Rotational molding mold heating chamber

Abstract

The utility model discloses a rotational molding mold heating chamber which comprises a horizontally arranged polygon prism-shaped cavity, an inlet for a rotational molding mold to enter and exit and chamber doors symmetrically hinged to the two sides of the inlet are arranged at the bottom of the cavity, and the chamber doors on the two sides are synchronously opened and closed through a driving mechanism. The chamber doors on the two sides rotate outwards at the same time to open the inlet or rotate inwards at the same time to close the inlet so that a closed heating space can be formed in the cavity, a heating device is further arranged at the top of the cavity, and the heating device provides heat for the interior of the cavity and heats the rotational molding mold entering the cavity; the improved heating chamber can be lifted for installation, and a rotational molding mold can enter and exit from the inlet at the bottom of the cavity by matching with a lifting mechanism, so that a complicated hoisting mode is not needed, the rotational molding mold can enter and exit more conveniently, ground installation can be avoided, the use requirement of an installation environment is reduced, and the conveying of the rotational molding mold can be perfectly linked; the device is better suitable for automatic production, and the production efficiency is greatly improved.

Description

Technical Field

[0001] This utility model relates to a heating chamber, specifically a rotational molding mold heating chamber. Background Technology

[0002] Traditional heating chambers for rotomolding molds primarily employ a side-opening structure, meaning the entrance for the rotomolding mold is located on the side of the heating chamber. The mold can then be moved horizontally into the heating chamber via a transfer cart along a ground track, making the heating process relatively convenient. However, this process heats both the floor where the heating chamber is installed and the ground track leading into it, placing higher demands on the installation environment. Alternatively, a top-opening structure is used, where the entrance for the rotomolding mold is located at the top of the heating chamber. While this structure solves the problem of heating both the floor and the ground track, it is only suitable for hoisting the rotomolding mold. This makes the process of entering and exiting the mold more cumbersome, and hoisting methods often suffer from low accuracy and poor safety. In particular, hoisting methods are difficult to integrate into automated production equipment, meaning they cannot perfectly connect with the mold transport for automated production, thus significantly impacting production efficiency. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the defects of the prior art and provide a rotational molding mold heating chamber that facilitates the entry and exit of rotational molding molds, reduces the requirements of the installation environment, and is better suited for automated production.

[0004] The technical problem of this utility model is solved by the following technical solution:

[0005] A rotational molding mold heating chamber includes a horizontally arranged, multi-faceted prism-shaped cavity; the bottom of the cavity has an entrance for the rotational molding mold to enter and exit, and symmetrically hinged doors on both sides of the entrance; the doors on both sides are opened and closed synchronously by a drive mechanism, and the doors on both sides rotate outward to open the entrance or rotate inward to close the entrance, thereby forming a sealed heating space inside the cavity; a heating device is provided at the top of the cavity, which provides heat to the cavity and heats the rotational molding mold entering the cavity.

[0006] The cavity is a horizontally arranged regular octagonal prism structure. The entrance includes a main entrance located on the bottom surface of the regular octagonal prism and two secondary entrances located on the inclined surfaces of the bottom surface of the regular octagonal prism. The two secondary entrances are symmetrically arranged with the main entrance as the center and are connected to the main entrance as a whole.

[0007] The aforementioned doors include a main door for opening and closing the main entrance and a secondary door for opening and closing the secondary entrance.

[0008] The main entrance door is composed of two half-doors joined together. The upper side of each secondary entrance door is hinged to the side of the octagonal prism of the cavity, and the lower side is hinged to the upper side of the adjacent half-door. The two half-doors rotate outward simultaneously to open the main entrance, and then the two secondary entrances rotate outward simultaneously to open the two secondary entrances. The two secondary entrances rotate inward simultaneously to close the two secondary entrances, and then the two half-doors rotate inward simultaneously to close the main entrance.

[0009] The drive mechanism consists of a main drive cylinder that drives the main chamber door to open and close the main entrance and a secondary drive cylinder that drives the secondary chamber door to open and close the secondary entrance.

[0010] The upper end of the main drive cylinder is hinged to the auxiliary chamber door, and the lower end is hinged to the flipping seat of the half door. The main drive cylinder retracts and drives the half door to rotate outward to open the main entrance, or the main drive cylinder extends and drives the half door to rotate inward to close the main entrance, through the flipping seat. The upper end of the auxiliary drive cylinder is hinged to the end face of the cavity, and the lower end is hinged to the auxiliary chamber door. The auxiliary drive cylinder extends and pushes the auxiliary chamber door to rotate outward to open the auxiliary entrance, or the auxiliary drive cylinder retracts and drives the auxiliary chamber door to rotate inward to close the auxiliary entrance.

[0011] The cavity has opening slots on both ends. Each opening slot is an inverted U-shaped straight slot that is closed at the top and extends through at the bottom. The center line of the opening slot overlaps with the vertical center line of the end face.

[0012] The opening groove is provided with vertically arranged opening and closing strips on both sides. The upper ends of the opening and closing strips are hinged and the lower ends are open and closed. The lower ends of the two opening and closing strips rotate inward around the hinge point at the upper end to close the opening groove. The lower ends of the two opening and closing strips rotate outward around the hinge point at the upper end to separate and open the opening groove.

[0013] The two opening and closing strips are provided with semi-circular notches on their opposite surfaces. When the two opening and closing strips are brought together to close the opening groove, the two notches are engaged to form a circular hole. The closing line of the two opening and closing strips is parallel to the axis of the opening groove, and the circular hole is located at the upper end of the opening groove.

[0014] The heating device includes a combustion chamber located at the top of the cavity, on which a burner and a circulating fan are installed. The burner provides heat to the combustion chamber, and the circulating fan then transports the heat from the combustion chamber into the cavity.

[0015] Compared with existing technologies, this utility model mainly provides a heating chamber with a horizontally arranged, multi-faceted prism-shaped cavity. The entrance for the rotational molding mold is located at the bottom of the cavity, and symmetrically hinged doors are provided on both sides of the entrance. These doors can be opened and closed synchronously via a drive mechanism. A heating device is located at the top of the cavity. Thus, when the doors on both sides simultaneously rotate outward to open the entrance, the rotational molding mold can enter the cavity through the entrance. Then, they simultaneously rotate inward to close the entrance, creating a sealed heating space within the cavity. The heating device then provides heat to the cavity, thus heating the mold inside. The rotational molding mold inside the chamber is heated. The improved heating chamber, with both the entrance and the door for opening and closing the entrance located at the bottom of the cavity, allows for elevated installation. Combined with a lifting mechanism, the rotational molding mold can be directly moved in and out of the cavity from the bottom entrance, eliminating the need for complex hoisting methods. This makes mold entry and exit more convenient, avoids ground installation, and reduces the requirements for the installation environment. Furthermore, this heating chamber can perfectly connect with the mold conveyor and become part of automated production equipment, making it better suited for automated production and greatly improving production efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the opening groove of this utility model in the closed state.

[0017] Figure 2 for Figure 1 The left view.

[0018] Figure 3 for Figure 1 The right view.

[0019] Figure 4 for Figure 1 A bottom view.

[0020] Figure 5 for Figure 1 A stereoscopic view from one of the perspectives.

[0021] Figure 6 for Figure 1 A stereoscopic view from another perspective.

[0022] Figure 7 This is a schematic diagram of the structure of this utility model where both the inlet and the opening slot are in the open state.

[0023] Figure 8 for Figure 7 A three-dimensional image. Detailed Implementation

[0024] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0025] like Figures 1 to 8 As shown, 1. Cavity, 11. Inlet, 111. Main inlet, 112. Secondary inlet, 12. Opening slot, 2. Heating device, 21. Combustion chamber, 22. Burner, 23. Circulating fan, 3. Drive mechanism, 31. Main drive cylinder, 32. Secondary drive cylinder, 4. Tilting seat, 5. Chamber door, 51. Main chamber door, 511. Half door, 52. Secondary chamber door, 6. Opening and closing bar, 61. Round hole, 611. Notch, 7. Opening and closing cylinder.

[0026] A rotational molding die heating chamber, such as Figure 1 As shown, this invention mainly relates to a chamber structure for heating rotational molding molds. It can be perfectly connected to the conveyor of rotational molding molds and be matched as part of automated production equipment, thus making it better suited for automated production and greatly improving the production efficiency of rotational molded products.

[0027] The heating chamber includes a horizontally arranged, multi-faceted prism-shaped cavity 1, that is, the cavity is placed horizontally and the axis of the cavity is horizontal. In this embodiment, the cavity 1 is a horizontally arranged regular octagonal prism structure, which is composed of a top surface, two opposite top inclined surfaces, two opposite side surfaces, two opposite bottom inclined surfaces and a bottom circle forming a circumferential surface, and regular octagonal surfaces respectively set at both ends.

[0028] The cavity is equipped with a heating device 2 at its top. Multiple heating devices can be selected, with the specific number determined primarily by the size of the cavity. For example, in this embodiment… Figure 5 The diagram shows four heating devices arranged sequentially along the length of cavity 1, i.e., the horizontal direction. Each heating device 2 includes a combustion chamber 21 located on the top surface of cavity 1. This combustion chamber is directly connected to the inside of cavity 1. A burner 22 and a circulating fan 23 are installed on the combustion chamber 21. The burner 22 provides combustion heat to the combustion chamber 21, and the circulating fan 23 transports the heat from the combustion chamber 21 to the cavity. In other words, the heating device 2 can provide heat to the cavity 1, thereby heating the rotational molding mold (not shown in the figure) that enters the cavity 1.

[0029] The cavity 1 has an entrance 11 for the rotational molding mold to enter and exit, and chamber doors 5 symmetrically hinged on both sides of the entrance.

[0030] The entrance 11 includes a main entrance 111 located on the bottom surface of a regular octagonal prism and two secondary entrances 112 located on the inclined surfaces of the bottom surface of the regular octagonal prism. The two secondary entrances are arranged symmetrically with the main entrance as the center and are connected to the main entrance as a whole.

[0031] The chamber door 5 includes a main chamber door 51 for opening and closing the main entrance 111 and a secondary chamber door 52 for opening and closing the secondary entrance 112. The main chamber door 51 is composed of two half doors 511. In fact, the main chamber door 51 is divided in half to form two half doors 511, and the dividing line of the two half doors is parallel to the axis of the cavity 1. Then, each secondary chamber door 52 is connected to the adjacent half door 511 to form a group to form each side chamber door 5. Specifically, the upper side of the secondary chamber door 52 of each secondary entrance 112 is hinged to the side of the regular octagonal prism of the cavity 1, and the lower side is hinged to the upper side of the adjacent half door 511.

[0032] In this way, rotating the doors 5 on both sides outwards simultaneously opens the entrance 11, or rotating them inwards simultaneously closes the entrance 11, creating a sealed heating space within the cavity 1. Specifically, as follows... Figure 6 As shown, when the two half doors 511 rotate outwards simultaneously to open the main entrance 111, and the two auxiliary doors 52 also rotate outwards simultaneously to open the two auxiliary entrances 112, the main entrance 111 and the two auxiliary entrances 112 can be opened in a coordinated manner; or the two auxiliary doors 52 rotate inwards simultaneously to close the two auxiliary entrances 112, and the two half doors 511 also rotate inwards simultaneously to close the main entrance 111, the main entrance 111 and the two auxiliary entrances 112 can be closed in a coordinated manner.

[0033] Of course, the purpose of adopting the combination design of main inlet 111 and secondary inlet 112 is to form a larger inlet at the bottom of cavity 1 to facilitate the entry and exit of rotational molding mold. In this embodiment, the inlet width formed by main inlet 111 and two secondary inlets 112 is close to the maximum width of cavity 1, which is obviously more suitable for the outer diameter of rotational molding mold.

[0034] The drive mechanism 3 consists of a main drive cylinder 31 that drives the main chamber door 51 to open and close the main entrance 111, and a secondary drive cylinder 32 that drives the secondary chamber door 52 to open and close the secondary entrance 112. Multiple main drive cylinders 31 can be selected, with the specific number chosen based on the size of the cavity. For example, in this embodiment… Figure 6 As shown, two sets of main drive cylinders 31 are respectively provided on both sides of the cavity to drive the opening and closing of the two half doors 511. Each set of main drive cylinders 31 consists of four cylinders, and the four cylinders in each set are arranged sequentially along the length of the cavity 1, i.e., the horizontal direction. In actual operation, these two sets of main drive cylinders, that is, a total of eight main drive cylinders 31, need to work synchronously to ensure the synchronous opening and closing of the two half doors 511.

[0035] Meanwhile, the upper end of each main drive cylinder 31 is hinged to the auxiliary chamber door 52, and the lower end is hinged to the flipping seat 4 of the half door 511. When the main drive cylinder 31 retracts, it will drive the half door 511 to rotate outward through the flipping seat 4 to open the main entrance 111. Or, when the main drive cylinder 31 extends outward, it will drive the half door 511 to rotate inward through the flipping seat 4 to close the main entrance 111.

[0036] The flipping seat 4 is a triangular connecting seat welded to the half door 511. Its function is to provide a smooth flipping of the half door 511, that is, to allow the main drive cylinder 31 to easily and quickly flip the half door 511 through the flipping seat 4.

[0037] The auxiliary drive cylinders 32 are respectively set at both ends of the cavity 1. Two auxiliary drive cylinders are set at each end to drive the two auxiliary chamber doors 52 respectively. In fact, each auxiliary chamber door is driven to open and close by the auxiliary drive cylinders 32 at both ends of the cavity, that is, a total of two auxiliary drive cylinders. The four auxiliary drive cylinders 32 of the two auxiliary chamber doors 52 also need to work synchronously to ensure the synchronous opening and closing of the two auxiliary chamber doors 52.

[0038] The upper end of each auxiliary drive cylinder 32 is hinged to the end face of the cavity 1, and the lower end is hinged to the auxiliary chamber door 52. When the auxiliary drive cylinder extends outward and pushes the auxiliary chamber door 52 to rotate outward, the auxiliary inlet 112 can be opened, or the auxiliary drive cylinder 32 retracts inward and drives the auxiliary chamber door 52 to rotate inward, the auxiliary inlet 112 can be closed.

[0039] The cavity 1 has opening slots 12 on both ends of its end face, and the opening slots on each end face are as follows: Figure 7 , Figure 8 The image shows an inverted U-shaped straight groove that is closed at the top and extends through the bottom, with the axis of the opening groove 12 overlapping the vertical center line of the end face.

[0040] Furthermore, vertically arranged opening and closing strips 6 are provided on both sides of the opening groove 12, and the upper ends of the opening and closing strips on both sides are hinged and the lower ends are open and closed. Therefore, the lower ends of the two opening and closing strips 6 can rotate inward around the hinge point at the upper end to close the opening groove 12, or the lower ends of the two opening and closing strips 6 can rotate outward around the hinge point at the upper end to separate and open the opening groove 12.

[0041] In addition, semi-circular notches 611 are provided on the opposite surfaces of the two opening and closing strips 6. When the two opening and closing strips 6 are brought together to close the opening groove 12, the two notches 611 will engage with each other to form a circular hole 61. At this time, the closing line of the two opening and closing strips 6 is exactly parallel to the axis of the opening groove 12, and the circular hole 61 is located at the upper end of the opening groove 12. Figure 5 As shown, the center of the circular hole 61 is exactly on the axis of the cavity 1.

[0042] Furthermore, the opening and closing bars 6 at both ends of the cavity 1 can be synchronously opened and closed by two opening and closing cylinders 7, and the opening and closing of the opening slots 12 at both ends is linked with the opening and closing of the inlet 11, as shown in the specific structure. Figure 7 , Figure 8 As shown, the two ends of the existing rotational molding mold are usually supported by the support shafts. When the rotational molding mold needs to enter the cavity, the inlet 11 and the opening slot 12 need to be opened simultaneously. At the same time, the rotational molding mold enters the cavity 1 through the inlet 11, and the support shafts at both ends can also enter the upper end of the opening slot through the lower end of the opening slot 12. At this time, the inlet 11 is closed by the chamber door 5 to seal the rotational molding mold in the cavity 1. The two opening and closing strips 6 can also close the opening slot 12 simultaneously, and the round hole 61 formed by the two notches 611 is just fitted with the support shaft. Thus, when the two opening and closing strips 6 close the opening slot 12, the closing process is not restricted by the support shaft.

[0043] One end of each of the two opening and closing cylinders 7 is hinged to one of the two opening and closing bars 6, and the other end of each cylinder is hinged to a mounting bracket. The mounting bracket is a support for the heating chamber and is not shown in the figure because it is not within the protection scope of this utility model. When the opening and closing cylinder 7 extends outward and pushes the two opening and closing bars 6 together, the opening slot 12 can be closed. When the opening and closing cylinder 7 retracts inward and drives the two opening and closing bars 6 to separate, the opening slot 12 can be opened.

[0044] Since the heating chamber of this utility model has both the inlet 11 and the door 5 for opening and closing the inlet located at the bottom of the cavity 1, the heating chamber can be raised and installed in actual use. With the help of the lifting mechanism (not shown in the figure), the rotational molding mold can be directly put in and out of the inlet 11 at the bottom of the cavity. Therefore, there is no need to use a complicated hoisting method, which makes it more convenient to put in and out of the rotational molding mold, avoids ground installation, and reduces the usage requirements of the installation environment.

[0045] The embodiments described above are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the invention, and these equivalent forms also fall within the scope defined by the appended claims.

Claims

1. A heating chamber for rotational molding, characterized in that: Includes a horizontally arranged, multi-faceted cavities (1); The cavity (1) has an entrance (11) at the bottom for the rotational molding mold to enter and exit, and chamber doors (5) symmetrically hinged on both sides of the entrance. The chamber doors (5) on both sides are opened and closed synchronously through the drive mechanism (3), and the chamber doors (5) on both sides rotate outward to open the entrance (11) or rotate inward to close the entrance (11) at the same time, so that a sealed heating space is formed inside the cavity (1). The cavity (1) is provided with a heating device (2) at the top. The heating device provides heat to the cavity (1) and heats the rotational molding mold that enters the cavity (1).

2. The heating chamber for rotational molding according to claim 1, characterized in that... The cavity (1) is a horizontally arranged regular octagonal prism structure. The entrance (11) includes a main entrance (111) located on the bottom surface of the regular octagonal prism and two secondary entrances (112) located on the inclined surface of the bottom surface of the regular octagonal prism. The two secondary entrances are arranged symmetrically with the main entrance as the center and are connected to the main entrance (111).

3. The rotational molding die heating chamber according to claim 2, characterized in that... The chamber door (5) includes a main chamber door (51) that opens and closes the main entrance (111) and a secondary chamber door (52) that opens and closes the secondary entrance (112).

4. The heating chamber for rotational molding according to claim 3, characterized in that... The main chamber door (51) is composed of two half doors (511). The upper side of the secondary chamber door (52) of each secondary entrance (112) is hinged to the side of the octagonal prism of the cavity (1), and the lower side is hinged to the upper side of the adjacent half door (511). The two half doors (511) rotate outward to open the main entrance (111) at the same time, and then cooperate with the two secondary chamber doors (52) to rotate outward to open the two secondary entrances (112) at the same time. The two secondary chamber doors (52) rotate inward to close the two secondary entrances (112) at the same time, and then cooperate with the two half doors (511) to rotate inward to close the main entrance (111) at the same time.

5. A rotational molding die heating chamber according to claim 3, characterized in that... The drive mechanism (3) consists of a main drive cylinder (31) that drives the main chamber door (51) to open and close the main entrance (111) and a secondary drive cylinder (32) that drives the secondary chamber door (52) to open and close the secondary entrance (112).

6. A rotational molding die heating chamber according to claim 5, characterized in that... The upper end of the main drive cylinder (31) is hinged to the auxiliary chamber door (52), and the lower end is hinged to the flip seat (4) of the half door (511). The main drive cylinder (31) retracts and drives the half door (511) to rotate outward to open the main entrance (111) via the flip seat (4), or the main drive cylinder (31) extends and drives the half door (511) to rotate inward to close the main entrance (111) via the flip seat (4). The upper end of the auxiliary drive cylinder (32) is hinged to the end face of the cavity (1), and the lower end is hinged to the auxiliary chamber door (52). The auxiliary drive cylinder (32) extends and pushes the auxiliary chamber door (52) to rotate outward to open the auxiliary entrance (112), or the auxiliary drive cylinder (32) retracts and drives the auxiliary chamber door (52) to rotate inward to close the auxiliary entrance (112).

7. A rotational molding die heating chamber according to claim 1, characterized in that... The cavity (1) has an opening groove (12) on both ends of the end face. The opening groove on each end face is an inverted U-shaped straight groove that is closed at the top and passes through at the bottom. The axis of the opening groove (12) overlaps with the vertical center line of the end face.

8. A rotational molding die heating chamber according to claim 7, characterized in that... The opening groove (12) is provided with vertically arranged opening and closing strips (6) on both sides. The upper ends of the opening and closing strips on both sides are hinged and the lower ends are open and closed. The lower ends of the two opening and closing strips (6) rotate inward around the hinge point at the upper end and close the opening groove (12). The lower ends of the two opening and closing strips (6) rotate outward around the hinge point at the upper end and separate to open the opening groove (12).

9. A rotational molding die heating chamber according to claim 7, characterized in that... The two opening and closing strips (6) are provided with semi-circular notches (611) on their opposite surfaces. When the two opening and closing strips (6) come together to close the opening groove (12), the two notches (611) will engage with each other to form a round hole (61). The closing line of the two opening and closing strips (6) is parallel to the axis of the opening groove (12), and the round hole (61) is located at the upper end of the opening groove (12).

10. A rotational molding die heating chamber according to claim 1, characterized in that... The heating device (2) includes a combustion chamber (21) set at the top of the cavity (1), on which a burner (22) and a circulating fan (23) are installed. The burner (22) provides heat to the combustion chamber (21), and the circulating fan (23) transports the heat in the combustion chamber (21) to the cavity (1).

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