A plastic bucket injection molding equipment with quick mold changing

Abstract

The utility model discloses a kind of plastic bucket injection molding equipment of quick die change, it is related to plastic bucket processing technical field, the utility model discloses a kind of plastic bucket injection molding equipment of quick die change, including base and rack, rack is fixedly installed at the top of base, the top of base is separated into injection molding area and extrusion molding area by rack, extrusion molding area is provided with forming part, injection molding area is provided with injection molding part, the inside of rack is provided with convenient replacement part, forming part includes electric push rod, electric push rod is fixedly installed in the middle part of rack, the driving end of electric push rod is fixedly connected with movable piece, the inside of rack four corner position is all fixedly connected with guide rod;Through the linkage structure of convenient replacement part's stepper motor, arc hole disc, sleeve rod and clamping plate, the quick clamping and disassembly of mould two are realized, only through arc hole disc forward and reverse rotation can complete the fixation and unlocking of mould, shorten die changing time, improve the forming qualified rate of plastic bucket.

Description

Technical Field

[0001] This utility model relates to the field of plastic bucket processing technology, and in particular to a plastic bucket injection molding equipment with quick mold change. Background Technology

[0002] Injection molding machines are capable of molding complex-shaped, precisely dimensional, or dense plastic products with metal inserts in a single process. Using the thrust of a screw or plunger, pre-plasticized molten plastic (a viscous flow state) is injected into a closed mold cavity, where it solidifies and sets to obtain the finished product. Traditional plastic bucket injection molding equipment typically involves spraying raw material through a nozzle to form the plastic bucket.

[0003] Chinese Patent Publication No. CN219276456U discloses an injection molding device for processing plastic buckets, including a support plate. A box is fixedly connected to the upper surface of the support plate, and a lower mold is fixedly connected to the upper surface of the support plate. Multiple connecting rods are fixedly connected to the bottom surface of the support plate, and a refrigeration box is fixedly connected to the bottom end of each connecting rod. A protective frame and multiple coolers are fixedly connected to the bottom surface of the refrigeration box, and a submersible pump is fixedly connected to the inner bottom wall of the refrigeration box. This device uses an electric push rod to drive the upper mold to compress the lower mold, thereby extruding and forming the plastic bucket. During the plastic bucket forming process, the submersible pump draws water cooled by the coolers in the refrigeration box into the lower mold through a water pipe, allowing the cooled water to quickly cool, solidify, and shape the unformed plastic bucket. This reduces the waiting time for cooling during the plastic bucket production process and effectively increases the production efficiency of plastic buckets.

[0004] The existing technology has the following problems:

[0005] Existing injection molding equipment has shortcomings in terms of mold closing accuracy and raw material sealing protection: On the one hand, the mold alignment lacks precise guidance and positioning structure, which can easily lead to misalignment during mold closing, resulting in uneven wall thickness of the plastic bucket and making it difficult to guarantee molding accuracy. On the other hand, the docking structure of the raw material injection channel is not reasonably designed and has poor sealing performance. When injecting molten raw material under high pressure, raw material leakage is likely to occur, which not only wastes raw materials and contaminates the equipment, but also affects the molding qualification rate of the plastic bucket. Utility Model Content

[0006] This invention provides a quick-change injection molding equipment for plastic buckets to solve the problems mentioned in the background art.

[0007] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0008] A quick-change plastic bucket injection molding equipment includes a base and a frame. The frame is fixedly installed on the top of the base. The top of the base is divided into an injection molding area and an extrusion molding area by the frame. The extrusion molding area is provided with a molding part, and the injection molding area is provided with an injection molding part. The frame is provided with a convenient replacement part inside.

[0009] The forming part includes an electric push rod, which is fixedly installed in the middle of the frame. The drive end of the electric push rod is fixedly connected to a movable part. Guide rods are fixedly connected at the four corners of the inside of the frame. The movable part is slidably connected to the outer wall of the guide rod.

[0010] The injection molding section includes a material tank, which is located above the base on the side away from the frame, and an injection pipe is fixedly installed at the bottom of the material tank;

[0011] The convenient replacement part includes a disc, which is fixedly installed in the middle of the movable part, and a stepper motor is fixedly installed inside the movable part.

[0012] Preferably, the forming part further includes a first mold, which is snapped onto the middle of the side of the frame away from the electric push rod, and a second mold is provided on the side of the disc near the first mold, with the center of the second mold and the center of the first mold located on the same straight line.

[0013] Preferably, the injection molding part further includes a sliding member, which is slidably connected to the top of the base and fixedly connected to the material tank. A pneumatic mechanism is provided in the middle of the base, and the driving end of the pneumatic mechanism is fixedly connected to the sliding member.

[0014] Preferably, a connector is provided through the side of the frame away from the electric push rod, and a docking hole is provided in the middle of the connector, and the docking hole is on the same straight line as the injection pipe.

[0015] Preferably, the mating hole is connected to the inner wall of the mold, and a sealing ring is fixedly connected to the middle of the connector, the sealing ring covering the outer wall of the connection end between the connector and the mold.

[0016] Preferably, the convenient replacement part further includes an arc-shaped perforated plate, which is rotatably connected to the inner side of the disc. A number of sleeve rods are slidably connected around the inner wall of the arc-shaped perforated plate. A connecting plate is fixedly connected to the inner end of each sleeve rod. A clamping plate is fixedly connected to the end of each connecting plate away from the sleeve rod. The clamping plates are all attached to the outer wall of the mold.

[0017] Preferably, the inner side of the disc has several horizontal holes around its circumference, and the outer wall of the sleeve is slidably connected to the inner wall of the horizontal holes.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] This utility model provides a plastic bucket injection molding equipment with rapid mold change. Through the linkage structure of the stepper motor, arc-shaped perforated plate, sleeve rod and clamping plate of the convenient replacement part, the quick clamping and disassembly of the mold is realized. There is no need to remove the bolts when changing the mold. The mold can be fixed and unlocked by simply rotating the arc-shaped perforated plate in both directions. This shortens the mold change time and solves the problems of cumbersome mold change and low efficiency of traditional injection molding equipment. It meets the needs of rapid production change of plastic buckets of various specifications and improves the production flexibility and adaptability of the equipment.

[0020] This utility model provides a quick-change injection molding equipment for plastic buckets. Through multiple precise positioning and sealing designs, it ensures the injection molding quality and material utilization rate. The collinear design of mold one and mold two, and the guiding effect of the guide rod on the moving parts, ensure the mold closing accuracy and make the plastic bucket wall thickness uniform. The pneumatic mechanism drives the material tank to accurately connect with the connecting parts. With the double sealing effect of the sealing ring, it avoids the leakage problem of molten material during high-pressure injection, which reduces material waste, ensures the cleanliness of the equipment, and improves the molding qualification rate of plastic buckets. Attached Figure Description

[0021] Figure 1 This is a three-dimensional schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a top view of the overall structure of this utility model;

[0023] Figure 3 This is a rear view schematic diagram of the overall structure of this utility model;

[0024] Figure 4 This is a schematic diagram of the connecting component structure of this utility model;

[0025] Figure 5 This is a schematic diagram of the internal structure of the frame of this utility model;

[0026] Figure 6 for Figure 5 Enlarged diagram of point A in the middle.

[0027] In the diagram: 1. Base; 2. Frame;

[0028] The molding section includes: 31. Electric push rod; 32. Moving part; 33. Guide rod; 34. Mold one; 35. Mold two;

[0029] The injection molding section includes: 41. Material tank; 42. Injection pipe; 43. Sliding component; 44. Pneumatic mechanism; 45. Connecting component; 46. Butt hole; 47. Sealing ring;

[0030] The easy-to-replace part includes: 51, disc; 52, stepper motor; 53, arc-shaped perforated disc; 54, sleeve rod; 55, connecting plate; 56, clamping plate; 57, horizontal hole. Detailed Implementation

[0031] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0032] like Figure 1 - Figure 6 As shown, a quick mold change plastic bucket injection molding equipment includes a base 1 and a frame 2. The frame 2 is fixedly installed on the top of the base 1. The top of the base 1 is divided into an injection molding area and an extrusion molding area by the frame 2. The extrusion molding area is provided with a molding part, and the injection molding area is provided with an injection part. The inside of the frame 2 is provided with a convenient replacement part.

[0033] The molding section includes an electric push rod 31, which is fixedly installed in the middle of the frame 2. The drive end of the electric push rod 31 is fixedly connected to a movable part 32. Guide rods 33 are fixedly connected at the four corners inside the frame 2. The movable part 32 is slidably connected to the outer wall of the guide rod 33.

[0034] The injection molding section includes a material tank 41, which is located above the base 1 on the side away from the frame 2, and an injection pipe 42 is fixedly installed at the bottom of the material tank 41.

[0035] The easy-to-replace part includes a disc 51, which is fixedly installed in the middle of the movable part 32. A stepper motor 52 is fixedly installed inside the movable part 32.

[0036] It should be noted that this equipment provides stable support through the base 1, and the frame 2 serves as the core mounting frame, dividing the equipment into an injection molding area and an extrusion molding area, realizing an integrated process of raw material injection, extrusion molding, and mold replacement. The molding section is responsible for the extrusion and shaping of the plastic bucket, the injection molding section completes the precise injection of molten raw materials, and the convenient replacement section solves the problem of cumbersome mold replacement in traditional equipment. The three parts work together precisely through the mechanical structure to ensure the continuous and efficient operation of the equipment.

[0037] like Figure 1 , Figure 2 , Figure 4 , Figure 5 As shown, the molding part also includes a first mold 34, which is snapped onto the middle of the side of the frame 2 away from the electric push rod 31. A second mold 35 is provided on the side of the disc 51 near the first mold 34, and the center of the second mold 35 and the first mold 34 are on the same straight line.

[0038] It should be noted that mold 1 34 is fixed to one side of the frame 2 by snap-fit, and its position remains fixed. It serves as a fixed mold cavity for molding plastic buckets. Mold 2 35 is mounted on the disc 51 and moves synchronously with the movable part 32. When the equipment starts molding, the electric push rod 31 extends after receiving the drive signal, pushing the movable part 32 to slide along the guide rod 33 towards mold 1 34 (the guide rod 33 ensures that the movement trajectory of the movable part 32 is accurate and avoids deviation) until mold 2 35 and mold 1 34 are completely fitted together to form a closed injection mold cavity, providing a stable space for subsequent raw material injection and extrusion molding. The design of the two being collinear ensures that the plastic bucket wall thickness is uniform and the molding accuracy meets the standards.

[0039] like Figure 1 , Figure 3 As shown, the injection molding part also includes a sliding member 43, which is slidably connected to the top of the base 1 and fixedly connected to the material tank 41. A pneumatic mechanism 44 is provided in the middle of the base 1, and the driving end of the pneumatic mechanism 44 is fixedly connected to the sliding member 43.

[0040] It should be noted that the material tank 41 is used to store molten plastic raw materials, and the injection pipe 42 is the material delivery channel. Before injection molding, the pneumatic mechanism 44 is activated, and its driving end pushes the sliding member 43 to slide along the slide rail on the top of the base 1 (the sliding member 43 is fixedly connected to the material tank 41 and drives the material tank 41 to move synchronously) until the injection pipe 42 and the docking hole 46 of the connector 45 are precisely aligned, realizing the rapid docking of the injection channel. The driving method of the pneumatic mechanism 44 is responsive and has stable thrust, which can ensure the alignment accuracy of the injection pipe 42 and the docking hole 46 and avoid leakage during material injection.

[0041] like Figure 3 , Figure 4 As shown, a connector 45 is provided through the side of the frame 2 away from the electric push rod 31. A docking hole 46 is provided in the middle of the connector 45. The docking hole 46 and the injection pipe 42 are on the same straight line.

[0042] It should be noted that the connector 45 penetrates the frame 2 and is fixedly connected to the mold 34. The mating hole 46 on the connector is the key channel for the raw material to enter the mold cavity from the injection pipe 42. When the sliding member 43 moves the material tank 41 to the designated position, the outlet end of the injection pipe 42 is inserted into the mating hole 46. Since the two are pre-designed to be on the same straight line, a deviation-free connection can be achieved. At the same time, the sealing ring 47 in the middle of the connector 45 is tightly fitted to the outer wall of the connection end between the connector 45 and the mold 34. After the injection pipe 42 is inserted into the mating hole 46, the sealing ring 47 can also fill the gap between the injection pipe 42 and the mating hole 46. The double sealing design effectively prevents leakage of molten raw material during high-pressure injection, ensuring the utilization rate of raw materials and the cleanliness of the equipment.

[0043] like Figure 4 , Figure 5 As shown, the mating hole 46 is connected to the inner wall of the mold 34, and a sealing ring 47 is fixedly connected to the middle of the connecting piece 45. The sealing ring 47 covers the outer wall of the connecting end of the connecting piece 45 and the mold 34.

[0044] It should be noted that the fixing and replacement of mold 2 35 is achieved through the linkage of the arc-shaped perforated plate 53, the sleeve rod 54, and the clamping plate 56. When installing mold 2 35, the stepper motor 52 drives the arc-shaped perforated plate 53 to rotate clockwise. The inner wall of the arc-shaped perforated plate 53 has an inclined guide structure. When rotating, it will generate a centripetal thrust on the sleeve rod 54, causing the sleeve rod 54 to slide inward along the transverse hole 57 of the disc 51. Then, through the connecting plate 55, it drives the clamping plate 56 to move towards the center synchronously until the clamping plate 56 is tightly attached to the mold. The outer wall of mold 2 35 securely fixes mold 2 35. When mold 2 35 needs to be replaced, stepper motor 52 drives arc-shaped hole plate 53 to rotate counterclockwise. The centripetal thrust of arc-shaped hole plate 53 on sleeve rod 54 disappears. Under the action of its own return spring (not marked in the figure, built into the horizontal hole 57), sleeve rod 54 slides outward along the horizontal hole 57. Clamping plate 56 disengages from mold 2 35. At this time, the old mold can be directly removed and a new mold can be replaced. The whole process does not require disassembling bolts, which greatly shortens the mold replacement time.

[0045] like Figure 5 , Figure 6 As shown, the easy-to-replace part also includes an arc-shaped perforated plate 53, which is rotatably connected to the inner side of the disc 51. Several sleeve rods 54 are slidably connected around the inner wall of the arc-shaped perforated plate 53. A connecting plate 55 is fixedly connected to the inner end of each sleeve rod 54. A clamping plate 56 is fixedly connected to the end of each connecting plate 55 away from the sleeve rod 54. The clamping plates 56 are attached to the outer wall of the mold 35. Several horizontal holes 57 are opened around the inner side of the disc 51. The outer wall of the sleeve rod 54 is slidably connected to the inner wall of the horizontal hole 57.

[0046] It should be noted that the transverse holes 57 on the inner side of the disc 51 correspond one-to-one with the sleeve rod 54. The inner wall of the transverse hole 57 is precision machined to fit with the outer wall of the sleeve rod 54 with a clearance. When the sleeve rod 54 moves under the drive of the arc-shaped perforated disc 53, the transverse holes 57 provide precise linear guidance for the sleeve rod 54, preventing the sleeve rod 54 from shifting or jamming, ensuring that the clamping force of the clamping plate 56 on the mold 35 is evenly distributed, and at the same time ensuring the positional stability of the mold 35 during the extrusion molding process, preventing defects in the plastic bucket molding caused by mold loosening.

[0047] The working principle of this utility model:

[0048] Before starting the equipment, the mold 2 35 is fixedly installed through the convenient disassembly and replacement part. The stepper motor 52 drives the arc-shaped perforated plate 53 to rotate clockwise. The inclined inner wall of the arc-shaped perforated plate 53 generates a centripetal thrust on the sleeve rod 54, causing the sleeve rod 54 to slide inward along the transverse hole 57 on the disc 51. Then, through the connecting plate 55, the clamping plate 56 moves closer synchronously until the clamping plate 56 is tightly attached to the outer wall of the mold 2 35, thus completing the firm fixation of the mold 2 35. At the same time, the mold 1 34 is pre-fixed in the designated position of the frame 2 by snap-fit, and the centers of the mold 1 34 and the mold 2 35 are kept collinear to ensure the subsequent mold closing accuracy.

[0049] Before injection molding, the pneumatic mechanism 44 is activated, and its drive end pushes the sliding part 43 to slide along the top slide rail of the base 1. The material tank 41, which is fixedly connected to the sliding part 43, moves synchronously until the injection pipe 42 at the bottom of the material tank 41 is precisely aligned with the docking hole 46 opened by the connector 45 on the frame 2. At this time, the sealing ring 47 on the connector 45 tightly fills the connection gap between the injection pipe 42 and the docking hole 46, and between the connector 45 and the mold 34, forming a sealed channel to prevent the molten material from leaking.

[0050] After the injection channel is sealed, the electric push rod 31 of the molding section extends and pushes the movable part 32 to slide smoothly along the guide rods 33 at the four corners of the frame 2 toward the mold 1 34 until the mold 2 35 is completely attached to the mold 1 34 to form a closed injection cavity. Then, the molten plastic material in the material tank 41 is precisely injected into the mold cavity through the injection pipe 42 and the docking hole 46 under pressure. The electric push rod 31 continuously provides stable extrusion pressure to ensure that the material fully fills the mold cavity and adheres to the inner wall of the mold. After the material cools and solidifies, the plastic bucket molding is completed.

[0051] After the plastic bucket has solidified, the electric push rod 31 retracts, causing the movable part 32 and mold two 35 to return to their original positions along the guide rod 33, separating mold one 34 from mold two 35. At this point, the operator can directly remove the molded plastic bucket from mold one 34, and the equipment enters the next production cycle.

[0052] When producing plastic buckets of different specifications, there is no need to disassemble the main structure of the equipment. Simply control the stepper motor 52 to drive the arc-shaped perforated plate 53 to rotate counterclockwise. The centripetal thrust of the arc-shaped perforated plate 53 on the sleeve rod 54 disappears, and the sleeve rod 54 slides outward under the action of the unmarked return spring inside the transverse hole 57. The clamping plate 56 disengages from the mold 2 35, and the old mold can be quickly removed. After replacing the mold 2 35 with the new specification, repeat the mold fixing process in step one. At the same time, ensure that the new mold and the center of mold 1 34 are collinear to complete the mold change and shorten the production changeover time.

[0053] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A quick-change plastic bucket injection molding equipment, comprising a base (1) and a frame (2), wherein the frame (2) is fixedly installed on the top of the base (1), and the top of the base (1) is divided into an injection molding area and an extrusion molding area by the frame (2), characterized in that: The extrusion molding area is provided with a molding part, the injection molding area is provided with an injection molding part, and the frame (2) is provided with a convenient replacement part inside; The forming part includes an electric push rod (31), which is fixedly installed in the middle of the frame (2). The driving end of the electric push rod (31) is fixedly connected to a movable part (32). Guide rods (33) are fixedly connected at the four corners of the frame (2). The movable part (32) is slidably connected to the outer wall of the guide rod (33). The injection molding unit includes a material tank (41), which is located above the base (1) on the side away from the frame (2), and an injection pipe (42) is fixedly installed at the bottom of the material tank (41). The convenient replacement part includes a disc (51), which is fixedly installed in the middle of the movable part (32), and a stepper motor (52) is fixedly installed inside the movable part (32).

2. The quick-change plastic bucket injection molding equipment according to claim 1, characterized in that: The forming part also includes a first mold (34), which is snapped onto the middle of the side of the frame (2) away from the electric push rod (31). A second mold (35) is provided on the side of the disc (51) near the first mold (34). The center of the second mold (35) and the first mold (34) are on the same straight line.

3. The quick-change plastic bucket injection molding equipment according to claim 1, characterized in that: The injection molding part also includes a sliding member (43), which is slidably connected to the top of the base (1) and fixedly connected to the material tank (41). A pneumatic mechanism (44) is provided in the middle of the base (1), and the driving end of the pneumatic mechanism (44) is fixedly connected to the sliding member (43).

4. The quick-change plastic bucket injection molding equipment according to claim 3, characterized in that: A connector (45) is provided through the side of the frame (2) away from the electric push rod (31). A docking hole (46) is provided in the middle of the connector (45). The docking hole (46) and the injection pipe (42) are located on the same straight line.

5. The quick-change plastic bucket injection molding equipment according to claim 4, characterized in that: The docking hole (46) is connected to the inner wall of the mold (34), and a sealing ring (47) is fixedly connected to the middle of the connector (45). The sealing ring (47) covers the outer wall of the connection end between the connector (45) and the mold (34).

6. The quick-change plastic bucket injection molding equipment according to claim 1, characterized in that: The convenient replacement part also includes an arc-shaped perforated plate (53), which is rotatably connected to the inner side of the disc (51). A number of sleeve rods (54) are slidably connected around the inner wall of the arc-shaped perforated plate (53). A connecting plate (55) is fixedly connected to the inner end of each sleeve rod (54). A clamping plate (56) is fixedly connected to the end of each connecting plate (55) away from the sleeve rod (54). The clamping plate (56) is attached to the outer wall of the mold (35).

7. The quick-change plastic bucket injection molding equipment according to claim 6, characterized in that: The inner side of the disc (51) is provided with several horizontal holes (57), and the outer wall of the sleeve (54) is slidably connected to the inner wall of the horizontal holes (57).

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