A bracket used for rotational molding mold

Abstract

The present invention provides a bracket applied to a roto-molding mold, belonging to the field of mechanical technology. It solves the problem that the existing roto-molding molds are prone to produce defective products due to the inability to evenly coat the internal plastic, melt and adhere to the entire surface of the mold cavity during the rotation or rotation process. The bracket applied to the roto-molding mold includes a first support assembly, the first support assembly includes a first support part; the first support part is rotatably connected to the first support mechanism; the first support frame and the second support frame are fixedly connected on both sides of the first support mechanism respectively; the rotating connection part drives the bracket to swing; the second support assembly is fixedly connected between the first support frame and the second support frame; the second support assembly is provided with a rolling abutment part. The present invention can reduce the pressure on the first support part when the roto-molding mold is in a swinging state through the second support assembly, which is beneficial to prolonging the life of the first support part.

Description

Technical Field

[0001] The invention belongs to the field of mechanical technology and relates to a bracket, in particular to a bracket applied to a rotational molding mold. Background Art

[0002] Roto-molding is a process for forming hollow plastic products, also known as rotational molding, rotational modeling or rotational molding. The method is to first add the plastic raw material into the mold, and then the mold is continuously rotated along two vertical axes and heated. Under the action of gravity and heat energy, the plastic raw material in the mold is gradually and evenly coated, melted and adhered to the entire surface of the mold cavity, forming into the required shape, and then cooled and shaped into a product. Roto-molding machine is a machine developed to realize this process.

[0003] The existing rotomolding mold support is as follows Figure 1 As shown, there is only a first support assembly, which includes a first support portion and a first support rod, and the first support frame and the second support frame are connected to the two sides of the first support assembly respectively. During the rotomolding process, the existing rotomolding mold is only fixedly connected to the first support portion, causing the first support portion to bear the entire weight of the rotomolding machine. In particular, when the entire support rotates so that the rotomolding mold and the first support portion are not in the same vertical direction, the first support portion will be subject to the radial force caused by the gravity of the rotomolding mold itself and will be easily damaged; thus, during the rotation or rotation of the existing rotomolding machine, it is easy to cause the internal plastic to be unable to be evenly coated, melted and adhered to the entire surface of the mold cavity, and it is easy to produce defective products. Summary of the invention

[0004] The purpose of the present invention is to solve the above technical problems and propose a bracket used in rotational molding molds.

[0005] The purpose of the present invention can be achieved by the following technical solutions:

[0006] A bracket used for a rotational molding mold, comprising a first support assembly, the first support assembly comprising a first support mechanism and a first support portion used to connect the rotational molding mold; the first support portion is rotatably connected to the first support mechanism; the first support frame and the second support frame are respectively fixedly connected on both sides of the first support mechanism; a rotating connection portion is provided on the outer side of the first support frame and / or the second support frame; the rotating connection portion drives the bracket to swing;

[0007] A second support assembly is fixedly connected between the first support frame and the second support frame; the second support assembly is provided with a rolling abutment portion;

[0008] When the rotating connection part drives the bracket to swing, the rolling abutment part abuts against the outer side surface of the rotational molding mold;

[0009] When the first supporting portion drives the rotational molding mold to rotate together, the rolling abutting portion abuts against the outer side surface of the rotational molding mold and can generate relative displacement.

[0010] Preferably, the second supporting assembly is provided with a driving mechanism for driving the rolling abutment portion to move closer to or away from the rotational molding mold.

[0011] Preferably, the driving mechanism comprises a driving connection device and a driving source; the driving connection device is fixedly connected to the top or bottom of the rolling abutment portion; and the driving source is movably connected to the driving connection device.

[0012] Preferably, the number of the drive connection devices is two; one drive connection device is fixedly connected to the top of the rolling abutment portion; the other drive connection device is fixedly connected to the bottom of the rolling abutment portion; each drive connection device is connected to one of the drive sources.

[0013] Preferably, there are two drive connection devices; one drive connection device is fixedly connected to the top of the rolling abutment portion; the other drive connection device is fixedly connected to the bottom of the rolling abutment portion; the drive source is an air pump, and the action mechanism of the air pump is movably connected to the two drive connection devices.

[0014] Preferably, the rolling abutment portion comprises a central shaft and a rolling element, and the rolling element is sleeved on the central shaft.

[0015] Preferably, the driving connection device comprises a sliding member and a sliding rail; the sliding member is fixedly connected to one end of the central shaft; the sliding rail is fixedly connected to the second supporting assembly; the sliding member is slidably connected to the sliding rail;

[0016] The driving mechanism also includes a first baffle, an adjusting screw and a limit nut. The first baffle is fixed to the end of the slide rail. The adjusting screw passes through the first baffle, one end of the adjusting screw is fixedly connected to the driving connection device, and the limit nut is threadedly connected to the other end of the adjusting screw.

[0017] Preferably, the second supporting assembly is provided with at least two rolling abutment portions which are arranged opposite to each other.

[0018] Preferably, all the rolling abutment portions on the second support assembly cooperate to form an abutment stabilization zone.

[0019] Preferably, the driving connection device also includes a bearing, a spacer, a round nut stop washer, a round nut, and a bearing cover; the bearing is installed between the sliding member and the center axis; the center axis is sequentially installed with a spacer, a round nut stop washer, and a round nut in the direction away from the rolling member to close to the rolling member; a bearing cover is installed on the outer side of the sliding member; the second support assembly is detachably connected to the first support frame and the second support frame; the first support frame and the second support frame are both provided with an installation area, and a plurality of installation holes are spaced between the highest position and the lowest position of the installation area; the second support assembly is installed on the installation area by means of screws cooperating with the installation holes; a triangular stabilization area is provided at the connection between the second support assembly and the first support frame or the second support frame.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. The present invention installs a second support assembly between the first support frame and the second support frame, which can reduce the pressure on the first support part of the rotational molding mold when it is swinging, which is beneficial to prolonging the life of the first support part. At the same time, it overcomes the slight deviation of the rotational molding mold caused by its own gravity, so that the plastic raw material in the mold can be evenly coated, melted and adhered to the entire surface of the mold cavity, and formed into a required shape, thereby reducing the production rate of defective products. In addition, when the rotational molding mold is in a rotating state, the second support assembly can prevent the rotational molding mold from horizontal deviation, which greatly enhances the economic benefits.

[0022] The present invention provides a driving structure to change the position of the rolling abutment portion, which does not require disassembly and reinstallation, is very convenient, and is suitable for different types of rotational molding molds.

[0023] The first support frame and the second support frame of the present invention are both provided with an installation area, and a plurality of installation holes are spaced between the highest position and the lowest position of the installation area; the second support assembly is installed on the installation area by screws and the installation holes. In this way, the height of the second support assembly can be adjusted to adapt to rotational molds of different heights to achieve the best abutment effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the support structure of the prior art

[0025] Figure 2 This is a schematic diagram of the bracket structure after connecting to the rotational molding mold.

[0026] Figure 3 This is a schematic diagram of the bracket structure

[0027] Figure 4 This is an exploded diagram of the drive structure.

[0028] In the figure, 1. first support assembly; 11. first support part; 12. first support mechanism; 2. first support frame; 3. second support frame; 4. rotating connection part; 5. second support assembly; 6. rolling abutment part; 61. center axis; 62. rolling element; 63. bearing; 64. spacer; 65. round nut stop washer; 66. round nut; 67. bearing cover; 7. driving mechanism; 71. sliding element; 72. slide rail; 73. first baffle; 74. adjusting screw; 75. limiting nut; 8. triangular stabilization zone; 9. abutment stabilization zone; 100. rotational molding mold. DETAILED DESCRIPTION

[0029] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0030] like Figure 2-4 As shown, a bracket used for a rotational molding mold includes a first support assembly 1, the first support assembly 1 includes a first support portion 11 and a first support mechanism 12 for connecting a rotational molding mold 100; the first support portion 11 is rotatably connected to the first support mechanism 12; a chain drive mechanism is arranged inside the first support mechanism 12, and the chain drive mechanism can drive the first support portion 11 to rotate 360° around its own axis. The way in which the first support mechanism 12 drives the first support portion 11 and the specific connection method between the first support mechanism 12 and the first support portion 11 are prior art, and the present application will not repeat them. The first support frame 2 and the second support frame 3 are fixedly connected to the two sides of the first support mechanism 12, respectively. In this embodiment, the first support frame 2, the second support frame 3 and the first support mechanism 12 form a U-shaped support mechanism. A rotating connection portion 4 is arranged on the outer side of the first support frame 2 and / or the second support frame 3. The rotating connection portion 4 drives the bracket to swing. The rotating connection portion 4 is rotatably connected to a support device installed with a motor drive, and one of the rotating connection portions 4 can be selected to install two gears, and the swing of the bracket or the rotation of the first support portion 11 can be achieved by driving the gears. How the rotating connection part 4 drives the bracket to swing or the first support part 11 to rotate is a prior art and will not be described in detail in this application.

[0031] like Figure 2 and Figure 3 As shown, in order to reduce the pressure of the first support part 11 and make the plastic more uniform during rotational molding, in this embodiment, a second support assembly 5 is fixedly connected between the first support frame 2 and the second support frame 3. In this embodiment, the second support assembly 5 is preferably composed of a plurality of steel rods, and the shape of the second support assembly 5 is not restricted, as long as the rotational molding mold 100 can be abutted during the swinging process and will not hinder the rotational molding mold 100 from rotating around the first support part 11 as the axis.

[0032] The second support assembly 5 is provided with a rolling abutment portion 6. The rolling abutment portion 6 includes a central shaft 61 and a rolling member 62, and the rolling member 62 is sleeved on the central shaft 61. The outer side surface of the rolling abutment portion 6 can be an arc or a multi-corrugated wave portion with a certain arc, or a plurality of rollers can be sleeved on the central shaft 61 to form the rolling abutment portion 6. In this embodiment, the rolling abutment portion 6 is preferably a roller.

[0033] The state of the bracket of this embodiment is as follows: when the rotating connection part 4 drives the bracket to swing, the rolling abutment part 6 abuts against the outer side surface of the rotomolding mold 100; when the first support part 11 drives the rotomolding mold 100 to rotate together, the rolling abutment part 6 abuts against the outer side surface of the rotomolding mold 100 and can produce relative displacement. In order to achieve the best support effect, the rolling abutment part 6 of this embodiment always abuts against the rotomolding mold 100. When the rotomolding mold 100 swings, the rolling abutment part 6 abuts against the rotomolding mold 100, and the rolling abutment part 6 does not rotate. When the rotomolding mold 100 rotates, the rolling abutment part 6 abuts against the rotomolding mold 100 and rotates when the rotomolding mold 100 rotates.

[0034] The second support assembly 5 is provided with a driving mechanism 7 for driving the rolling abutment portion 6 to move closer to or away from the rotational molding mold 100. The driving mechanism 7 facilitates the control of the position of the rolling abutment portion 6 on the second support assembly 5, and facilitates adjustment for rotational molding molds 100 of different specifications, which is conducive to promoting economic benefits. The mechanism capable of controlling the movement of the rolling abutment portion 6 in the prior art should be considered as the driving mechanism 7 described in this embodiment.

[0035] The driving mechanism 7 includes a driving connection device and a driving source; the driving connection device is fixedly connected to the top or bottom of the rolling abutment portion 6; and the driving source is movably connected to the driving connection device.

[0036] like Figure 3 As shown, the number of drive connection devices in this embodiment is two; one drive connection device is fixedly connected to the top of the rolling abutment portion 6; the other drive connection device is fixedly connected to the bottom of the rolling abutment portion 6; each drive connection device is connected to a drive source.

[0037] like Figure 4As shown, the drive connection device includes a sliding member 71 and a slide rail 72; the sliding member 71 is fixedly connected to one end of the central shaft 61; the slide rail 72 is fixedly connected to the second support assembly 5; the sliding member 71 is slidably connected to the slide rail 72; the drive connection device also includes a bearing 63, a spacer 64, a round nut stop washer 65, a round nut 66, and a bearing cover 67; the bearing 63 is installed between the sliding member 71 and the central shaft 61; the central shaft 61 is sequentially installed with a spacer 64, a round nut stop washer 65, and a round nut 66 in the direction away from the rolling member 62 to close to the rolling member 62; and the bearing cover 67 is installed on the outer side of the sliding member 71. The above-mentioned drive connection device is fixedly connected to the rolling abutment portion 6, so that the driving source can control the position of the rolling abutment portion 6 through the drive connection device.

[0038] like Figure 4 As shown, the driving mechanism also includes a first baffle plate 73, an adjusting screw 74 and a limiting nut 75. The first baffle plate 73 is fixed to the end of the slide rail 72; the adjusting screw 74 passes through the first baffle plate 73, one end of the adjusting screw 74 is fixedly connected to the driving connection device, and the limiting nut 75 is threadedly connected to the other end of the adjusting screw 74. In this embodiment, when the position of the rolling abutment portion 6 needs to be adjusted, the limiting nut 75 needs to be loosened first, and then the adjusting screw 74 is pushed until the rolling abutment portion 6 abuts against the outer side of the rotational molding mold 100, and finally the limiting nut 75 is tightened to make the limiting nut 75 tightly abut against the first baffle plate 73. In this way, during the swinging process, the gravity of the rotational molding mold 100 has a force on the rolling abutment portion 6 toward the first baffle plate 73, which is offset by the locking force between the limiting nut 75 and the adjusting screw 74. In this way, a locking effect is played on the rolling abutment portion 6.

[0039] like Figure 2 and Figure 3 As shown, at least two rolling abutment portions 6 are arranged opposite to each other on the second support assembly 5. All rolling abutment portions 6 on the second support assembly 5 cooperate to form an abutment stabilization zone 9, so that each rolling abutment portion 6 is subjected to a consistent pressure, and the plastic in the rotational mold 100 can be made more uniform. Preferably, in this embodiment, four rolling abutment portions 6 are arranged on the second support assembly 5, and the four rolling abutment portions 6 are evenly distributed circumferentially on the second support assembly 5.

[0040] like Figure 3As shown, the second support assembly 5 is detachably connected to the first support frame 2 and the second support frame 3. The first support frame 2 and the second support frame 3 are both provided with an installation area, and a plurality of installation holes are spaced apart between the highest position and the lowest position of the installation area; the second support assembly 5 is installed on the installation area by the cooperation of screws and the installation holes. In this way, the position of the second support assembly 5 between the first support frame 2 and the second support frame 3 can be adjusted, that is, the height of the second support assembly 5 can be adjusted, which is convenient for rotational molding molds 100 of different heights. A triangular stabilization area 8 is provided at the connection between the second support assembly 5 and the first support frame 2 or the second support frame 3. The triangular stabilization area 8 strengthens the strength of the second support assembly 5.

[0041] Embodiment 2:

[0042] This embodiment is substantially the same as the first embodiment, except that there are two drive connection devices; one drive connection device is fixedly connected to the top of the rolling abutment portion 6; the other drive connection device is fixedly connected to the bottom of the rolling abutment portion 6; the driving source is an air pump, and the action mechanism of the air pump is movably connected to the two drive connection devices. The action mechanism of the air pump is a prior art.

[0043] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0044] Although the term "first", "second" and the like are used more frequently in this article, the possibility of using other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the present invention; interpreting them as any additional limitation is contrary to the spirit of the present invention.

Claims

1. A support for a rotational molding mold, comprising a first support assembly (1), the first support assembly (1) comprising a first support mechanism (12) and a first support portion (11) for connecting to the rotational molding mold (100); the first support portion (11) is rotatably connected to the first support mechanism (12); the first support frame (2) and the second support frame (3) are respectively fixedly connected on both sides of the first support mechanism (12); a rotation connection portion (4) is provided on the outer side of the first support frame (2) and / or the second support frame (3); the rotation connection portion (4) drives the support to swing; It is characterized in that A second support assembly (5) is fixedly connected between the first support frame (2) and the second support frame (3); the second support assembly (5) is provided with a rolling abutment portion (6); When the rotating connection portion (4) drives the bracket to swing, the rolling abutment portion (6) abuts against the outer side surface of the rotational molding mold (100); When the first support portion (11) drives the rotational mould (100) to rotate together, the rolling abutment portion (6) abuts against the outer side surface of the rotational mould (100) and is able to generate relative displacement; The second supporting assembly (5) is provided with a driving mechanism (7) for driving the rolling abutment portion (6) to move closer to or away from the rotational molding mold; the driving mechanism (7) comprises a driving connection device and a driving source; the driving connection device is fixedly connected to the top or bottom of the rolling abutment portion (6); the driving source is movably connected to the driving connection device; The rolling abutment portion (6) comprises a central shaft (61) and a rolling member (62), wherein the rolling member (62) is sleeved on the central shaft (61); the driving connection device comprises a sliding member (71) and a sliding rail (72); the sliding member (71) is fixedly connected to one end of the central shaft (61); the sliding rail (72) is fixedly connected to the second supporting assembly (5); the sliding member (71) is slidably connected to the sliding rail (72); The driving mechanism further comprises a first baffle (73), an adjusting screw (74) and a limiting nut (75); the first baffle (73) is fixed to the end of the slide rail (72); the adjusting screw (74) passes through the first baffle (73); one end of the adjusting screw (74) is fixedly connected to the driving connection device; the limiting nut (75) is threadedly connected to the other end of the adjusting screw (74); The second support assembly (5) is provided with at least two rolling abutment portions (6) arranged opposite to each other; The driving connection device further comprises a bearing (63), a spacer sleeve (64), a round nut stop washer (65), a round nut (66), and a bearing cover (67); the bearing (63) is mounted between the sliding member (71) and the central shaft (61); the central shaft (61) is sequentially mounted with a spacer sleeve (64), a round nut stop washer (65), and a round nut (66) in a direction away from the rolling member (62) and close to the rolling member (62); a bearing cover (67) is mounted on the outer side of the sliding member (71); the second support assembly (5) is detachably connected to the first support frame (2) and the second support frame (3); the first support frame (2) and the second support frame (3) are both provided with an installation area, and a plurality of installation holes are spaced apart between the highest position and the lowest position of the installation area; the second support assembly (5) is mounted on the installation area by screws cooperating with the installation holes; a triangular stabilization area (8) is provided at the connection between the second support assembly (5) and the first support frame (2) and the second support frame (3).

2. A bracket for a rotational molding mold according to claim 1, characterized in that: The number of the drive connection devices is two; one drive connection device is fixedly connected to the top of the rolling abutment portion (6); the other drive connection device is fixedly connected to the bottom of the rolling abutment portion (6); and each drive connection device is connected to one of the drive sources.

3. A bracket for a rotational molding mold according to claim 1, characterized in that: The number of the drive connection devices is two; one drive connection device is fixedly connected to the top of the rolling abutment portion (6); the other drive connection device is fixedly connected to the bottom of the rolling abutment portion (6); the drive source is an air pump, and the action mechanism of the air pump is movably connected to the two drive connection devices.

4. The bracket for rotational molding according to claim 1, characterized in that: All the rolling abutment portions (6) on the second support assembly (5) cooperate to form an abutment stabilization zone (9).

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