Cylindrical injection molding part side wall grinding device

Abstract

The utility model discloses a cylindrical injection molding part side wall polishing device which comprises a rack, a platen is fixedly installed on the top of the rack, a feeding and discharging device and a polishing device are fixedly installed on the platen, and the feeding and discharging device is located on the rear side of the platen and used for feeding and discharging injection molding parts. The grinding device is used for receiving the injection molding parts conveyed by the feeding and discharging device and grinding the side walls of the injection molding parts; by means of the device, the side wall of the cylindrical injection molding part can be ground and processed, meanwhile, feeding and discharging are convenient, the grinding position and the feeding and discharging position are not located at the same position, and damage of dust generated by grinding to operators is reduced; and the feeding and discharging positions and the polishing position are not located at the same position, so that the operation safety is improved.

Description

Technical Field

[0001] The utility model relates to the field of injection molding processing, in particular to a side wall grinding device for cylindrical injection moldings. Background Art

[0002] Injection molding, also known as injection molding, is a molding method that combines injection and molding. The advantages of the injection molding method are fast production speed, high efficiency, automated operation, a wide variety of colors, shapes from simple to complex, sizes from large to small, and precise product size. The product is easy to update and can be made into parts with complex shapes. Injection molding is suitable for mass production and molding and processing fields such as products with complex shapes; burrs will appear on the surface of injection molded parts during molding.

[0003] For example, a patent with authorization announcement number CN220575472U discloses an injection molded part deburring device, which relates to the field of deburring technology and includes a workbench, a closing mechanism is arranged on the outside of the workbench, and the closing mechanism includes a support frame, a threaded tube and two sealing boxes. The inner bottom wall of the support frame is rotatably connected to a threaded rod, and the threaded tube is threadedly connected to the threaded rod. The outer surface of the threaded tube is fixedly connected to a lifting plate, and the outer surface of the lifting plate is hinged to two connecting rods through a pin shaft.

[0004] The above patent clamps the workpiece by a clamping mechanism, and then grinds the end face of the workpiece by a grinding mechanism. However, the disadvantage of the above patent is that the above patent is only applicable to grinding relatively flat end faces, and cannot perform good grinding on the curved side walls of a cylinder.

[0005] Therefore, it is necessary for us to improve such a structure to overcome the above-mentioned defects. Utility Model Content

[0006] The purpose of the utility model is to provide a cylindrical injection molded part side wall grinding device to solve the problems raised in the above background technology.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A cylindrical injection molded part side wall grinding device comprises a frame, a table is fixedly mounted on the top of the frame, a loading and unloading device and a grinding device are fixedly mounted on the table, wherein the loading and unloading device is located at the rear side of the table for loading and unloading the injection molded part, and the grinding device is used to receive the injection molded part transported by the loading and unloading device and grind the side wall of the injection molded part;

[0009] The loading and unloading device includes a loading and unloading mounting plate, a first synchronous belt device and a vacuum suction cup; the loading and unloading mounting plate is arranged along the left and right directions, and two mounting brackets are fixedly installed on the rear side of the loading and unloading mounting plate, and the bottom of the mounting bracket is fixedly connected to the top of the table plate, and at least two loading and unloading slide rails are fixedly installed at the front end of the loading and unloading mounting plate, and the loading and unloading slide rails are arranged along the length direction of the loading and unloading mounting plate, and the front end of the loading and unloading slide rails is slidably connected to the loading and unloading sliding seat through a slider; at the same time, a group of first synchronous belt devices is also arranged between the two loading and unloading slide rails to drive the loading and unloading sliding seat to move; a loading and unloading cylinder is also fixedly installed at the front end of the loading and unloading sliding seat, and a vacuum suction cup bracket is fixedly installed on the output end of the loading and unloading cylinder, and at least four vacuum suction cups are fixedly installed on the vacuum suction cup bracket;

[0010] The grinding device includes a grinding mounting table, a grinding fixture and a grinding drive motor, the grinding fixture includes a fixed round table, the fixed round table is cylindrical as a whole, the bottom of the fixed round table is fixedly connected to a mounting shaft, the mounting shaft is rotatably connected to a bearing seat through a bearing, and the bearing seat is fixedly mounted on the top of the grinding mounting table, the bottom of the mounting shaft passes through the grinding mounting table and is fixedly mounted with a second driven pulley; the grinding drive motor is fixedly mounted on the bottom of the grinding mounting table, wherein a second driving pulley is fixedly mounted on the output shaft of the grinding drive motor, and the second driving pulley is connected to the second driven pulley through a second synchronous belt drive;

[0011] The grinding device also includes a grinding knife, and the side of the grinding knife close to the fixed truncated table is arranged in an inwardly concave arc shape, and the inner side of the inwardly concave arc portion is arranged roughly, so that the grinding knife arranged in an arc shape can fit the arc-shaped side wall of the cylindrical injection molded part when the grinding knife contacts the cylindrical injection molded part; the grinding knife is fixedly installed on the front right side of the knife seat, and the knife seat is slidably arranged on the first grinding slide rail through a slider, and the first grinding slide rail is fixedly installed on the top rear side of the grinding mounting table through a slide rail mounting seat; a first cylinder is also arranged on the right side of the first grinding slide rail, and the first cylinder is fixedly installed on the grinding mounting table, and the first cylinder drives the connection with the knife seat.

[0012] Furthermore, the first synchronous belt device includes a first driving pulley, a first driven pulley and a first synchronous belt; the first driven pulley and the first driving pulley are rotatably connected to the left and right sides of the front end of the loading and unloading mounting plate through a rotating shaft and a bearing, respectively, wherein the first synchronous belt transmission is connected between the first driving pulley and the first driven pulley, and at the same time, a synchronous belt clamp is fixedly connected to the rear side of the loading and unloading mounting plate, and the synchronous belt clamp is fixedly connected to a section of the first synchronous belt; when the first driving pulley rotates, it can drive the first synchronous belt to move, thereby driving the loading and unloading mounting plate to move along the loading and unloading slide rail.

[0013] Furthermore, the first synchronous belt device also includes a first stepper motor for driving the first driving pulley to rotate, the first stepper motor is fixedly installed on the right side of the rear end of the loading and unloading mounting plate, and the first stepper motor is drivingly connected to the first driving pulley.

[0014] Furthermore, two guide column mounting plates are provided on the right side of the tool holder, and a guide column is fixedly connected between the two guide column mounting plates; a sliding plate is slidably connected to the guide column, and the sliding plate is fixedly mounted on the output shaft of the first cylinder; and a compression spring is also sleeved on the guide column.

[0015] Furthermore, it also includes a top fixing device capable of pressing down the top of the cylindrical injection molded part, the top fixing device includes a horizontally movable slide rail, the horizontally movable slide rail is fixedly installed on the top rear side of the horizontal mounting plate, and the horizontal mounting plate is fixedly installed on the right front end of the table plate; a horizontally movable seat is slidably installed on the horizontally movable slide rail through a slider, and a second cylinder is also provided at the front end of the horizontally movable slide rail, and the output shaft of the second cylinder is fixedly installed at the front end of the horizontally movable seat; a fixed bracket is also fixedly installed on the top of the horizontally movable seat, and a third cylinder is fixedly installed on the rear side of the fixed bracket, the third cylinder is vertically downwardly arranged, and a downward pressure fixing seat is fixedly installed on the output shaft of the second cylinder, and the bottom center of the downward pressure fixing seat is connected to a downward pressure plate through a rotating shaft and a bearing.

[0016] Furthermore, it also includes a loading and positioning device for assisting the loading and unloading device in loading materials. The loading and positioning device is fixedly installed on the top of the table and is located in front of the loading and unloading device. At the same time, a U-shaped groove is opened on the top of the loading and positioning device.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] The side wall of the cylindrical injection molded part can be polished and processed, and loading and unloading are convenient. The polishing position is not at the same place as the loading and unloading position, which reduces the damage to the operator caused by the dust generated by the polishing. The loading and unloading position is not at the same place as the polishing position, which also increases the safety during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The figure is a schematic diagram of the structure of a cylindrical injection molded part side wall grinding device.

[0020] Figure 2 This is a schematic diagram of the structure of a cylindrical injection molded part side wall grinding device from another angle.

[0021] Figure 3 The figure is a front view of a device for grinding the side wall of a cylindrical injection molded part.

[0022] Figure 4The figure is a side view of a device for grinding the side wall of a cylindrical injection molded part.

[0023] Figure 5 A top view of a device for grinding the side wall of a cylindrical injection molded part.

[0024] Figure 6 The present invention is a schematic structural diagram of a grinding device in a cylindrical injection molded part side wall grinding device.

[0025] Figure 7 This is a schematic diagram of the structure of a grinding device in a cylindrical injection molded part side wall grinding device from another angle.

[0026] Figure 8 The present invention is a front view of a grinding device in a cylindrical injection molded part side wall grinding device.

[0027] Fig. 9 The figure is a schematic diagram of the structure of a top fixing device in a cylindrical injection molded part side wall grinding device.

[0028] Fig.10 The figure is a side view of a top fixing device in a cylindrical injection molded part side wall grinding device.

[0029] Fig.11 The present invention is a schematic structural diagram of a cylindrical injection molded part processed by a cylindrical injection molded part side wall grinding device. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical scheme and advantages of the embodiment of the utility model clearer, the technical scheme in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. The components of the embodiment of the utility model generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiment of the utility model provided in the drawings is not intended to limit the scope of the utility model claimed for protection, but merely represents the selected embodiment of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model.

[0031] See also Figure 1-4 A cylindrical injection molded part side wall grinding device comprises a frame 1, a table 101 is fixedly mounted on the top of the frame 1, a loading and unloading device 2 and a grinding device 3 are fixedly mounted on the table 101, wherein the loading and unloading device 2 is located at the rear side of the table 101 and is used for loading and unloading the injection molded parts, and the grinding device 3 is used for receiving the injection molded parts transported by the loading and unloading device 2 and grinding the side walls of the injection molded parts;

[0032] like Figure 1 As shown, the loading and unloading device 2 includes a loading and unloading mounting plate 201, a first synchronous belt device 210 and a vacuum suction cup 222; the loading and unloading mounting plate 201 is arranged along the left and right directions, and two mounting brackets 202 are fixedly installed on the rear side of the loading and unloading mounting plate 201, and the bottom of the mounting bracket 202 is fixedly connected to the top of the table 101, and at least two loading and unloading slide rails 202 are fixedly installed at the front end of the loading and unloading mounting plate 201, and the loading and unloading slide rails 202 are arranged along the length direction of the loading and unloading mounting plate 201, and the front end of the loading and unloading slide rails 202 is slidably connected to the loading and unloading sliding seat 203 through a slider; at the same time, a group of first synchronous belt devices 210 are also arranged between the two loading and unloading slide rails 202 to drive the loading and unloading sliding seat 203 to move;

[0033] The first synchronous belt device 210 includes a first driving pulley 211, a first driven pulley 212 and a first synchronous belt 213; the first driven pulley 212 and the first driving pulley 211 are rotatably connected to the left and right sides of the front end of the loading and unloading mounting plate 201 through a rotating shaft and a bearing, wherein the first synchronous belt 213 is transmission-connected between the first driving pulley 211 and the first driven pulley 212, and at the same time, a synchronous belt clamp 214 is fixedly connected to the rear side of the loading and unloading mounting plate 201, and the synchronous belt clamp 214 is fixedly connected to a section of the first synchronous belt 213; when the first driving pulley 211 rotates, the first synchronous belt 213 can be driven to move, thereby driving the loading and unloading mounting plate 201 to move along the loading and unloading slide rail 202;

[0034] The first synchronous belt device 210 also includes a first stepper motor 215 for driving the first driving pulley 211 to rotate. The first stepper motor 215 is fixedly mounted on the right side of the rear end of the loading and unloading mounting plate 201, and the first stepper motor 215 is drivingly connected to the first driving pulley 211;

[0035] A loading and unloading cylinder 220 is also fixedly installed at the front end of the loading and unloading sliding seat 203, and a vacuum suction cup bracket 221 is fixedly installed on the output end of the loading and unloading cylinder 220, and at least four vacuum suction cups 222 are fixedly installed on the vacuum suction cup bracket 221;

[0036] like Figure 6-8 The grinding device 3 includes a grinding mounting table 301, a grinding fixture 302 and a grinding drive motor 307. The grinding fixture 302 includes a fixed round table 303. The fixed round table 303 is cylindrical in shape. A mounting shaft 304 is fixedly connected to the bottom of the fixed round table 303. The mounting shaft 304 is rotatably connected to a bearing seat 305 through a bearing. At the same time, the bearing seat 305 is fixedly installed on the top of the grinding mounting table 301. The bottom of the mounting shaft 304 passes through the grinding mounting table 301 and is fixedly installed with a second driven pulley 306.

[0037] The polishing drive motor 307 is fixedly mounted on the bottom of the polishing mounting table 301, wherein a second driving pulley 308 is fixedly mounted on the output shaft of the polishing drive motor 307, and the second driving pulley 308 is driven and connected to the second driven pulley 306 through a second synchronous belt 309;

[0038] The grinding device 3 further includes a grinding knife 310. The grinding knife 310 is arranged in a concave arc shape on one side close to the fixed truncated table 303, and the inner side of the concave arc shape is arranged rough. The arc-shaped grinding knife 310 enables the grinding knife 310 to fit the arc-shaped side wall of the cylindrical injection molded part 9 when contacting the cylindrical injection molded part 9.

[0039] The grinding knife 310 is fixedly mounted on the front right side of the knife seat 311, and the knife seat 311 is slidably arranged on the first grinding slide rail 312 through a slider, and the first grinding slide rail 312 is fixedly mounted on the top rear side of the grinding mounting table 301 through a slide rail mounting seat;

[0040] A first cylinder 313 is also provided on the right side of the first grinding slide rail 312. The first cylinder 313 is fixedly mounted on the grinding mounting table 301, and the first cylinder 313 drives the connecting tool holder 311.

[0041] Furthermore, since the first cylinder 313 itself cannot stop at a certain position accurately, and since the side walls of different cylindrical injection molded parts 9 to be polished may have different conditions, in this solution, two guide post mounting plates 314 are further provided on the right side of the tool holder 311, and a guide post 315 is fixedly connected between the two guide post mounting plates 314; a sliding plate 316 is slidably connected to the guide post 315, and the sliding plate 316 is fixedly installed on the output shaft of the first cylinder 313; and a compression spring 317 is also sleeved on the guide post 315;

[0042] When the first cylinder 313 contracts, the sliding plate 316 compresses the compression spring 317 forward, and the compression spring pushes the guide post mounting plate 314 forward, thereby pushing the knife seat 311 forward. At this time, the grinding knife 310 installed on the knife seat 311 approaches the side wall of the cylindrical injection molded part 9. The utility model adopts the compression spring to indirectly push the movement of the grinding knife 310, so that the grinding knife can always fit the surface of the cylindrical injection molded part 9.

[0043] like Figure 9-10 In this solution, a top fixing device 4 is also included which can press the top of the cylindrical injection molded part 9.

[0044] The top fixing device 4 includes a horizontal moving slide rail 401, which is fixedly mounted on the top rear side of a horizontal mounting plate 402, and the horizontal mounting plate 402 is fixedly mounted on the right front end of the table 101; a horizontal moving seat 408 is slidably mounted on the horizontal moving slide rail 401 through a slider, and a second cylinder 403 is also provided at the front end of the horizontal moving slide rail 401, and the output shaft of the second cylinder 403 is fixedly mounted on the front end of the horizontal moving seat 408;

[0045] A fixed bracket 404 is also fixedly installed on the top of the horizontal moving seat 408, and a third cylinder 405 is fixedly installed on the rear side of the fixed bracket 404. The third cylinder 405 is vertically arranged downward, and a downward pressure fixed seat 406 is fixedly installed on the output shaft of the second cylinder 405. The bottom center of the downward pressure fixed seat 406 is connected to a lower pressure plate 407 through a rotating shaft and a bearing.

[0046] At the same time, the utility model also includes a loading positioning device 5 for assisting the loading and unloading device 2 in loading materials. The loading positioning device 5 is fixedly installed on the top of the platen 101 and is located in front of the loading and unloading device 2. At the same time, a U-shaped groove 501 is opened on the top of the loading positioning device 5. When loading materials, a cylindrical injection molded part is placed in the U-shaped groove 501, so that each time the material is discharged, it can be placed in a fixed position, which is convenient for the loading and unloading position 2 to grab;

[0047] When the utility model is used,

[0048] The operator puts the cylindrical injection molded part 9 into the U-shaped groove 501 of the loading and positioning device 5, and the loading and unloading cylinder 220 drives the vacuum suction cup 222 downward, and the vacuum suction cup 222 sucks the cylindrical injection molded part 9, and the loading and unloading cylinder 220 drives the cylindrical injection molded part 9 upward;

[0049] The first stepper motor 215 of the first synchronous belt device 210 is actuated to drive the loading and unloading sliding seat 203 and the cylindrical injection molded part 9 to move rightward to just above the fixed truncated table 303 of the grinding device 3, and the loading and unloading cylinder 220 is actuated to drive the cylindrical injection molded part 9 downward, at which time the cylindrical injection molded part 9 is sleeved on the fixed truncated table 303; then the first stepper motor 215 is actuated to drive the loading and unloading sliding seat 203 to move leftward;

[0050] The second cylinder 403 of the top fixing device 4 is actuated to drive the lower pressure plate 407 to move to the top of the cylindrical injection molded part 9. The second cylinder 403 is actuated to cause the lower pressure plate 407 to press the top of the cylindrical injection molded part 9. The pressure generated by the lower pressure plate 407 increases the friction between the top of the inner cavity of the cylindrical injection molded part 9 and the fixed round table 303, so that the cylindrical injection molded part 9 can rotate together with the fixed round table 303. The grinding drive motor 307 is actuated to drive the fixed round table 303 to rotate, thereby driving the cylindrical injection molded part 9 to rotate. The first cylinder 313 is actuated to drive the grinding knife 310 to approach the cylindrical injection molded part 9, and the grinding knife grinds the side of the cylindrical injection molded part 9.

[0051] After the grinding is completed, the first cylinder 313 moves to reset the grinding knife 310, the driving motor 307 stops, and the second cylinder 403 moves upward, and the second cylinder 403 drives the lower pressure plate 407 to reset;

[0052] The first stepper motor 215 of the first synchronous belt device 210 is activated to drive the loading and unloading sliding seat 203 to move rightward to just above the fixed truncated table 303 of the grinding device 3, the loading and unloading cylinder 220 is activated to drive the vacuum suction cup 222 downward, the vacuum suction cup 222 is activated to suck the cylindrical injection molded part 9, and the loading and unloading cylinder 220 is activated to drive the cylindrical injection molded part 9 upward; the first stepper motor 215 is activated to drive the loading and unloading sliding seat 203 to connect to the polished cylindrical injection molded part 9 to move leftward, and then the cylindrical injection molded part 9 is placed in the U-shaped groove 501 of the loading and positioning device 5, and the operator can remove the polished cylindrical injection molded part 9.

[0053] In the description of the present utility model, it should be noted that the terms "upper", "lower", "inner", "outer", "left", "right" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed when in use, or the orientation or positional relationship commonly understood by those skilled in the art, which is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the equipment or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present utility model. In addition, the terms "first", "second" and the like are only used to distinguish the description, and cannot be understood as indicating or implying relative importance. In the description of the present utility model, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "connection" and the like should be understood in a broad sense, for example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal connection of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.

Claims

1. A cylindrical injection molded part side wall grinding device, comprising a frame, a table is fixedly mounted on the top of the frame, characterized in that: The table is fixedly installed with a loading and unloading device and a grinding device, wherein the loading and unloading device is located at the rear side of the table and is used for loading and unloading the injection molded parts, and the grinding device is used for receiving the injection molded parts transported by the loading and unloading device and grinding the side walls of the injection molded parts; The loading and unloading device includes a loading and unloading mounting plate, a first synchronous belt device and a vacuum suction cup; the loading and unloading mounting plate is arranged along the left and right directions, and two mounting brackets are fixedly installed on the rear side of the loading and unloading mounting plate, and the bottom of the mounting bracket is fixedly connected to the top of the table plate, and at least two loading and unloading slide rails are fixedly installed at the front end of the loading and unloading mounting plate, and the loading and unloading slide rails are arranged along the length direction of the loading and unloading mounting plate, and the front end of the loading and unloading slide rails is slidably connected to the loading and unloading sliding seat through a slider; at the same time, a group of first synchronous belt devices is also arranged between the two loading and unloading slide rails to drive the loading and unloading sliding seat to move; a loading and unloading cylinder is also fixedly installed at the front end of the loading and unloading sliding seat, and a vacuum suction cup bracket is fixedly installed on the output end of the loading and unloading cylinder, and at least four vacuum suction cups are fixedly installed on the vacuum suction cup bracket; The grinding device includes a grinding mounting table, a grinding fixture and a grinding drive motor, the grinding fixture includes a fixed round table, the fixed round table is cylindrical as a whole, the bottom of the fixed round table is fixedly connected to a mounting shaft, the mounting shaft is rotatably connected to a bearing seat through a bearing, and the bearing seat is fixedly mounted on the top of the grinding mounting table, the bottom of the mounting shaft passes through the grinding mounting table and is fixedly mounted with a second driven pulley; the grinding drive motor is fixedly mounted on the bottom of the grinding mounting table, wherein a second driving pulley is fixedly mounted on the output shaft of the grinding drive motor, and the second driving pulley is connected to the second driven pulley through a second synchronous belt drive; The grinding device also includes a grinding knife, and the side of the grinding knife close to the fixed truncated table is arranged in an inwardly concave arc shape, and the inner side of the inwardly concave arc portion is arranged roughly, so that the grinding knife arranged in an arc shape can fit the arc-shaped side wall of the cylindrical injection molded part when the grinding knife contacts the cylindrical injection molded part; the grinding knife is fixedly installed on the front right side of the knife seat, and the knife seat is slidably arranged on the first grinding slide rail through a slider, and the first grinding slide rail is fixedly installed on the top rear side of the grinding mounting table through a slide rail mounting seat; a first cylinder is also arranged on the right side of the first grinding slide rail, and the first cylinder is fixedly installed on the grinding mounting table, and the first cylinder drives the connection with the knife seat.

2. A cylindrical injection molded part side wall grinding device according to claim 1, characterized in that: The first synchronous belt device includes a first driving pulley, a first driven pulley and a first synchronous belt; the first driven pulley and the first driving pulley are rotatably connected to the left and right sides of the front end of the loading and unloading mounting plate through a rotating shaft and a bearing respectively, wherein the first synchronous belt transmission is connected between the first driving pulley and the first driven pulley, and at the same time, a synchronous belt clamp is fixedly connected to the rear side of the loading and unloading mounting plate, and the synchronous belt clamp is fixedly connected to a section of the first synchronous belt; when the first driving pulley rotates, it can drive the first synchronous belt to move, thereby driving the loading and unloading mounting plate to move along the loading and unloading slide rail.

3. A cylindrical injection molded part side wall grinding device according to claim 2, characterized in that: The first synchronous belt device also includes a first stepper motor for driving the first active pulley to rotate. The first stepper motor is fixedly installed on the right side of the rear end of the loading and unloading mounting plate, and the first stepper motor is drivingly connected to the first active pulley.

4. A cylindrical injection molded part side wall grinding device according to claim 1, characterized in that: Two guide post mounting plates are also arranged on the right side of the knife seat, and a guide post is fixedly connected between the two guide post mounting plates; a sliding plate is slidably connected to the guide post, and the sliding plate is fixedly mounted on the output shaft of the first cylinder; and a compression spring is also sleeved on the guide post.

5. A cylindrical injection molded part side wall grinding device according to claim 1, characterized in that: It also includes a top fixing device that can press down the top of the cylindrical injection molded part, and the top fixing device includes a horizontally movable slide rail, and the horizontally movable slide rail is fixedly installed on the top rear side of the horizontal mounting plate, and the horizontal mounting plate is fixedly installed on the right front end of the table plate; a horizontally movable seat is slidably installed on the horizontally movable slide rail through a slider, and a second cylinder is also provided at the front end of the horizontally movable slide rail, and the output shaft of the second cylinder is fixedly installed at the front end of the horizontally movable seat; a fixed bracket is also fixedly installed on the top of the horizontally movable seat, and a third cylinder is fixedly installed on the rear side of the fixed bracket, and the third cylinder is vertically downwardly arranged, and a downward pressure fixing seat is fixedly installed on the output shaft of the second cylinder, and the bottom center of the downward pressure fixing seat is connected to a downward pressure plate through a rotating shaft and a bearing.

6. A cylindrical injection molded part side wall grinding device according to claim 1, characterized in that: It also includes a loading and positioning device for assisting the loading and unloading device in loading materials. The loading and positioning device is fixedly installed on the top of the table and is located in front of the loading and unloading device. At the same time, a U-shaped groove is opened on the top of the loading and positioning device.

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