotatably mounted on the first mounting base 7 and connected to a first clamping seat 9, and the output end of the first drive motor 6 is connected to the transmission shaft 23 via a belt structure. This allows the injection molded part 15 to rotate and cooperate with the double-sided grinding tools to achieve uniform processing of the entire surface and improve processing efficiency.

[0029] In some technical solutions of this utility model, a push rod 24 is inserted inside the drive shaft 23, and a first push rod 8 connected to the push rod 24 is installed on the outer wall of the first mounting base 7. The push rod 24 and the drive shaft 23 are coaxially nested, independently controlling the demolding action. The first push rod 8 provides a stable ejection force, preventing the finished product from sticking. The coaxial design of the drive shaft 23 and the push rod 24 does not occupy additional space. Furthermore, when the first push rod 8 pushes the push rod 24 to position and fix the injection molded part 15 to be processed under the combined action of the moving clamping structure and the fixed clamping structure, it increases the additional clamping force.

[0030] In some technical solutions of this utility model, the transmission mechanism includes a transmission frame 3 mounted on a frame 1. The transmission frame 3 is perpendicular to the length direction of the frame 1. An installation chamber is formed inside the transmission frame 3. An annular guide groove 11 is formed on the side wall of the transmission frame 3 opposite to the fixed clamping structure. The guide groove 11 communicates with the installation chamber. A plurality of support rods 12 are slidably arranged in the guide groove 11. The annular guide groove 11 constrains the trajectory of the support rods 12 to ensure that the workpiece is coaxial with the fixed clamping structure. An annular chain structure 25 is rotatably arranged inside the installation chamber. The plurality of support rods 12 are all connected to the chain structure 25. The chain structure 25 drives the support rods 12 to move along the guide groove 11, lifting the injection molded part 15 to the clamping position.

[0031] In actual use, the injection molded part 15 is placed between any two adjacent support rods 12, at which time the injection molded part 15 is in a suspended state.

[0032] Preferably, the support rod 12 is rotatably mounted on the outer wall of the chain structure 25.

[0033] Preferably, two gears that are rotatably connected to the chain structure 25 are provided in the mounting chamber, and a servo motor that is rotatably connected to one of the gears is installed in the mounting chamber.

[0034] A push rod structure connected to the transfer frame 3 is installed on the frame 1. The push rod structure is installed on the support frame 2. Its main function is to adjust the horizontal height of the transfer frame 3, thereby changing the center height of the workpiece to be processed, which is located on any two support rods 12, and lifting the injection molded part 15 to the clamping height to ensure that the injection molded part 15 is coaxial with the fixed clamping structure.

[0035] In some technical solutions of this utility model, the grinding structure includes a grinding frame 10 mounted on the outer wall of a first mounting base 7. The grinding frame 10 is obliquely mounted on the outer wall of the first mounting base. A grinding seat 19 is provided on the outer wall of the grinding frame 10. A grinding shaft 17 is rotatably mounted on the side wall of the grinding seat 19. A grinding tool 16 is mounted on the outer wall of the grinding shaft 17. A second drive motor 18, which is connected to the grinding shaft 17, is mounted on the grinding seat 19. The second drive motor 18 drives the grinding shaft 17 and the tool to rotate. The two grinding structures are symmetrically arranged to achieve synchronous and efficient grinding.

[0036] In some technical solutions of this utility model, a slide rail structure 20 connected to the grinding seat 19 is installed on the outer wall of the grinding frame 10. The slide rail structure 20 eliminates the positional deviation when the grinding seat 19 moves, ensuring uniform grinding pressure. A third push rod 21 is installed on the outer wall of the grinding frame 10, and the telescopic end of the third push rod 21 is connected to the grinding seat 19. As the third push rod 21 pushes the grinding seat 19 along the slide rail towards or away from the outer wall of the injection molded part 15, the grinding depth can be adjusted in real time to adapt to different process requirements. By changing the relative position of the grinding seat 19 on the grinding frame 10, injection molded parts 15 of different sizes can be adapted, improving the adaptability of this structure.

[0037] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A grinding device for injection molded parts, characterized in that, The system includes a frame (1), on one side of which a first mounting base (7) is installed. The first mounting base (7) is provided with a fixed clamping structure for clamping injection molded parts (15). On the other side of the frame (1), a second mounting base (5) is installed. The second mounting base (5) is provided with a movable clamping structure coaxial with the fixed clamping structure. A transmission mechanism for transmitting injection molded parts (15) and making them coaxial with the fixed clamping structure is provided between the fixed clamping structure and the movable clamping structure. Grinding structures for grinding injection molded parts (15) are installed on both sides of the first mounting base (7). The first mounting base (7) is provided with a driving structure for driving the fixed clamping structure to rotate.

2. The injection molding part grinding device according to claim 1, characterized in that, The fixed clamping structure includes a first clamping seat (9) rotatably disposed on the first mounting seat (7), and a ring-shaped suction cup structure (22) is installed on the side wall of the first clamping seat (9) away from the first mounting seat (7).

3. The injection molding part grinding device according to claim 2, characterized in that, The movable clamping structure includes a positioning rod (13). The second mounting seat (5) has a mounting hole coaxial with the first clamping seat (9) on its side wall. The positioning rod (13) is slidably disposed in the mounting hole. The positioning rod (13) has a fixed seat (14) on its side wall opposite to the first clamping seat (9). The second mounting seat (5) has a second push rod (4) mounted on its side wall away from the first mounting seat (7). The telescopic end of the second push rod (4) is connected to the positioning rod (13).

4. The injection molding part grinding device according to claim 2, characterized in that, The drive structure includes a first drive motor (6) mounted on the first mounting base (7), and a transmission shaft (23) rotatably mounted on the first mounting base (7) and connected to the first clamping base (9). The output end of the first drive motor (6) is connected to the transmission shaft (23) in a transmission connection.

5. The injection molding part grinding device according to claim 4, characterized in that, A push rod (24) is inserted inside the drive shaft (23), and a first push rod connected to the push rod (24) is installed on the outer side wall of the first mounting base (7).

6. The injection molding part grinding device according to claim 1, characterized in that, The transmission mechanism includes a transmission frame (3) mounted on the frame (1). The transmission frame (3) is perpendicular to the length direction of the frame (1). An installation chamber is provided inside the transmission frame (3). An annular guide groove (11) is provided on the side wall of the transmission frame (3) opposite to the fixed clamping structure. The guide groove (11) is connected to the installation chamber. Several support rods (12) are slidably provided inside the guide groove (11). An annular chain structure (25) is rotatably provided inside the installation chamber. The several support rods (12) are all connected to the chain structure (25).

7. The injection molding part grinding device according to claim 1, characterized in that, The polishing structure includes a polishing frame (10) mounted on the outer wall of the first mounting base (7), a polishing seat (19) provided on the outer wall of the polishing frame (10), a polishing shaft (17) rotatably mounted on the side wall of the polishing seat (19), a polishing tool (16) mounted on the outer wall of the polishing shaft (17), and a second drive motor (18) connected to the polishing shaft (17) in a transmission connection on the polishing seat (19).

8. The injection molding part grinding device according to claim 7, characterized in that, The outer side wall of the grinding frame (10) is equipped with a slide rail structure (20) connected to the grinding seat (19), and a third push rod (21) is installed on the outer side wall of the grinding frame (10). The telescopic end of the third push rod (21) is connected to the grinding seat (19).

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