Safe barrel cover hinge structure and vertical color mixer
By introducing a pin connection and an arc-shaped guide groove design between the upper and lower hinge seats of the vertical color mixer, combined with a self-locking pin and a spring, the lid can be reliably locked, solving the safety hazards caused by the automatic closing of the lid and ensuring operational safety.
Patent Information
- Application Number
- CN202520012625.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-03
- Publication Date
- 2026-01-13
- Estimated Expiration
- 2035-01-03
AI Technical Summary
The hinge structure of the barrel lid of the existing vertical color mixing machine is prone to sudden drop of the barrel lid due to vibration or shaking, which may cause injury to the operator.
The upper and lower hinge seats are connected by pins, combined with arc-shaped guide grooves and self-locking pins, and the lid is reliably locked by the action of springs to prevent automatic closing.
It effectively prevents the lid from closing automatically, ensuring operational safety, and is suitable for operations such as adding, discharging, cleaning, and maintenance.
Smart Images
Figure CN223790782U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of plastic mixing technology, specifically a safe bucket lid hinge structure and a vertical color mixer. Background Technology
[0002] Vertical color mixing machines are commonly used color mixing and stirring equipment in plastic processing. They are used to mix and color plastic raw materials and recycled materials before injection molding. The maximum mixing capacity at one time can reach 200Kg. Due to their fast and uniform mixing, good mixing effect, convenient movement, and easy cleaning, there is a large market demand.
[0003] Currently, the hinge structure of the barrel lid of the vertical color mixing machine on the market basically follows the simple hinge structure of twenty years ago, which consists of an upper hinge, a lower hinge, and a central pivot pin. When using the vertical color mixing machine, the barrel lid often needs to be opened. If the color mixing machine vibrates, shakes during testing or feeding, or is bumped by pedestrians, the barrel lid is very likely to fall and close suddenly due to its own weight, causing physical injuries to the operator's fingers, palms, arms, head, etc.
[0004] Based on the aforementioned technical problems and safety defects, this application proposes a simple, economical, and practical safe bucket lid hinge structure and a vertical color mixing machine. Utility Model Content
[0005] The purpose of this invention is to provide a safe bucket lid hinge structure and a vertical color mixing machine to solve the problems mentioned in the background art.
[0006] Firstly, to achieve the above objectives, this utility model provides the following technical solution: a safety bucket lid hinge structure, comprising a safety bucket lid hinge assembled between a bucket body and a bucket lid, wherein the safety bucket lid hinge includes a lower hinge seat disposed on the bucket body and an upper hinge seat disposed on the bucket lid, the upper hinge seat and the lower hinge seat are rotatably connected by a pin, and the upper hinge seat can rotate around the pin to realize the opening and closing of the bucket lid;
[0007] The upper hinge seat has an arc-shaped guide groove, and the inner side of the lower hinge seat has a self-locking sleeve. A self-locking pin that passes through the arc-shaped guide groove is slidably inserted into the self-locking sleeve. A spring that is sleeved on the self-locking pin is provided inside the self-locking sleeve. The outer ring of the spring can slide on the inner wall of the lower hinge seat, and the inner ring of the spring can slide on the outer circle of the self-locking pin. One end of the arc-shaped guide groove has a circular positioning hole that cooperates with the self-locking pin.
[0008] Preferably, a shaft elastic retaining ring is sleeved at the end of the pin.
[0009] Preferably, the trajectory of the self-locking pin rotating around the pin shaft is adapted to the curvature of the arc-shaped guide groove.
[0010] Preferably, a self-locking retaining ring is fixedly installed at the tail end of the self-locking pin by a cotter pin.
[0011] Preferably, the self-locking pin has a pressing plate at its front end, and a positioning sleeve is provided on the side of the self-locking pin near the pressing plate, with an annular clearance groove formed between the positioning sleeve and the pressing plate.
[0012] Preferably, the diameter of the annular clearance groove of the self-locking pin is smaller than the width of the arc-shaped guide groove, the inner hole of the positioning sleeve is larger than the width of the arc-shaped guide groove, the width of the arc-shaped guide groove is smaller than the diameter of the circular positioning hole, and the width of the annular clearance groove is larger than the thickness of the side of the upper hinge seat.
[0013] Secondly, this utility model proposes a vertical color mixing machine, including a safety bucket lid hinge structure as described in any one of the above.
[0014] Compared with the prior art, the beneficial effects of this utility model are:
[0015] This invention uses a pin to rotatably connect the upper hinge seat and the lower hinge seat. When the lid needs to be opened, simply loosen the latch, pull up the lid, and the upper hinge seat rotates around the pin along the arc-shaped guide groove. At the same time, the arc-shaped guide groove slides along the self-locking pin. When the lid is fully opened, the circular positioning hole at the end of the arc-shaped guide groove aligns with the self-locking pin. Then, the self-locking pin pops out under the action of a spring. Through the cooperation of the self-locking pin and the circular positioning hole, the upper hinge seat and the lower hinge seat are fixedly locked, preventing the lid from continuing to rotate. This avoids the risk of workplace accidents caused by the lid closing automatically. At this time, it is safe to add, discharge, clean, or perform maintenance operations. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the overall main structure of this utility model;
[0017] Figure 2 for Figure 1 Schematic diagram of the AA section structure;
[0018] Figure 3 This is a schematic diagram of the internal structure of the safety bucket lid hinge of this utility model;
[0019] Figure 4 This is a schematic diagram of the safety bucket lid hinge structure in the open state of this utility model;
[0020] Figure 5 This is a schematic diagram of the safety bucket lid hinge structure in the closed state.
[0021] In the diagram: 1. Barrel body; 2. Safety barrel lid hinge; 3. Barrel lid; 4. Upper hinge seat; 5. Pin; 6. Self-locking pin; 7. Lower hinge seat; 8. Spring; 9. Cotter pin; 10. Self-locking retaining ring; 11. Self-locking sleeve; 12. Shaft elastic retaining ring. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0023] Example 1
[0024] Please see Figure 1-5 This utility model provides a technical solution: a safety bucket lid hinge structure, including a safety bucket lid hinge 2 assembled between a bucket body 1 and a bucket lid 3. The safety bucket lid hinge 2 includes a lower hinge seat 7 disposed on the bucket body 1 and an upper hinge seat 4 disposed on the bucket lid 3. The upper hinge seat 4 and the lower hinge seat 7 are rotatably connected by a pin 5. The upper hinge seat 4 can rotate around the pin 5 to realize the opening and closing of the bucket lid 3.
[0025] An arc-shaped guide groove is provided on the upper hinge seat 4, and a self-locking sleeve 11 is provided on the inner side of the lower hinge seat 7. A self-locking pin 6 that passes through the arc-shaped guide groove is slidably inserted into the self-locking sleeve 11. A spring 8 is provided inside the self-locking sleeve 11 and sleeved on the self-locking pin 6. The outer ring of the spring 8 can slide on the inner wall of the lower hinge seat 7, and the inner ring of the spring 8 can slide on the outer circle of the self-locking pin 6. A circular positioning hole that mates with the self-locking pin 6 is provided at one end of the arc-shaped guide groove. The upper hinge seat 4 is fixedly installed on the bucket lid 3, and the lower hinge seat 7 is fixed on the bucket body 1. The upper hinge seat 4 and the lower hinge seat 7 are rotatably connected together by a pin 5. At the same time, the safety bucket lid hinge 2 is closed. When in the compressed state, spring 8 is in the compressed state. When it is necessary to open the lid 3, simply release the latch and pull up the lid 3. The upper hinge seat 4 rotates around the pin 5 along the arc-shaped guide groove. At the same time, the arc-shaped guide groove slides along the self-locking pin 6. When the lid 3 is fully opened, the circular positioning hole at the end of the arc-shaped guide groove aligns with the self-locking pin 6. Then, the self-locking pin 6 pops out under the action of spring 8. Through the cooperation of the self-locking pin 6 and the circular positioning hole, the upper hinge seat 4 and the lower hinge seat 7 are fixedly locked, preventing the lid 3 from continuing to rotate. This avoids the risk of work-related accidents caused by the automatic closing of the lid 3. At this time, it is safe to add, discharge, clean or maintain materials.
[0026] Preferably, a shaft elastic retaining ring 12 is sleeved at the end of the pin 5 to prevent the pin 5 from coming out.
[0027] Preferably, the movement trajectory of the self-locking pin 6 rotating around the pin shaft 5 is adapted to the curvature of the arc-shaped guide groove. When the bucket lid 3 is opened, the upper hinge seat 4 rotates synchronously with the bucket lid 3. At the same time, the upper hinge seat 4 rotates around the pin shaft 5. During the rotation of the upper hinge seat 4, the arc-shaped guide groove slides along the self-locking pin 6.
[0028] Preferably, a self-locking retaining ring 10 is fixedly installed at the tail end of the self-locking pin 6 by a cotter pin 9 to prevent the self-locking pin 6 from loosening during reciprocating motion.
[0029] Preferably, the self-locking pin 6 has a pressing plate at its front end, and a positioning sleeve is provided on the side of the self-locking pin 6 near the pressing plate. An annular clearance groove is formed between the positioning sleeve and the pressing plate. The diameter of the annular clearance groove of the self-locking pin 6 is smaller than the width of the arc-shaped guide groove. The inner hole of the positioning sleeve is larger than the width of the arc-shaped guide groove. The width of the arc-shaped guide groove is smaller than the diameter of the circular positioning hole. The width of the annular clearance groove is larger than the thickness of the side of the upper hinge seat 4. When the safety lid hinge 2 is in the closed state, the annular clearance groove is aligned with the arc-shaped guide groove on the side of the upper hinge seat 4. In this way, when the lid 3 is opened, the upper hinge seat 4 can rotate around the pin 5, while ensuring that the self-locking pin 6 can rotate relative to the arc-shaped guide groove.
[0030] Example 2
[0031] Please see Figure 1 This utility model provides a vertical color mixing machine, including a barrel body 1, a barrel lid 3 disposed on the barrel body 1, and a safety barrel lid hinge 2 assembled between the barrel body 1 and the barrel lid 3. The safety barrel lid hinge 2 includes a lower hinge seat 7 disposed on the barrel body 1 and an upper hinge seat 4 disposed on the barrel lid 3. The upper hinge seat 4 and the lower hinge seat 7 are rotatably connected by a pin 5. The upper hinge seat 4 can rotate around the pin 5 to realize the opening and closing of the barrel lid 3.
[0032] Working principle: When using, combine Figure 1 and Figure 4 When the lid 3 needs to be opened, simply loosen the latch, pull up the lid 3, and the upper hinge seat 4 rotates around the pin 5 along the arc-shaped guide groove. At the same time, the arc-shaped guide groove slides along the self-locking pin 6. When the lid 3 is fully opened, the circular positioning hole at the end of the arc-shaped guide groove aligns with the self-locking pin 6. Then, the self-locking pin 6 pops out under the action of the spring 8. Through the cooperation of the self-locking pin 6 and the circular positioning hole, the upper hinge seat 4 and the lower hinge seat 7 are fixedly locked, preventing the lid 3 from continuing to rotate, thereby avoiding the risk of workplace accidents caused by the automatic closing of the lid 3.
[0033] Combination Figure 1 and Figure 5When it is necessary to close the lid 3, gently press the self-locking pin 6 with the pressing plate to align the annular clearance groove with the arc-shaped guide groove on the side of the upper hinge seat 4, and then slowly lower the lid 3 to close it.
[0034] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
Claims
1. A safety bucket lid hinge structure comprising a safety bucket lid hinge (2) assembled between a bucket body (1) and a bucket lid (3), characterized in that: The safety type bucket cover hinge (2) comprises a lower hinge seat (7) arranged on a bucket body (1) and an upper hinge seat (4) arranged on a bucket cover (3), the upper hinge seat (4) is rotationally connected with the lower hinge seat (7) through a pin shaft (5), and the upper hinge seat (4) can rotate around the pin shaft (5) to realize opening and closing of the bucket cover (3); An arc-shaped guide groove is formed in the upper hinge seat (4), a self-locking positioning sleeve (11) is arranged on the inner side of the lower hinge seat (7), a self-locking positioning pin (6) penetrating through the arc-shaped guide groove is slidingly inserted into the self-locking positioning sleeve (11), a spring (8) is arranged in the self-locking positioning sleeve (11) and sleeved on the self-locking positioning pin (6), the outer ring of the spring (8) can slide on the inner wall of the lower hinge seat (7), the inner ring of the spring (8) can slide on the outer circle of the self-locking positioning pin (6), and one end of the arc-shaped guide groove is provided with a circular positioning hole matched with the self-locking positioning pin (6).
2. The safety bucket cover hinge structure according to claim 1, wherein: The pin shaft (5) is sleeved with an elastic shaft baffle (12) at the end.
3. The safety bucket cover hinge structure according to claim 1, wherein: The movement track of the self-locking positioning pin (6) rotating around the pin shaft (5) is matched with the arc of the arc-shaped guide groove.
4. The safety bucket cover hinge structure according to claim 1, wherein: The tail end of the self-locking positioning pin (6) is fixedly provided with a self-locking positioning baffle (10) through a split pin (9).
5. The safety bucket cover hinge structure according to claim 1, wherein: The front end of the self-locking positioning pin (6) is provided with a pressing disc, one side of the self-locking positioning pin (6) close to the pressing disc is provided with a positioning sleeve, and an annular avoiding groove is formed between the positioning sleeve and the pressing disc.
6. The safety bucket lid hinge structure according to claim 5, wherein: The diameter size of the annular avoiding groove of the self-locking positioning pin (6) is smaller than the width size of the arc-shaped guide groove, the inner hole size of the positioning sleeve is greater than the width size of the arc-shaped guide groove, the width size of the arc-shaped guide groove is smaller than the diameter size of the circular positioning hole, and the width size of the annular avoiding groove is greater than the thickness size of the side edge of the upper hinge seat (4).
7. A vertical color mixer characterized by comprising: The safety type bucket cover hinge structure comprises the safety type bucket cover hinge structure according to any one of claims 1-6.