Raw material crushing mechanism for plastic bucket injection molding machining
By introducing protective sleeves and adjustment mechanisms in the plastic barrel injection molding process, the problems of debris splashing and equipment damage in the crushing mechanism are solved, automated crushing and flexible protection are achieved, and production efficiency and equipment safety are improved.
Patent Information
- Application Number
- CN202422095440.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-28
- Publication Date
- 2025-09-16
- Estimated Expiration
- 2034-08-28
AI Technical Summary
The existing pulverizing mechanism of plastic barrel injection molding has problems such as imperfect pulverizing bin design, which causes debris to splash, and the drive shaft and motor are easily damaged. In addition, the protective device lacks flexibility, affecting production efficiency and equipment life.
The protective device consisting of a protective sleeve, a slot, a connecting shaft, a guide frame, etc., combined with an adjustment mechanism and a reducer, realizes the automation and protection functions of the crushing process, prevents the debris from splashing, and protects the drive shaft and motor when encountering large resistance.
It effectively prevents debris from splashing, protects equipment from damage, improves production efficiency and equipment durability, reduces maintenance costs and downtime, and the adjustment mechanism realizes a flexible protection trigger mechanism.
Smart Images
Figure CN223339775U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of raw material crushing mechanisms for injection molding of plastic barrels, and more particularly to a raw material crushing mechanism for injection molding of plastic barrels. Background Art
[0002] In the current field of plastic barrel injection molding, the raw material crushing mechanism is an important link. It is responsible for crushing plastic waste or large pieces of raw materials to facilitate subsequent injection molding. However, the existing crushing mechanism has some problems and limitations in structure and function, which have an adverse effect on production efficiency and equipment life.
[0003] First, some existing crushing mechanisms have a relatively simple structure, and the design of the crushing chamber may not be perfect. During the crushing process, due to the structural limitations of the crushing chamber, plastic residues may splash everywhere, which not only affects the cleanliness of the working environment, but also may pose a threat to the health of the operators. In addition, the splashing residues may clog or damage the crushing equipment, further reducing production efficiency and equipment life.
[0004] Secondly, the existing technology often uses a method of directly connecting the motor and the drive shaft to drive the crushing knife to perform the crushing work. This driving method is likely to cause the drive shaft to be subjected to excessive torque when the crushing knife encounters large resistance or is blocked by foreign objects, thereby causing the risk of the drive shaft breaking. In addition, in this case, the motor may also be damaged due to overload, which will not only cause production interruption, but also require additional maintenance costs and time.
[0005] In order to solve the above problems, some devices in the prior art use protective devices to prevent the drive shaft from breaking and the motor from overloading. These protective devices are usually triggered when the crushing blade encounters large resistance, causing the motor to idle, thereby protecting the drive shaft and the motor from damage. However, the structure of such protective devices is often relatively simple and lacks flexibility. The triggering mechanism cannot be flexibly adjusted according to actual production needs and working conditions. This may cause the protective device to be triggered prematurely when it is not necessary, affecting production efficiency; or it may fail to be triggered in time when protection is really needed, resulting in damage to the equipment. Utility Model Content
[0006] (1) Technical problems solved
[0007] In view of the problems existing in the prior art, the utility model provides a raw material crushing mechanism for injection molding of plastic barrels to solve the technical problems mentioned in the background technology.
[0008] (2) Technical solution
[0009] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a raw material crushing mechanism for injection molding of plastic barrels, comprising a crushing bin, characterized in that: a crushing device is provided in the crushing bin, a protective device is provided on one side of the crushing bin, the protective device comprises a protective sleeve, a card slot, a connecting shaft, an insertion rod, a guide frame, a guide block, a movable block, a movable slot and a second spring, the protective sleeve is detachably sleeved on the outside of the connecting shaft, the insertion rod is fixedly connected to one side of the guide frame, the guide frame is movably arranged on one side of the guide block, the guide block and the movable block can be movably installed in the movable slot, and the two ends of the second spring are respectively connected to the movable block and the guide block, An adjustment mechanism is provided on the outside of the connecting shaft, and the adjustment mechanism includes a limit plate, a limit frame, a limit sleeve, a clearance groove, a rotating sleeve, an external gear, a screw, an adjustment sleeve and an internal gear. The limit plate is fixedly arranged on the inside of the limit frame, and the limit frame is fixedly connected to one side of the limit sleeve. The limit sleeve is movably arranged on the outside of the adjustment sleeve, the clearance groove is opened on the rotating sleeve, and the rotating sleeve is movably arranged on the outside of the protective sleeve. The external gear is fixedly connected to one end of the screw, and the movable block is movably connected to the screw through a thread. The adjusting sleeve is movably arranged on the outside of the connecting shaft, and the internal gear is fixedly arranged on the inside of the adjusting sleeve, and the internal gear and the external gear are meshed.
[0010] The present invention is further configured such that a first spring is movably provided on one side of the limiting sleeve.
[0011] The utility model is further configured such that a limiting groove is provided on the inner side of the protective sleeve, and a limiting block is provided on the outer side of the movable block and the guide block, and the limiting block is slidably arranged in the limiting groove, and the limiting groove and the limiting block play a role in limiting and guiding the movable block and the guide block.
[0012] The utility model is further configured such that a guide rail is provided on the outer side of the protective sleeve, and a guide groove is provided on the inner side of the limiting sleeve. The guide groove is adapted to the guide rail, and the setting of the guide rail and the guide groove plays a role of limiting and guiding.
[0013] The utility model is further configured as follows: the crushing device includes a motor, a feed bin, a cover plate, a drive shaft, a crushing knife, an inclined plate, a discharge chute and a discharge port; the motor is detachably mounted on one side of the crushing bin; the feed bin is detachably mounted above the crushing bin; the cover plate is movably mounted on the inner side of the feed bin; the drive shaft is movably mounted in the crushing bin, and one end of the drive shaft is fixedly connected to the connecting shaft; the crushing knife is detachably mounted on the outer side of the drive shaft; the discharge port is opened at the bottom end of the crushing bin; the inclined plate is arranged in the crushing bin; and the discharge chute is opened on the inclined plate. The configuration of the crushing device changes the traditional structure and effectively prevents the debris from splashing everywhere.
[0014] The utility model is further configured such that a reducer is provided on one side of the crushing bin, the reducer input end is connected to the motor output end, and the reducer output end is connected to one end of the protective sleeve. The configuration of the reducer facilitates adjustment of the transmission ratio of the motor.
[0015] The present invention is further configured such that a handle is provided on one side of the cover plate, and the handle is fixedly mounted on the cover plate. The arrangement of the handle facilitates the operation of the cover plate.
[0016] The utility model is further configured such that a slide groove is opened on the inner side of the feed bin, the cover plate is slidably arranged in the slide groove, a push spring is provided on one side of the cover plate, and the other end of the push spring is connected to the inner side of the feed bin. The configuration of the above components ensures the smooth sliding and automatic resetting of the cover plate.
[0017] (3) Beneficial effects
[0018] Compared with the prior art, the present invention provides a raw material crushing mechanism for plastic barrel injection molding, which has the following beneficial effects:
[0019] 1. The beneficial effect of the crushing device is that it can effectively crush the plastic raw materials and provide suitable raw materials for subsequent injection molding. Through the coordinated work of components such as the motor, feed bin, cover, drive shaft, crushing knife, inclined plate, discharge chute and discharge port, the crushing device can realize the automated crushing process and improve production efficiency. The closed bin design can prevent debris from splashing everywhere and keep the working environment clean. At the same time, the design of the inclined plate guides the raw materials to ensure the normal operation of the crushing work.
[0020] 2. The beneficial effect of the protective device is that it can protect the crushing device from damage when encountering large resistance. Through the design of components such as the protective sleeve, slot, connecting shaft, insertion rod, guide frame, guide block, movable block, movable slot and second spring, the protective device can be triggered when the crushing knife encounters large resistance, causing the motor to idle, thereby avoiding drive shaft breakage and motor overload. This design improves the durability and safety of the equipment and reduces maintenance costs and downtime.
[0021] 3. The beneficial effect of the adjustment mechanism is reflected in its ability to flexibly adjust the triggering mechanism of the protective device according to actual needs. Through the design of components such as the limit plate, limit frame, limit sleeve, give way groove, rotating sleeve, external gear, lead screw, adjustment sleeve and internal gear, the adjustment mechanism can achieve precise control of the protective device to ensure that it can be triggered in time when needed to protect the equipment from damage. At the same time, the design of the adjustment mechanism also makes the adjustment of the protective device more convenient and quick, thereby improving the flexibility and adaptability of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1This is a schematic diagram of the overall structure of a raw material crushing mechanism for plastic barrel injection molding in the present utility model;
[0023] Figure 2 This is a schematic cross-sectional view of the crushing bin portion of the present invention;
[0024] Figure 3 It is a structural diagram of the protective device and the adjustment mechanism in the utility model;
[0025] Figure 4 It is a cross-sectional structural diagram of the protective device and the adjustment mechanism in the present utility model;
[0026] Figure 5 This is a schematic cross-sectional view of the protective device and the adjustment mechanism of the present invention from a second angle.
[0027] In the figure: 1. Crushing bin; 2. Protective cover; 3. Card slot; 4. Connecting shaft; 5. Insert rod; 6. Guide frame; 7. Guide block; 8. Movable block; 9. Movable slot; 10. Second spring; 11. Limit plate; 12. Limit frame; 13. Limit sleeve; 14. Gap; 15. Rotating sleeve; 16. External gear; 17. Lead screw; 18. Adjusting sleeve; 19. Internal gear; 20. First spring; 21. Limit slot; 22. Limit block; 23. Guide rail; 24. Guide slot; 25. Motor; 26. Feed bin; 27. Cover plate; 28. Drive shaft; 29. Crushing knife; 30. Inclined plate; 31. Discharge chute; 32. Discharge port; 33. Reducer; 34. Handle; 35. Slide; 36. Push spring. DETAILED DESCRIPTION
[0028] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.
[0029] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by ordinary technicians in the technical field to which this application belongs.
[0030] In the present invention, unless otherwise specified, directions such as "up" and "down" are usually relative to the directions shown in the drawings, or relative to the vertical, perpendicular or gravity direction; similarly, for ease of understanding and description, "left" and "right" are usually relative to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned direction words are not used to limit the present invention.
[0031] See also Figure 1-5, a raw material crushing mechanism for injection molding of plastic barrels, including a crushing bin 1, characterized in that: a crushing device is provided in the crushing bin 1, a protective device is provided on one side of the crushing bin 1, the protective device includes a protective sleeve 2, a card slot 3, a connecting shaft 4, a plug rod 5, a guide frame 6, a guide block 7, a movable block 8, a movable groove 9 and a second spring 10, the protective sleeve 2 is detachably sleeved on the outside of the connecting shaft 4, the plug rod 5 is fixedly connected to one side of the guide frame 6, the guide frame 6 is movably provided on one side of the guide block 7, the guide block 7 and the movable block 8 can be movably installed in the movable groove 9, the two ends of the second spring 10 are respectively connected to the movable block 8 and the guide block 7, an adjusting mechanism is provided on the outside of the connecting shaft 4, and the adjusting mechanism includes a limit Plate 11, limit frame 12, limit sleeve 13, give way groove 14, rotating sleeve 15, external gear 16, screw 17, adjustment sleeve 18 and internal gear 19, the limit plate 11 is fixedly arranged on the inner side of the limit frame 12, the limit frame 12 is fixedly connected to one side of the limit sleeve 13, the limit sleeve 13 is movably arranged on the outside of the adjustment sleeve 18, the give way groove 14 is opened on the rotating sleeve 15, the rotating sleeve 15 is movably arranged on the outside of the protective sleeve 2, the external gear 16 is fixedly connected to one end of the screw 17, the movable block 8 is movably connected to the screw 17 through a thread, the adjustment sleeve 18 is movably arranged on the outside of the connecting shaft 4, the internal gear 19 is fixedly arranged on the inside of the adjusting sleeve 18, and the internal gear 19 is engaged with the external gear 16.
[0032] A first spring 20 is movably provided on one side of the limiting sleeve 13 .
[0033] A limiting groove 21 is provided on the inner side of the protective sleeve 2 , and a limiting block 22 is provided on the outer side of the movable block 8 and the guide block 7 . The limiting block 22 is slidably arranged in the limiting groove 21 .
[0034] A guide rail 23 is provided on the outer side of the protective sleeve 2 , and a guide groove 24 is provided on the inner side of the limiting sleeve 13 , and the guide groove 24 is adapted to the guide rail 23 .
[0035] In this embodiment, before using the device, the trigger mechanism of the protective device must be adjusted according to the usage requirements. First, rotate the rotating sleeve 15, and the rotating sleeve 15 will drive the clearance groove 14 to move. When the position of the clearance groove 14 corresponds to the position of the limit plate 11, push the limit sleeve 13 so that the limit sleeve 13 slides along the guide rail 23 and the guide groove 24. At the same time, the limit sleeve 13 will squeeze the first spring 20, and then the limit sleeve 13 will drive the limit frame 12 and the limit plate 11 to pass through the clearance groove 14. When the first spring 20 is squeezed to the limit, the corresponding limit plate 11 just moves to the side of the rotating sleeve 15, and then rotate the rotating sleeve 15 so that the positions of the clearance groove 14 and the limit plate 11 no longer correspond, so that the limit sleeve 13 is engaged with one side of the rotating sleeve 15 through the corresponding limit plate 11. To prevent the limit sleeve 13 from moving, the outer side of the adjusting sleeve 18 loses the limit of the limit sleeve 13, and then the adjusting sleeve 18 is rotated. The adjusting sleeve 18 drives each outer gear 16 to rotate through the inner gear 19 arranged on the inner side, so that each outer gear 16 drives the lead screw 17 to rotate. Since the movable block 8 is movably mounted on the outer side of the lead screw 17 through a thread, and the limit block 22 and the limit groove 21 are limited, the movable block 8 will drive the limit block 22 to slide along the limit groove 21, and then the distance between the movable block 8 and the guide block 7 will change, and then the gap between the second spring 10 will change, so that the pressure applied by the second spring 10 to the guide block 7 will change, thereby changing the triggering mechanism of the protective device. After adjustment, release the adjusting sleeve 18 and then rotate the rotating sleeve 15 , so that the rotating sleeve 15 drives the giving groove 14 to move again, so that the position of the giving groove 14 corresponds to the position of the limit plate 11, and then the first spring 20 is reset, pushing the limit sleeve 13 to reset along the guide rail 23 and the guide groove 24, and then the limit sleeve 13 will drive the limit frame 12 and the limit plate 11 to reset, and then the limit sleeve 13 will fit to the outside of the adjustment sleeve 18 again, forming a limit for the adjustment sleeve 18, preventing the adjustment sleeve 18 from moving, and then the rotating sleeve 15 is rotated so that the position of the giving groove 14 does not correspond to the position of the limit plate 11, so that the corresponding two limit plates 11 are engaged on both sides of the rotating sleeve 15, forming a limit for the limit sleeve 13, preventing the limit sleeve 13 from moving, thereby ensuring the stability after adjustment. When there is resistance, the side wall of the slot 3 will squeeze the side wall of one end of the rod 5. Since the side wall of the slot 3 and the side wall of one end of the rod 5 are both rounded structure designs, when the resistance is large, one end of the rod 5 will slide out of the slot 3, and then the rod 5 will drive the guide frame 6 to move, so that the guide frame 6 squeezes the guide block 7, and then the guide block 7 and the movable block 8 will cooperate to squeeze the second spring 10, thereby causing the motor 25 to idle. When the position of the rod 5 corresponds to the position of the slot 3 again, the second spring 10 will push the guide block 7 to reset, so that the guide frame 6 drives the rod 5 to be inserted into the slot 3 again, and then the process is repeated. This structure effectively avoids the breakage of the drive shaft 28 and the overload of the motor 25, so that the staff has sufficient time to react and take reasonable measures to debug the equipment.
[0036] See also Figure 1 and Figure 2 As an implementation method of the crushing device: the crushing device includes a motor 25, a feed bin 26, a cover plate 27, a drive shaft 28, a crushing knife 29, an inclined plate 30, a discharge chute 31 and a discharge port 32. The motor 25 is detachably mounted on one side of the crushing bin 1, the feed bin 26 is detachably mounted above the crushing bin 1, the cover plate 27 is movably mounted on the inner side of the feed bin 26, the drive shaft 28 is movably mounted in the crushing bin 1, and one end of the drive shaft 28 is fixedly connected to the connecting shaft 4, the crushing knife 29 is detachably mounted on the outside of the drive shaft 28, the discharge port 32 is opened at the bottom end of the crushing bin 1, the inclined plate 30 is arranged in the crushing bin 1, and the discharge chute 31 is opened on the inclined plate 30.
[0037] A speed reducer 33 is provided on one side of the crushing bin 1 , the input end of the speed reducer 33 is connected to the output end of the motor 25 , and the output end of the speed reducer 33 is connected to one end of the protective sleeve 2 .
[0038] A handle 34 is provided on one side of the cover plate 27 , and the handle 34 is fixedly mounted on the cover plate 27 .
[0039] A chute 35 is provided on the inner side of the feed bin 26 , and the cover plate 27 is slidably arranged in the chute 35 . A push spring 36 is provided on one side of the cover plate 27 , and the other end of the push spring 36 is connected to the inner side of the feed bin 26 .
[0040] More specifically, when the device needs to be used, the device is usually installed above the machine tool. First, the cover plate 27 is pushed by the handle 34, so that the cover plate 27 slides along the slide groove 35. At the same time, the cover plate 27 will squeeze the push spring 36 connected on one side. When the push spring 36 is squeezed to the limit, the raw material is put into the feed bin 26. Then the handle 34 is released, and the push spring 36 pushes the cover plate 27 to return, so that the cover plate 27 closes the feed bin 26. Then the motor 25 is turned on. After the deceleration effect of the reducer 33, the motor 25 drives the connecting shaft 4 and the drive shaft 28 to rotate through the protective sleeve 2. Then the drive shaft 28 drives the crushing knife 29 to crush the raw material. The closed bin body can prevent the debris from splashing everywhere. Then, the crushed raw material will pass through the discharge chute 31 to the discharge port 32, and then enter the external collection device through the discharge port 32. The setting of the inclined plate 30 guides the raw material to ensure the normal operation of the crushing work.
[0041] In summary, when the entire device is in use or running: before using the device, the trigger mechanism of the protective device must be adjusted according to the usage requirements. First, rotate the rotating sleeve 15, and the rotating sleeve 15 will drive the clearance groove 14 to move. When the position of the clearance groove 14 corresponds to the position of the limit plate 11, push the limit sleeve 13 so that the limit sleeve 13 slides along the guide rail 23 and the guide groove 24. At the same time, the limit sleeve 13 will squeeze the first spring 20, and then the limit sleeve 13 will drive the limit frame 12 and the limit plate 11 to pass through the clearance groove 14. When the first spring 20 is squeezed to the limit, the corresponding limit plate 11 just moves to the side of the rotating sleeve 15, and then rotate the rotating sleeve 15 so that the position of the clearance groove 14 and the limit plate 11 no longer correspond, so that the limit sleeve 13 passes through the corresponding limit The positioning plate 11 is engaged with one side of the rotating sleeve 15 to prevent the limit sleeve 13 from moving. At this time, the outer side of the adjusting sleeve 18 loses the limit of the limit sleeve 13, and then the adjusting sleeve 18 is rotated. The adjusting sleeve 18 drives each outer gear 16 to rotate through the internal gear 19 arranged on the inside, so that each outer gear 16 drives the lead screw 17 to rotate. Since the movable block 8 is movably installed on the outside of the lead screw 17 through a thread, and the limit block 22 and the limit groove 21 are limited, the movable block 8 will drive the limit block 22 to slide along the limit groove 21, and then the distance between the movable block 8 and the guide block 7 will change, and then the gap between the second spring 10 will change, so that the pressure applied by the second spring 10 to the guide block 7 changes, thereby changing the triggering mechanism of the protective device, adjusting the engagement. After that, the adjusting sleeve 18 is loosened, and the rotating sleeve 15 is rotated so that the rotating sleeve 15 drives the giving groove 14 to move again, so that the position of the giving groove 14 corresponds to the position of the limit plate 11, and then the first spring 20 is reset, pushing the limiting sleeve 13 to reset along the guide rail 23 and the guide groove 24, and then the limiting sleeve 13 will drive the limiting frame 12 and the limiting plate 11 to reset, and then the limiting sleeve 13 will be fitted to the outside of the adjusting sleeve 18 again, forming a limit for the adjusting sleeve 18 to prevent the adjusting sleeve 18 from moving, and then the rotating sleeve 15 is rotated so that the position of the giving groove 14 does not correspond to the position of the limit plate 11, so that the corresponding two limit plates 11 are engaged on both sides of the rotating sleeve 15, forming a limit for the limit sleeve 13 to prevent the movement of the limit sleeve 13, thereby ensuring the adjustment When the pulverizing blade 29 encounters a large resistance during use, the side wall of the card slot 3 will squeeze the side wall of one end of the rod 5. Since the side wall of the card slot 3 and the side wall of one end of the rod 5 are both rounded, when the resistance is large, one end of the rod 5 will slide out of the card slot 3, and then the rod 5 will drive the guide frame 6 to move, so that the guide frame 6 squeezes the guide block 7, and then the guide block 7 and the movable block 8 cooperate to squeeze the second spring 10, thereby causing the motor 25 to idle. When the position of the rod 5 corresponds to the position of the card slot 3 again, the second spring 10 will push the guide block 7 to reset, so that the guide frame 6 drives the rod 5 to be inserted into the card slot 3 again, and then the process is repeated. This structure effectively avoids the breakage of the drive shaft 28 and the overload of the motor 25.This allows the staff to have sufficient time to react and take reasonable measures to debug the equipment.
[0042] When the device needs to be used, it is usually installed above the machine tool. First, the cover plate 27 is pushed by the handle 34, so that the cover plate 27 slides along the slide groove 35. At the same time, the cover plate 27 will squeeze the push spring 36 connected on one side. When the push spring 36 is squeezed to the limit, the raw material is put into the feed bin 26. Then the handle 34 is released, and the push spring 36 pushes the cover plate 27 to return, so that the cover plate 27 closes the feed bin 26. Then the motor 25 is opened. After the deceleration effect of the reducer 33, the motor 25 drives the connecting shaft 4 and the drive shaft 28 to rotate through the protective sleeve 2. Then the drive shaft 28 drives the crushing knife 29 to crush the raw material. The closed bin body can prevent the debris from splashing everywhere. Then, the crushed raw material will pass through the discharge chute 31 to the discharge port 32, and then enter the peripheral collection device through the discharge port 32. The setting of the inclined plate 30 plays a guiding role to ensure the normal operation of the crushing work.
[0043] In all the schemes mentioned above, the connection between the two components can be selected according to actual conditions by welding, bolt and nut connection, bolt or screw connection or other well-known connection methods, which will not be listed here one by one. In the above, all fixed connections are preferably welded. Although the embodiments of the present invention have been shown and described, it can be understood by ordinary technicians in this field that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.
Claims
1. A raw material crushing mechanism for plastic barrel injection molding, comprising a crushing chamber (1), characterized by: A crushing device is provided in the crushing bin (1), and a protective device is provided on one side of the crushing bin (1). The protective device comprises a protective sleeve (2), a card slot (3), a connecting shaft (4), an insert rod (5), a guide frame (6), a guide block (7), a movable block (8), a movable slot (9) and a second spring (10). The insert rod (5) is connected to one side of the guide frame (6), and the guide frame (6) is provided on one side of the guide block (7). The two ends of the second spring (10) are respectively connected to the movable block (8) and the guide block (7). An adjustment mechanism is provided on the outside of the connecting shaft (4), and the adjustment mechanism comprises a limit plate (11 ), a limiting frame (12), a limiting sleeve (13), a clearance groove (14), a rotating sleeve (15), an external gear (16), a lead screw (17), an adjusting sleeve (18) and an internal gear (19), wherein the limiting plate (11) is arranged on the inner side of the limiting frame (12), the limiting sleeve (13) is sleeved on the outer side of the adjusting sleeve (18), the clearance groove (14) is opened on the rotating sleeve (15), the rotating sleeve (15) is sleeved on the outer side of the protective sleeve (2), the external gear (16) is connected to one end of the lead screw (17), the adjusting sleeve (18) is arranged on the outer side of the connecting shaft (4), and the internal gear (19) is arranged on the inner side of the adjusting sleeve (18).
2. The raw material crushing mechanism for plastic barrel injection molding according to claim 1, characterized in that: A first spring (20) is movably provided on one side of the limiting sleeve (13).
3. The raw material crushing mechanism for plastic barrel injection molding according to claim 2, characterized in that: A limiting groove (21) is provided on the inner side of the protective sleeve (2), and limiting blocks (22) are provided on the outer sides of the movable block (8) and the guide block (7), and the limiting blocks (22) are slidably arranged in the limiting groove (21).
4. The raw material crushing mechanism for plastic barrel injection molding according to claim 3, characterized in that: A guide rail (23) is provided on the outside of the protective sleeve (2), and a guide groove (24) is provided on the inside of the limiting sleeve (13), wherein the guide groove (24) is adapted to the guide rail (23).
5. A raw material crushing mechanism for plastic barrel injection molding according to any one of claims 1 to 4, characterized in that: The pulverizing device comprises a motor (25), a feed bin (26), a cover plate (27), a drive shaft (28), a crushing knife (29), an inclined plate (30), a discharge chute (31) and a discharge port (32); the motor (25) is detachably mounted on one side of the crushing bin (1); the feed bin (26) is detachably mounted above the crushing bin (1); the cover plate (27) is movably mounted on the inner side of the feed bin (26); the drive shaft (28) is movably mounted in the crushing bin (1), and one end of the drive shaft (28) is fixedly connected to the connecting shaft (4); the crushing knife (29) is detachably mounted on the outer side of the drive shaft (28); the discharge port (32) is opened at the bottom end of the crushing bin (1); the inclined plate (30) is arranged in the crushing bin (1); and the discharge chute (31) is opened on the inclined plate (30).
6. The raw material crushing mechanism for plastic barrel injection molding according to claim 5, characterized in that: A reducer (33) is provided on one side of the crushing bin (1); the input end of the reducer (33) is connected to the output end of the motor (25); and the output end of the reducer (33) is connected to one end of the protective sleeve (2).
7. The raw material crushing mechanism for plastic barrel injection molding according to claim 6, characterized in that: A handle (34) is provided on one side of the cover plate (27), and the handle (34) is fixedly mounted on the cover plate (27).
8. The raw material crushing mechanism for plastic barrel injection molding according to claim 7, characterized in that: A chute (35) is provided on the inner side of the feed bin (26), and the cover plate (27) is slidably arranged in the chute (35). A push spring (36) is provided on one side of the cover plate (27), and the other end of the push spring (36) is connected to the inner side of the feed bin (26).