A small surface grinder for injection molding parts

Abstract

This utility model discloses a small surface grinder for injection molding parts, relating to the field of injection molding parts processing technology. The utility model includes a processing table, with a rotating shaft rotatably connected to its upper surface. A mounting block is fixedly sleeved on the outer surface of the rotating shaft. Multiple connecting blocks are fixedly connected to the outer surface of the mounting block. A sliding rod is rotatably sleeved on the connecting block via bearings. A grinding disc is mounted on the sliding rod, and a mounting mechanism is provided on the upper side of the sliding rod. This utility model allows a first connecting column to be connected to grinding discs of different grit sizes by rotating a handle and sliding the sliding blocks up and down. This enables the first connecting column to rotate and grind with different grit grinding discs, making the changing operation simple, quick, labor-saving, and flexible, thereby improving the efficiency of changing different grit grinding discs and increasing the practicality of the small surface grinder for injection molding parts processing.

Description

Technical Field

[0001] This utility model belongs to the field of injection molding processing technology, and specifically relates to a small surface grinder for injection molding processing. Background Technology

[0002] Injection molding is a method of shaping industrial products. Products are typically manufactured using rubber or plastic injection molding. Injection molding can be further divided into injection molding and die casting. After injection molding, the product surface may have various defects, such as burrs, flash, weld lines, flow marks, or surface roughness. These defects usually require post-processing, and polishing is one such method.

[0003] If the injection molded part has obvious defects such as parting lines, burrs, ejector pin marks or flow marks, it is necessary to first use coarse grinding to quickly remove larger defects, and then use fine grinding to gradually refine the surface and reduce sand marks, in order to prepare for subsequent polishing or spraying. In some cases, fine grinding is required to meet the requirements.

[0004] Coarse grinding, fine grinding, and fine grinding all require grinding wheels of different grit sizes. This means that different grinding wheels need to be changed during the grinding of injection molded parts. Not only do different grinding wheels need to be searched for, but existing grinding wheels are usually fixed to the grinding equipment with bolts, which makes it impossible to quickly disassemble and replace the grinding wheels, thus reducing the practicality of the grinding equipment. Utility Model Content

[0005] For coarse grinding, fine grinding, and precision grinding, different grit sizes of grinding wheels are required. This necessitates changing grinding wheels of different grit sizes during the grinding of injection molded parts. Not only is it necessary to search for different grinding wheels during this process, but existing grinding wheels are typically bolted to the grinding equipment, which prevents quick disassembly and replacement, thus reducing the practicality of the grinding equipment. This invention proposes a small surface grinder for injection molded parts processing to overcome the aforementioned technical problems in existing related technologies.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0007] This utility model is a small surface grinder for injection molding parts processing, including a processing table, a rotating shaft rotatably connected to the upper surface of the processing table, a mounting block fixedly sleeved on the outer surface of the rotating shaft, a plurality of connecting blocks fixedly connected to the outer surface of the mounting block, a sliding rod rotatably sleeved on the connecting block through a bearing, and a grinding disc provided on the sliding rod;

[0008] An installation mechanism is provided on the upper side of the sliding rod, and the installation mechanism is used to install and fix the grinding disc on the sliding rod;

[0009] A connecting mechanism is provided on the lower side of the sliding rod, and a driving mechanism is provided on the processing table. The connecting mechanism connects the driving mechanism with the sliding rod, so that when the driving mechanism is activated, it can drive the sliding rod to rotate, thereby driving the grinding disc, which is fixed to it, to rotate and perform grinding work on the injection molded part.

[0010] A protective mechanism is fixedly installed on the processing table, which covers the grinding disc and protects it from dust.

[0011] Furthermore, the driving mechanism includes a motor, which is fixedly mounted on the lower surface of the processing table. A rotating rod is fixedly mounted on the rotation output shaft of the motor. The upper end of the rotating rod rotatably extends through the upper surface of the processing table. A first connecting post is fixedly connected to the upper end of the rotating rod. The first connecting post is hexagonal prism in shape.

[0012] Furthermore, the protective mechanism includes three support frames, which are fixedly connected to the upper surface of the processing table. A protective cover is fixedly connected to the upper end of the three support frames. The upper end of the rotating shaft rotatably extends through the upper surface of the protective cover, and the grinding disc is located inside the protective cover.

[0013] Furthermore, the connecting mechanism includes a sliding block, a limiting groove is formed in the sliding block, a handle is fixedly installed at the upper end of the rotating shaft, the lower end of the sliding rod slides through the limiting groove, and a limiting slider is fixedly connected to the lower end of the sliding rod.

[0014] Furthermore, the connecting mechanism also includes a mounting spring, which is fixedly connected between the bottom wall of the limiting slider and the limiting groove. The limiting slider is also hexagonal prism in shape and is slidably connected to the limiting groove. A positioning groove is provided on the lower surface of the sliding block, and the positioning groove is slidably connected to the first connecting post.

[0015] Furthermore, the mounting mechanism includes a mounting base, which is fixedly connected to the upper end of the sliding rod. A support block is fixedly connected to the lower surface of the grinding disc. The support block is slidably connected to the mounting base. A fixing groove extending from the right side surface of the support block is provided on the left side surface. Two positioning blocks are slidably sleeved on the mounting base.

[0016] Furthermore, the mounting mechanism also includes two positioning plates, which are fixedly connected to the opposite outer surfaces of the two positioning blocks. Both positioning blocks slide through the mounting base. The adjacent sides of the two positioning blocks are inclined surfaces, and the two positioning blocks are mirror images of each other. The fixing groove is slidably connected to the positioning blocks, and two positioning springs are fixedly connected between the positioning plates and the mounting base.

[0017] This utility model has the following beneficial effects:

[0018] 1. This utility model allows the first connecting column to be connected to grinding discs of different grit sizes by rotating the handle and sliding the upper and lower sliding blocks. This enables the first connecting column to rotate and grind with different grit sizes of grinding discs. The replacement operation is simple, quick, labor-saving, and flexible, thereby improving the efficiency of changing grinding discs of different grit sizes and increasing the practicality of small surface grinders for injection molding.

[0019] 2. When the grinding disc is not in use, the grinding disc can be rotated into the protective cover. The protective cover has the function of preventing dust from the grinding disc. When any grinding disc is in use, the other unused grinding discs are located inside the protective cover. As a result, the dust from grinding the injection molded parts falls onto the other unused grinding discs, thereby increasing the practicality and flexibility of the small surface grinder for processing injection molded parts.

[0020] 3. The positioning block of this utility model slides into the fixing groove to fix the support block and the mounting base, thereby installing the grinding disc on the sliding rod. The installation is convenient, labor-saving, quick and flexible, making the installation of the grinding disc faster and less labor-intensive.

[0021] 4. When disassembling the grinding disc, this utility model only requires pulling out the two positioning plates to move them away from each other. The two positioning plates simultaneously apply tension to the positioning springs, causing the positioning springs to stretch and deform. The two positioning plates simultaneously drive the two positioning blocks to move out of the fixing grooves in opposite directions. At this time, the support block can slide upward out of the mounting base, thereby removing the grinding disc from the mounting base. Disassembly is convenient and flexible, and it is also convenient to replace the grinding disc after it wears out.

[0022] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the utility model embodiments, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0025] Figure 2 This is a schematic diagram of the grinding disc structure of this utility model;

[0026] Figure 3This is a schematic diagram of the protective cover structure of this utility model;

[0027] Figure 4 This is a vertical cross-sectional view of the sliding block of this utility model;

[0028] Figure 5 For the present utility model Figure 4 Enlarged view of point A;

[0029] Figure 6 This is a vertical cross-sectional view of the mounting base of this utility model.

[0030] The attached diagram lists the components represented by each number as follows:

[0031] 1. Processing table; 2. Support frame; 3. Protective cover; 4. Motor; 5. Rotating rod; 6. First connecting column; 7. Rotating shaft; 8. Handle; 9. Mounting block; 10. Connecting block; 11. Sliding rod; 12. Sliding block; 13. Grinding disc; 14. Fixing groove; 15. Mounting base; 16. Positioning block; 17. Positioning spring; 18. Positioning plate; 19. Limiting slider; 20. Limiting groove; 21. Mounting spring; 22. Positioning groove; 23. Support block. Detailed Implementation

[0032] The technical solutions of the utility model embodiments will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the utility model, and not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the utility model.

[0033] In the description of this utility model, it should be understood that the terms "opening", "upper", "lower", "top", "middle", "inner", etc., which indicate orientation or positional relationship, are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the utility model.

[0034] Please see Figures 1-6 As shown, this utility model is a small surface grinder for injection molding parts processing, including a processing table 1. A rotating shaft 7 is rotatably connected to the upper surface of the processing table 1. An mounting block 9 is fixedly sleeved on the outer surface of the rotating shaft 7. A plurality of connecting blocks 10 are fixedly connected to the outer surface of the mounting block 9. A sliding rod 11 is rotatably sleeved on the connecting block 10 through a bearing. A grinding disc 13 is provided on the sliding rod 11.

[0035] An installation mechanism is provided on the upper side of the sliding rod 11, and the installation mechanism is used to install and fix the grinding disc 13 on the sliding rod 11;

[0036] A connecting mechanism is provided on the lower side of the sliding rod 11, and a driving mechanism is provided on the processing table 1. The connecting mechanism connects the driving mechanism with the sliding rod 11, so that when the driving mechanism is activated, it can drive the sliding rod 11 to rotate, thereby driving the grinding disc 13, which is fixed thereto, to rotate and perform grinding work on the injection molded part.

[0037] A protective mechanism is fixedly installed on the processing table 1. The protective mechanism covers the grinding disc 13 and has a dustproof function for the grinding disc 13.

[0038] In one embodiment, the driving mechanism includes a motor 4, which is fixedly mounted on the lower surface of the processing table 1. A rotating rod 5 is fixedly mounted on the rotation output shaft of the motor 4. The upper end of the rotating rod 5 rotatably extends through the upper surface of the processing table 1. A first connecting post 6 is fixedly connected to the upper end of the rotating rod 5. The first connecting post 6 is in the shape of a hexagonal prism.

[0039] In addition, in specific applications, the starting motor 4 synchronously drives the rotating rod 5 to rotate, and the rotation of the rotating rod 5 synchronously drives the first connecting column 6 to rotate.

[0040] In one embodiment, the protective mechanism includes three support frames 2, which are fixedly connected to the upper surface of the processing table 1. The upper ends of the three support frames 2 are fixedly connected to protective covers 3. The upper end of the rotating shaft 7 rotatably passes through the upper surface of the protective cover 3, and the grinding disc 13 is located inside the protective cover 3.

[0041] In addition, in practical applications, when the grinding disc 13 is not in use, it can be rotated into the protective cover 3. The protective cover 3 has the function of preventing dust from the grinding disc 13. When any grinding disc 13 is in use, the other unused grinding discs 13 are located inside the protective cover 3, so that the dust from grinding the injection molded parts falls onto the other unused grinding discs 13, thereby increasing the practicality and flexibility of the small surface grinder for processing injection molded parts.

[0042] In one embodiment, the connecting mechanism includes a sliding block 12 with a limiting groove 20 inside. A handle 8 is fixedly installed at the upper end of the rotating shaft 7. The lower end of the sliding rod 11 slides through the limiting groove 20. A limiting slider 19 is fixedly connected to the lower end of the sliding rod 11. The limiting slider 19 is also hexagonal prism in shape and is slidably connected to the limiting groove 20. A mounting spring 21 is fixedly connected between the limiting slider 19 and the bottom wall of the limiting groove 20. A positioning groove 22 is provided on the lower surface of the sliding block 12 and is slidably connected to the first connecting post 6.

[0043] Furthermore, in specific applications, in this solution, the multiple grinding discs 13 have different grinding grits, and the grinding grits of the multiple grinding discs 13 are arranged in sequence. Then, the handle 8 is rotated to drive the rotating shaft 7 to rotate. The rotating shaft 7 synchronously drives the mounting block 9 and the multiple connecting blocks 10 fixed on the mounting block 9 to rotate, thereby driving the grinding discs 13 on the connecting blocks 10 to rotate around the rotating shaft 7. When the grinding discs 13 rotate to the point where they are displaced out of the protective cover 3, the sliding block 12 is pulled upward to move the sliding block 12 upward. The upward movement presses the mounting spring 21 between the bottom wall of the limiting groove 20 and the limiting slider 19, causing the mounting spring 21 to deform under pressure. Then, the handle 8 is rotated to move the sliding block 12 directly above the first connecting post 6, releasing the sliding block 12 and releasing the compressive stress of the mounting spring 21. This pushes the sliding block 12 downward to reset it. During the downward movement of the sliding block 12, the first connecting post 6 slides into the positioning groove 22. Because both the first connecting post 6 and the limiting slider 19 are hexagonal prisms, the sliding block 12... The positioning block 16 rotates synchronously with the rotation of the first connecting column 6. As mentioned above, after starting the motor 4, it synchronously drives the first connecting column 6 and the limiting slider 19 to rotate. The rotation of the limiting slider 19 synchronously drives the sliding rod 11 to rotate. The rotation of the sliding rod 11 drives the mounting base 15 fixed at its upper end to rotate, thereby driving the grinding disc 13 fixedly mounted on the mounting base 15 to rotate. The grinding disc 13 rotates to grind the injection molded part. In this solution, the rotation of the first connecting column 6 can drive the grinding disc 13 currently connected to it to rotate. By pushing the sliding block 12 up and down, different sliding blocks 12 can be slidably connected to the first connecting column 6. Therefore, by rotating the handle 8 and sliding the sliding block 12 up and down, the first connecting column 6 can be connected to grinding discs 13 of different grit sizes respectively, so that the first connecting column 6 can be rotated and ground by changing the grinding disc 13 of different grit sizes. The replacement operation is simple and quick, labor-saving and flexible, thereby improving the efficiency of changing grinding discs 13 of different grit sizes, thereby increasing the practicality of the small surface grinder for injection molded part processing.

[0044] In one embodiment, the installation mechanism includes a mounting base 15, which is fixedly connected to the upper end of the sliding rod 11. A support block 23 is fixedly connected to the lower surface of the grinding disc 13. The support block 23 is slidably connected to the mounting base 15. A fixing groove 14 extending from the right side surface of the support block 23 is provided on the left side surface. Two positioning blocks 16 are slidably sleeved on the mounting base 15.

[0045] The mounting mechanism also includes two positioning plates 18, which are fixedly connected to the opposite outer surfaces of the two positioning blocks 16. Both positioning blocks 16 slide through the mounting base 15. The adjacent sides of the two positioning blocks 16 are inclined surfaces. The two positioning blocks 16 are mirror images of each other. The fixing groove 14 is slidably connected to the positioning blocks 16. Two positioning springs 17 are fixedly connected between the positioning plates 18 and the mounting base 15.

[0046] Furthermore, in practical applications, when installing the grinding disc 13, it is only necessary to slide the support block 23 downward into the mounting base 15. During the downward sliding process, the lower surface of the support block 23 contacts the inclined surface of the positioning block 16, and the support block 23 and the positioning block 16 are in inclined sliding connection. At this time, the support block 23 provides a pushing force to the positioning block 16 during its downward movement, pushing the two positioning blocks 16 to move in opposite directions. The opposite movement of the positioning blocks 16 simultaneously causes the two positioning plates 18 to move away from each other, thereby stretching the positioning spring 17 by the positioning plate 18, causing the positioning spring 17 to undergo tensile deformation. When the lower surface of the support block 23 contacts the bottom wall of the mounting base 15, the positioning block 16 and the fixing groove 14 are at the same height, which releases the compressive stress of the positioning spring 17, pushing the positioning plate 18 and the positioning block 16 to reset, thereby pushing the two positioning blocks 16 to slide into the fixing groove 14. The positioning blocks 16 slide into the fixing groove 14 to fix the support block 23 and the mounting base 15, thereby installing the grinding disc 13 on the sliding rod 11. The installation is convenient, labor-saving, quick and flexible, making the installation of the grinding disc 13 faster and less labor-intensive.

[0047] When disassembling the grinding disc 13, simply pull out the two positioning plates 18 to move them away from each other. The two positioning plates 18 simultaneously apply tension to the positioning spring 17, causing the positioning spring 17 to stretch and deform. The two positioning plates 18 simultaneously drive the two positioning blocks 16 to move out of the fixing groove 14 in opposite directions. At this time, the support block 23 can slide upward out of the mounting base 15, thereby removing the grinding disc 13 from the mounting base 15. Disassembly is convenient and flexible, and it is easy to replace the grinding disc 13 after it wears out.

[0048] Through the above technical solution, 1. by rotating the handle 8 and the sliding block 12, the first connecting post 6 can be connected to the grinding disc 13 of different grit sizes, so that the first connecting post 6 can be rotated and ground by changing the grinding disc 13 of different grit sizes. The replacement operation is simple and quick, labor-saving and flexible, thereby improving the efficiency of changing the grinding disc 13 of different grit sizes, thus increasing the practicality of the small surface grinder for injection molding parts processing.

[0049] 2. When the grinding disc 13 is not in use, it can be rotated into the protective cover 3. The protective cover 3 has the function of preventing dust from the grinding disc 13. When any grinding disc 13 is in use, the other unused grinding discs 13 are located inside the protective cover 3. As a result, the dust from grinding the injection molded parts falls onto the other unused grinding discs 13, thereby increasing the practicality and flexibility of the small surface grinder for processing injection molded parts.

[0050] 3. The positioning block 16 is slid into the fixing groove 14 to fix the support block 23 and the mounting base 15, thereby installing the grinding disc 13 on the sliding rod 11. The installation is convenient, labor-saving and quick and flexible, making the installation of the grinding disc 13 faster and less labor-intensive.

[0051] 4. When disassembling the grinding disc 13, simply pull out the two positioning plates 18 to move them away from each other. The two positioning plates 18 simultaneously apply tension to the positioning spring 17, causing the positioning spring 17 to stretch and deform. The two positioning plates 18 simultaneously drive the two positioning blocks 16 to move out of the fixing groove 14 in opposite directions. At this time, the support block 23 can slide upward out of the mounting base 15, thereby removing the grinding disc 13 from the mounting base 15. Disassembly is convenient and flexible, and it is easy to replace the grinding disc 13 after it wears out.

[0052] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0053] The preferred embodiments of the utility model disclosed above are merely illustrative of the utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the utility model, thereby enabling those skilled in the art to better understand and utilize it. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A small surface grinder for processing injection molded parts, comprising a processing table (1), characterized in that, The upper surface of the processing table (1) is rotatably connected to a rotating shaft (7), and an installation block (9) is fixedly sleeved on the outer surface of the rotating shaft (7). Multiple connecting blocks (10) are fixedly connected to the outer surface of the installation block (9). A sliding rod (11) is rotatably sleeved on the connecting block (10) through a bearing. A grinding disc (13) is provided on the sliding rod (11). An installation mechanism is provided on the upper side of the sliding rod (11), and the installation mechanism is used to install and fix the grinding disc (13) on the sliding rod (11); A connecting mechanism is provided on the lower side of the sliding rod (11), and a driving mechanism is provided on the processing table (1). The connecting mechanism connects the driving mechanism with the sliding rod (11), so that when the driving mechanism is started, it can drive the sliding rod (11) to rotate, thereby driving the grinding disc (13) which is fixed thereto to rotate and perform grinding work on the injection molded part. A protective mechanism is fixedly installed on the processing table (1). The protective mechanism covers the grinding disc (13) and has a dustproof function for the grinding disc (13).

2. The small surface grinder for injection molding parts according to claim 1, characterized in that, The driving mechanism includes a motor (4), which is fixedly installed on the lower surface of the processing table (1). A rotating rod (5) is fixedly installed on the rotating output shaft of the motor (4). The upper end of the rotating rod (5) rotates through the upper surface of the processing table (1). A first connecting column (6) is fixedly connected to the upper end of the rotating rod (5). The first connecting column (6) is in the shape of a hexagonal prism.

3. A small surface grinder for injection molding parts according to claim 1, characterized in that, The protective mechanism includes three support frames (2), which are fixedly connected to the upper surface of the processing table (1). The upper ends of the three support frames (2) are fixedly connected to protective covers (3). The upper end of the rotating shaft (7) rotates through the upper surface of the protective cover (3). The grinding disc (13) is located inside the protective cover (3).

4. A small surface grinder for injection molding parts according to claim 1, characterized in that, The connecting mechanism includes a sliding block (12), a limiting groove (20) is provided in the sliding block (12), a handle (8) is fixedly installed at the upper end of the rotating shaft (7), the lower end of the sliding rod (11) slides through the limiting groove (20), and the lower end of the sliding rod (11) is fixedly connected to a limiting slider (19).

5. A small surface grinder for injection molding parts according to claim 4, characterized in that, The connecting mechanism also includes a mounting spring (21), which is fixedly connected between the bottom wall of the limiting slider (19) and the limiting groove (20). The limiting slider (19) is also hexagonal prism in shape. The limiting slider (19) is slidably connected to the limiting groove (20). The lower surface of the sliding block (12) is provided with a positioning groove (22), which is slidably connected to the first connecting post (6).

6. A small surface grinder for injection molding parts according to claim 5, characterized in that, The installation mechanism includes a mounting base (15), which is fixedly connected to the upper end of the sliding rod (11). A support block (23) is fixedly connected to the lower surface of the grinding disc (13). The support block (23) is slidably connected to the mounting base (15). A fixing groove (14) extending from the right side surface of the support block (23) is provided on the left side surface. Two positioning blocks (16) are slidably sleeved on the mounting base (15).

7. A small surface grinder for injection molding parts according to claim 6, characterized in that, The mounting mechanism also includes two positioning plates (18), which are fixedly connected to the opposite outer surfaces of the two positioning blocks (16). The two positioning blocks (16) slide through the mounting base (15). The two adjacent sides of the two positioning blocks (16) are inclined surfaces. The two positioning blocks (16) are mirror images of each other. The fixing groove (14) is slidably connected to the positioning blocks (16). Two positioning springs (17) are fixedly connected between the positioning plates (18) and the mounting base (15).

Images