Combined plastic cylinder rotational molding mold

Abstract

The utility model relates to the technical field of molds, in particular to a combined plastic barrel rotational molding mold which comprises shell assemblies, a rotating shaft is arranged between the shell assemblies through bearings, a fixing seat is arranged outside the rotating shaft, and the improved combined plastic barrel rotational molding mold is matched with a liquid inlet through a connecting valve, a connecting pipe and the liquid inlet. According to the combined plastic barrel rotational molding mold, after the combined plastic barrel rotational molding mold is used, a plastic barrel in the rotational molding mold is rapidly cooled, the cooling efficiency of the plastic barrel is greatly improved, the problem that the natural cooling period of the plastic barrel is long is solved, and therefore the production efficiency of the plastic barrel is greatly improved; after the combined type plastic barrel rotational molding mold is used, the rotational molding mold can be turned left and right in the plastic barrel raw material processing period, the uniformity of the plastic barrel raw materials in the rotational molding mold is greatly improved when the plastic barrel raw materials are processed, and therefore the working efficiency is improved, and the requirements of the combined type plastic barrel rotational molding mold are met.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to a combined plastic cylinder rotational molding mold. Background Art

[0002] Plastic barrels are mostly made of polyethylene, polypropylene and other plastics by blow molding and injection molding. They are the outer packaging of liquid and solid items in the chemical, pesticide, pharmaceutical, food, hardware and electronics, electromechanical and other industries. During the production and processing of plastic barrels, they need to be processed by a variety of auxiliary devices. Among them, rotational molding is an important processing link for processing plastic barrel raw materials into plastic barrel finished products. Therefore, plastic barrel rotational molding is indispensable during the processing of plastic barrels.

[0003] An existing patent (publication number: CN217752382U) discloses a rotational molding mold comprising an upper mold and a lower mold. One of the upper mold and the lower mold comprises a first mold body, which is provided with a first shell portion. The inner side of the first shell portion forms a first cavity, which is used to form the mounting ears of the plastic part. The mold body also comprises a first mold frame, which is used to mount the first mold body. The first mold frame comprises a frame, a vertical plate provided on one side of the frame, a crossbar extending through the vertical plate, and a vertical bar connecting one end of the crossbar. The other end of the crossbar extends through the first shell portion. The crossbar is used to form the mounting holes for the mounting ears of the plastic part. The rotational molding mold of this utility model can conveniently form the mounting holes, eliminating machining work. In the process of realizing the present invention, the inventors found that the existing technology has the following problems: 1. After the traditional rotational molding mold completes the processing of the plastic tube, it mostly adopts a natural cooling method. This cooling method not only has low cooling efficiency, but also has a relatively long cooling cycle, thereby greatly reducing the production efficiency of the plastic tube; 2. During the processing of the plastic tube raw material, the traditional rotational molding mold usually rotates the mold horizontally and cannot flip the mold back and forth left and right, resulting in the need to extend the processing time of the plastic tube raw material inside the mold, thereby greatly reducing the work efficiency during the processing of the plastic tube raw material. Utility Model Content

[0004] The purpose of the present utility model is to provide a combined plastic cylinder rotational molding mold to solve the problem mentioned in the above background technology that after the traditional rotational molding mold is finished processing the plastic cylinder, most of them adopt a natural cooling method. This cooling method not only has low cooling efficiency, but also has a relatively long cooling cycle, thereby greatly reducing the production efficiency of the plastic cylinder. In addition, during the processing of the plastic cylinder raw material, the traditional rotational molding mold usually rotates the mold horizontally and cannot be flipped back and forth left and right, thereby greatly reducing the working efficiency during the processing of the plastic cylinder raw material.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a combined plastic cylinder rotational molding mold, comprising a shell assembly, a rotating shaft is arranged between the shell assemblies through bearings, a fixed seat is arranged on the outside of the rotating shaft, a mounting plate is arranged at the top of the fixed seat, mounting seats are arranged on both sides of the middle part of the top of the mounting plate, a lower mold is arranged between the two mounting seats through bearings, an upper mold is arranged at the top of the lower mold, a servo motor is arranged on one side of the mounting seat, a connecting pipe is arranged inside one end of the lower mold, a connecting valve is arranged at one end of the connecting pipe, a liquid inlet is arranged at the top of the connecting valve, a first one-way valve is arranged on the outside of the liquid inlet, a liquid pump is arranged on one side of the top of the mounting plate, a liquid pipe is arranged at the top of the liquid pump, and a second one-way valve is arranged on the outside of the liquid pipe.

[0006] Further preferably, the housing assembly includes a base, a fixing plate is provided on both sides of the top of the base, and a motor is provided on one side of the fixing plate.

[0007] Further preferably, the central axis of the motor is consistent with the central axis of the rotating shaft.

[0008] Further preferably, springs are provided at the four corners of the top of the base.

[0009] Further preferably, the central axis of the servo motor is consistent with the central axis of the lower mold.

[0010] Further preferably, the connecting pipe and the lower mold are configured to be movably connected.

[0011] Further preferably, the liquid pump is connected to the connecting valve through a liquid pipe.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] In the utility model, by cooperating with the connecting valve, the connecting pipe and the liquid inlet, the combined plastic cylinder rotational molding mold can realize rapid cooling of the plastic cylinder in the rotational molding mold after use, greatly improving the cooling efficiency of the plastic cylinder, solving the problem of long natural cooling cycle of the plastic cylinder, and thus greatly improving the production efficiency of the plastic cylinder.

[0014] In the utility model, through the cooperation of the motor, the rotating shaft and the fixed seat, the combined plastic cylinder rotational molding mold can be turned left and right during the processing of the plastic cylinder raw material after use, thereby greatly improving the uniformity of the plastic cylinder raw material during processing inside the rotational molding mold, thereby increasing work efficiency and meeting the requirements of the combined plastic cylinder rotational molding mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the front view structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of the utility model;

[0017] Figure 3 This is a schematic diagram of the top view of the structure of the utility model;

[0018] Figure 4 It is a side view structural diagram of the utility model.

[0019] In the figure: 1. Housing assembly; 101. Base; 102. Fixing plate; 103. Motor; 2. Rotating shaft; 3. Fixing seat; 4. Mounting plate; 5. Mounting seat; 6. Lower mold; 7. Upper mold; 8. Servo motor; 9. Connecting pipe; 10. Connecting valve; 11. Liquid inlet; 12. First one-way valve; 13. Liquid pump; 14. Liquid pipe; 15. Second one-way valve. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technical personnel in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0021] See also Figures 1 to 4 The utility model provides a technical solution: a combined plastic cylinder rotational molding mold, comprising a shell component 1, a rotating shaft 2 is arranged between the shell components 1 through a bearing, a fixed seat 3 is arranged on the outside of the rotating shaft 2, a mounting plate 4 is arranged on the top of the fixed seat 3, and mounting seats 5 are arranged on both sides of the middle part of the top of the mounting plate 4, a lower mold 6 is arranged between the two mounting seats 5 through a bearing, an upper mold 7 is arranged on the top of the lower mold 6, a servo motor 8 is arranged on one side of the mounting seat 5, a connecting pipe 9 is arranged inside one end of the lower mold 6, a connecting valve 10 is arranged at one end of the connecting pipe 9, a liquid inlet 11 is arranged on the top of the connecting valve 10, a first one-way valve 12 is arranged on the outside of the liquid inlet 11, a liquid pump 13 is arranged on one side of the top of the mounting plate 4, a liquid pipe 14 is arranged on the top of the liquid pump 13, and a second one-way valve 15 is arranged on the outside of the liquid pipe 14.

[0022] In this embodiment, Figure 1 As shown, the housing assembly 1 includes a base 101 , a fixing plate 102 is provided on both sides of the top of the base 101 , and a motor 103 is provided on one side of the fixing plate 102 .

[0023] In this embodiment, Figure 4As shown, the central axis of the motor 103 is consistent with the central axis of the rotating shaft 2; the rotational molding mold can be flipped left and right during the processing of the plastic cylinder raw material, which greatly improves the uniformity of the plastic cylinder raw material during processing inside the rotational molding mold, thereby increasing work efficiency.

[0024] In this embodiment, Figure 4 As shown, springs are provided at the four corners of the top of the base 101 to increase the stability of the mounting plate 4 when it is not rotating, thereby preventing the mounting plate 4 from rotating on its own.

[0025] In this embodiment, Figure 1 As shown, the central axis of the servo motor 8 is consistent with the central axis of the lower mold 6; the plastic tube raw material in the rotational molding mold is rotated to allow the raw material to be heated evenly, thereby improving the quality of the finished plastic tube.

[0026] In this embodiment, Figure 2 As shown, the connecting tube 9 and the lower mold 6 are provided with a movable connection, which increases the stability of the connecting tube 9 during use and prevents the connecting tube 9 from rotating with the rotation of the lower mold 6.

[0027] In this embodiment, Figure 1 As shown, the liquid pump 13 is connected to the connecting valve 10 through the liquid pipe 14; it realizes rapid cooling of the plastic cylinder in the rotational molding mold, greatly improves the cooling efficiency of the plastic cylinder, solves the problem of long natural cooling cycle of the plastic cylinder, and thus greatly increases the production efficiency of the plastic cylinder.

[0028] The use method and advantages of this utility model: When this combined plastic cylinder rotational molding mold is used, the working process is as follows:

[0029] like Figure 1 、 Figure 2 、 Figure 3 and Figure 4As shown, first place the base 101 at the designated position, then pour the plastic tube raw material to be processed into the mold groove of the lower mold 6, then cover the upper mold 7, and fix the upper mold 7 and the lower mold 6, and then start the servo motor 8 to work. At this time, the servo motor 8 drives the plastic tube raw material inside the lower mold 6 to perform horizontal rotation processing, and then start the motor 103 to rotate. The motor 103 drives the rotating shaft 2 to rotate, and the rotating shaft 2 drives the fixing seat 3 to rotate. At this time, the fixing seat 3 drives the mounting plate 4 to rotate. At the same time, the mounting plate 4 drives the rotational molding mold to flip back and forth left and right through the mounting seat 5, thereby realizing the left and right flipping of the rotational molding mold during the processing of the plastic tube raw material, greatly improving the uniformity of the plastic tube raw material during processing inside the rotational molding mold. In order to increase work efficiency, when the processing is completed, the outlet pipe of the external coolant tank is connected to the liquid inlet 11, so that the coolant is transported to the inside of the connecting valve 10 through the liquid inlet 11 and the first one-way valve 12, and then transported to the cavity inside the rotational molding mold through the connecting pipe 9 by the connecting valve 10. At this time, the liquid pump 13 is started to work, and the liquid pump 13 extracts the coolant in the rotational molding mold cavity through the connecting pipe 9, and re-transports it to the coolant through the liquid pipe 14 and the second one-way valve 15, thereby realizing the recycling of the coolant and realizing rapid cooling of the plastic cylinder in the rotational molding mold, greatly improving the cooling efficiency of the plastic cylinder, and solving the problem of long natural cooling cycle of the plastic cylinder, thereby greatly increasing the production efficiency of the plastic cylinder, and thus meeting the requirements of the combined plastic cylinder rotational molding mold.

[0030] The above shows and describes the basic principles, main features, and advantages of the present invention. Persons skilled in the art should understand that the present invention is not limited to the above-described embodiments. The above-described embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A combined plastic cylinder rotational molding mold, comprising a shell assembly (1), characterized in that: A rotating shaft (2) is provided between the housing components (1) via a bearing, a fixed seat (3) is provided outside the rotating shaft (2), a mounting plate (4) is provided at the top of the fixed seat (3), mounting seats (5) are provided on both sides of the middle of the top of the mounting plate (4), a lower mold (6) is provided between the two mounting seats (5) via a bearing, an upper mold (7) is provided at the top of the lower mold (6), a servo motor (8) is provided on one side of the mounting seat (5), a connecting pipe (9) is provided inside one end of the lower mold (6), a connecting valve (10) is provided at one end of the connecting pipe (9), a liquid inlet (11) is provided at the top of the connecting valve (10), a first one-way valve (12) is provided outside the liquid inlet (11), a liquid pump (13) is provided on one side of the top of the mounting plate (4), a liquid pipe (14) is provided at the top of the liquid pump (13), and a second one-way valve (15) is provided outside the liquid pipe (14).

2. The combined plastic cylinder rotational molding die according to claim 1, characterized in that: The housing assembly (1) comprises a base (101), fixing plates (102) are provided on both sides of the top of the base (101), and a motor (103) is provided on one side of the fixing plate (102).

3. The combined plastic cylinder rotational molding die according to claim 2, characterized in that: The central axis of the motor (103) is consistent with the central axis of the rotating shaft (2).

4. The combined plastic cylinder rotational molding die according to claim 2, characterized in that: Springs are provided at the four corners of the top of the base (101).

5. The combined plastic cylinder rotational molding die according to claim 1, characterized in that: The central axis of the servo motor (8) is consistent with the central axis of the lower mold (6).

6. The combined plastic cylinder rotational molding die according to claim 1, characterized in that: The connecting pipe (9) and the lower mold (6) are provided with a movable connection.

7. The combined plastic cylinder rotational molding die according to claim 1, characterized in that: The liquid pump (13) is connected to the connecting valve (10) via a liquid pipe (14).

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