阅读说明：本技术 一种滚塑机的旋转体 (Rotating body of rotational molding machine ) 是由 雷涛 镇方雄 李干明 阮胜 许炎鑫 镇依婷 胡迁逢 镇方超 于 2018-07-26 设计创作，主要内容包括：本发明提供了一种滚塑机的旋转体,属于机械技术领域。滚塑机包括控制臂、转轴、转轮和驱动泵,驱动泵设置在控制臂的外端,转轮外套设有一壳体,壳体固定在控制臂的内端,旋转体还安装座本和模具,转轴的两端分别连接两个安装座,模具与对应的安装座相连,壳体上具有与驱动泵的输出口相连的进料孔,转轴的中部与转轮固定相连,转轴与壳体之间设置有两个分别位于转轮两侧的出料孔,安装座上设置有若干排料嘴,排料嘴对准排料嘴所在安装座上的模具的外壁面,位于安装座上的配料嘴与出料孔相通,驱动泵向转轮输出高压、高温的液体或气体或液气两相体的热源体。本发明具有能够提高产品质量、提高滚塑效率等优点。(The invention provides a rotating body of a rotational molding machine, and belongs to the technical field of machinery. The rotational moulding machine comprises a control arm, a rotating shaft, a rotating wheel and a driving pump, the driving pump is arranged at the outer end of the control arm, a shell is sleeved outside the rotating wheel, the shell is fixed at the inner end of the control arm, the rotating body is also provided with a mounting seat and a mould, two mounting seats are respectively connected at the two ends of the rotating shaft, the mould is connected with the corresponding mounting seats, a feeding hole connected with an output port of the driving pump is formed in the shell, the middle of the rotating shaft is fixedly connected with the rotating wheel, two discharging holes respectively positioned at the two sides of the rotating wheel are formed between the rotating shaft and the shell, a plurality of discharging nozzles are arranged on the mounting seats, the discharging nozzles are aligned to the outer wall surface of the mould on the mounting seats, the mixing nozzles positioned on the mounting seats are communicated with the discharging holes, and the driving pump outputs high-. The invention has the advantages of improving the product quality, improving the rotational molding efficiency and the like.)

1. The rotating body of the rotational molding machine is characterized in that the rotational molding machine comprises a control arm (1), a rotating shaft (42), a rotating wheel (41) and a driving pump (2), the driving pump (2) is arranged at the outer end of the control arm (1), a shell (43) is sleeved outside the rotating wheel (41), the shell (43) is fixed at the inner end of the control arm (1), the rotating body further comprises a mounting seat (31) and a mold (3), two ends of the rotating shaft (42) are respectively connected with the two mounting seats (31), the mold (3) is connected with the corresponding mounting seat (31), the shell (43) is provided with a feeding hole (44) connected with an output port of the driving pump (2), the middle part of the rotating shaft (42) is fixedly connected with the rotating wheel (41), two discharging holes (45) respectively located at two sides of the rotating wheel (41) are arranged between the rotating shaft (42) and the shell (43), the mounting seat (31) is provided with a plurality of discharging nozzles (56), the discharging nozzles (56) are aligned to the outer wall surface of the die (3) on the mounting seat (31) where the discharging nozzles (56) are located, the batching nozzles on the mounting seat (31) are communicated with the discharging hole (45), and the driving pump (2) outputs high-pressure and high-temperature liquid or gas or liquid-gas two-phase heat source bodies to the rotating wheel (41).

2. A rotating body of a rotational molding machine according to claim 1, wherein a vibration generating device capable of driving the mounting seat (31) to reciprocate in the axial direction of the rotating shaft (42) is provided between the rotating shaft (42) and the mounting seat (31).

3. The rotational body of the rotational molding machine according to claim 2, wherein the vibration generating device comprises a sleeve (46) fixedly connected with the housing (43), the rotational shaft (42) is inserted into the sleeve (46), a sliding valve (47) is sleeved outside the rotational shaft (42), the sliding valve (47) is slidably connected with the inner wall of the sleeve (46), a pushing block (48) is sleeved outside the rotational shaft (42), the pushing block (48) is slidably connected with the rotational shaft (42), the pushing block (48) is fixedly connected with the corresponding mounting seat (31), a limiting block (49) positioned on the inner side of the inner end (47) of the sliding valve is fixedly arranged on the rotational shaft (42), a first through hole (51) is formed on the sliding valve (47), and two ends of the first through hole (51) respectively penetrate through the surface of the sliding valve (47) and the inner wall surface of the sliding valve (47), a second through hole (52) is formed in the rotating shaft (42), the inner end of the second through hole (52) penetrates through the outer wall surface of the rotating shaft (42), the outer end of the second through hole (52) is communicated with each discharging nozzle (56), and when the slide valve (47) slides towards the outer side of the rotating shaft (42) along the rotating shaft (42), the opening at the outer end of the first through hole (51) can be communicated with the opening at the inner end of the second through hole (52); a first spring seat (53) is arranged on the inner side face of the mounting seat (31), a second spring seat (54) is arranged on the outer end face of the sleeve (46), the first spring seat (53) and the mounting seat (31) and the second spring seat (54) and the sleeve (46) are connected through bearings, and a return spring (55) is connected between the first spring seat (53) and the second spring seat (54).

4. A rotating body of a rotomoulding machine according to claim 1, 2 or 3, wherein a pressure limiting valve is provided at the output of the drive pump (2).

5. A rotating body of a rotational molding machine according to claim 1, 2 or 3, characterized in that a plurality of mounting bars (32) perpendicular to the mounting base (31) are fixedly arranged on the mounting base (31), and each discharge nozzle (56) is fixed on the mounting bar (32) corresponding to the mounting base (31).

6. A rotating body of a rotational molding machine according to claim 1, 2 or 3, wherein the heat source body is hydraulic oil or steam.

7. A rotating body of a rotomoulding machine according to claim 3, characterized in that the sleeve (46) is fixedly connected to the control arm (1) by means of a connecting arm (8).

Technical Field

The invention belongs to the technical field of machinery, and relates to a rotating body of a rotational molding machine.

Background

Rotational molding, also known as rotational molding, rotational molding and the like, is a rotational molding plastic hollow molding method. The method is that plastic raw material is added into a mould, then the mould is continuously rotated along two vertical axes and heated, the plastic raw material in the mould is gradually and uniformly coated and fused on the whole surface of the mould cavity under the action of gravity and heat energy, and the plastic raw material is formed into a required shape and then is cooled and shaped to form the product.

For rotational molding of products with complex internal structures, dark lattices, irregular pore channels and the like, if rotational molding is carried out by rotating and heating the mold along two vertical axes, coating blanks of raw materials are inevitably caused, so that the products have defects or can not be rotationally molded into desired plastic parts.

In addition, the existing rotational molding machine adopts a kiln heating mode, the mechanical arm extends into the kiln, and electric/gas components for controlling the rotation of the mold are easy to cause high-temperature failure or damage, so that the rotational molding machine is short in service life and poor in stability and reliability in the using process.

Disclosure of Invention

The invention aims to provide a rotating body of a rotational molding machine aiming at the problems in the prior art, and the technical problem to be solved by the invention is how to prolong the service life of the rotating body and ensure the service life of the rotating body.

The purpose of the invention can be realized by the following technical scheme: the utility model provides a rotational moulding machine's rotation body, its characterized in that, rotational moulding machine includes control arm, pivot, runner and driving pump, the driving pump sets up the outer end at the control arm, the runner overcoat is equipped with a casing, and the inner at the control arm is fixed to the casing, this and mould of mount pad are still gone back to the rotation body, and two are connected respectively at the both ends of pivot the mount pad, the mould links to each other with corresponding mount pad, have the feed port that links to each other with the delivery outlet of driving pump on the casing, the middle part of pivot links to each other with the runner is fixed, be provided with two discharge openings that are located the runner both sides respectively between pivot and the casing, be provided with a plurality of bin outlet on the mount pad, the outer wall surface of mould that the bin outlet was aimed at to the bin outlet of the bin outlet, the bin outlet that is located on the mount pad communicates with each other with the discharge opening, the, High temperature liquid or gas or liquid-gas two-phase body.

The driving pump drives the heat source body to drive the rotating wheel, the heat source body is sprayed out of the discharging nozzle when the rotating wheel rotates, the mold is rotated, the heat source body is sprayed on the outer wall surface of the mold, before the rotation molding raw material is loaded into the mold, the control arm is operated, the two rotating bodies are placed in the kiln, the kiln plays a role in auxiliary heating and heat preservation on the mold, the heat source body directly acts on the surface of the mold to heat the mold, and the heat source body is accumulated in the recovery tray after being sprayed with rain on the mold.

This rotational moulding machine adopts the heat source body drive mould rotatory to carry out the thermal conductance through the heat source body to the mould outer wall, change the rotatory mode of traditional electric control or hydraulic control direct drive mould, simplified the structure greatly, and make the components and parts of going deep into the kiln all belong to mechanical part, do not have the structure that does not have better high temperature resistance performance such as electronic part, make this rotational moulding machine's performance, life, stability in use and reliability promote greatly.

The rotator sets up in the kiln, is provided with the recovery tray in the kiln, and this rotational moulding machine adopts the mode of bathing heat, combines the auxiliary heating and the heat preservation effect of kiln, makes being heated of mould and heat conduction temperature balanced, and the rotational moulding product probably has the coating that position office such as irregular department, dead angle department can be better, and the shaping is effectual, and is efficient, and the yield is high, uses reliability height, stability height.

In the rotating body of the rotational molding machine, a vibration generating device capable of driving the mounting seat to reciprocate along the axial direction of the rotating shaft is arranged between the rotating shaft and the mounting seat.

Because the mould is in the rotation state, and the pivot is horizontal transverse distribution, the better coating in the global of mould of rotational moulding raw materials can be fine, but can not be better to the face and the position of longitudinal distribution such as inside, outside coat to need one kind can carry out the vibration generating device of horizontal reciprocating motion to the mount pad, make the cloud degree of mould more add the unit, make the rotational moulding raw materials can even coating and extend to each position in the mould.

In the above-mentioned rotator of rotational molding machine, the vibration generating device includes the sleeve that links to each other with the casing is fixed, the pivot is inserted and is established in the sleeve, the pivot overcoat is equipped with a slide valve, slide valve sliding connection is in the pivot, sliding connection between slide valve and the sleeve inner wall, the pivot overcoat is equipped with the promotion piece, promotion piece sliding connection is outside the pivot, promotion piece and the fixed linking to each other of corresponding mount pad, the fixed stopper that is located the slide valve inboard that is provided with in the pivot, seted up through-hole one on the slide valve, the interior terminal surface of slide valve and the internal face of slide valve are run through respectively to the both ends of through-hole one, be provided with through-hole two in the pivot, the outer wall surface of pivot is run through to the inner of through-hole two, the outer end of through-hole two is linked together with each bin outlet, when the, an outer end opening of the first through hole can be communicated with an inner end opening of the second through hole; the inner side surface of the mounting seat is provided with a first spring seat, the outer end surface of the sleeve is provided with a second spring seat, the first spring seat and the mounting seat and the second spring seat and the sleeve are connected through bearings, and a return spring is connected between the first spring seat and the second spring seat.

In the rotating body of the rotational molding machine, a pressure limiting valve is arranged at the output port of the driving pump.

The heat source body enters the feeding hole from the driving pump and drives the rotating wheel to rotate, the heat source body enters a region between the rotating shaft and the sleeve through the discharging hole, the high-pressure heat source body drives the sliding valve to enable the sliding valve to move towards the outer side on the rotating shaft, the reset spring is extruded, the pressure of the heat source body is gradually increased and pushes the pushing block to enable the mounting seat to move towards the outer side relative to the control arm until the through hole I is communicated with the through hole II, the heat source body can be discharged through the through hole I, the through hole II and the discharging nozzle in sequence, the pressure is reduced after the heat source body is discharged, the mounting seat moves towards the inner side to the original position under the action of the reset spring, and the limiting position is abutted against the limiting.

In the whole process, because the pressure of the heat source body is continuously changed, the output pressure of the driving pump is kept constant, the rotating speed of the rotating wheel is irregular, and the running speed of the reciprocating motion of the mounting seat along the axial direction of the rotating shaft is also irregular, so that the rotational molding raw materials in the mold can smoothly reach all parts in the mold to deal with the rotational molding of various irregular products.

In the rotating body of the rotational molding machine, the mounting seat is fixedly provided with a plurality of mounting rods perpendicular to the mounting seat, and each discharge nozzle is fixed on the mounting rod corresponding to the mounting seat.

In the rotating body of the rotational molding machine, the heat source body is hydraulic oil or steam.

In the rotating body of the rotational molding machine, the sleeve is fixedly connected with the control arm through a connecting arm.

Drawings

Fig. 1 is a schematic view of the whole structure of the rotational molding machine.

Fig. 2 is a schematic structural diagram of a rotating body in the rotational molding machine.

Fig. 3 is a schematic structural view of the vibration generating device in the rotational molding machine.

Fig. 4 is an enlarged view of a portion a in fig. 3.

Figure 5 is a cross-sectional view of the connection assembly in the present rotomolding machine.

In the figure, 1, control arm; 2. driving the pump; 3. a mold; 31. a mounting seat; 32. mounting a rod; 41. a rotating wheel; 42. a rotating shaft; 43. a housing; 44. a feed port; 45. a discharge hole; 46. a sleeve; 47. a spool valve; 48. a pushing block; 49. a limiting block; 51. a first through hole; 52. a second through hole; 53. a first spring seat; 54. a second spring seat; 55. a reset spring; 6. a discharge nozzle; 71. a chute; 72. connecting blocks; 73. bolt holes; 74. a connecting bolt; 75. a buffer spring; 8. a connecting arm.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the accompanying drawings, but the present invention is not limited to these embodiments.

As shown in fig. 1, fig. 2 and fig. 3, the rotational molding machine comprises a control arm 1, a rotating shaft 42, a rotating wheel 41 and a driving pump 2, wherein two sides of the control arm 1 are respectively provided with a rotating body, the rotating body comprises a mold 3, the driving pump 2 is arranged at the outer end of the control arm 1, the rotating wheel 41 is sleeved with a shell 43, the shell 43 is fixed at the inner end of the control arm 1, the rotating body further comprises a mounting seat 31, two ends of the rotating shaft 42 are respectively connected with the two mounting seats 31, the mold 3 is connected with the corresponding mounting seats 31, the shell 43 is provided with a feeding hole 44 connected with the output port of the driving pump 2, the middle part of the rotating shaft 42 is fixedly connected with the rotating wheel 41, two discharging holes 45 respectively positioned at two sides of the rotating wheel 41 are arranged between the rotating shaft 42 and the shell 43, the mounting seat 31 is provided with a plurality of discharging nozzles 56, the discharging nozzles 56 are, the burdening nozzles on the two mounting seats 31 are respectively communicated with the two discharge holes 45, and the driving pump 2 outputs high-pressure and high-temperature liquid or gas or liquid-gas two-phase heat source bodies to the rotating wheel 41; the rotational molding machine further comprises a kiln, a recovery tray is fixedly arranged in the kiln, the two molds 3 are positioned above the recovery tray, and the rotating shaft 42 is transversely and horizontally arranged.

The driving pump 2 drives the heat source body to drive the rotating wheel 41, the heat source body is sprayed to the discharging nozzle 56 while the rotating wheel 41 rotates, the mould 3 is rotated while the heat source body is sprayed on the outer wall surface of the mould 3, before that, rotational moulding raw materials are loaded into the mould 3, the control arm 1 is operated, two rotating bodies are placed in a kiln, the kiln plays the roles of auxiliary heating and heat preservation on the mould 3, the heat source body directly acts on the surface of the mould 3 to heat the mould, and the heat source body is stored in a recovery tray after being sprayed with rain on the mould 3.

This rotational molding machine adopts the heat source body drive mould 3 rotatory to carry out the thermal conductance through the heat source body to the 3 outer walls of mould, change the rotatory mode of traditional electric control or hydraulic control direct drive mould 3, simplified the structure greatly, and make the components and parts of going deep into the kiln all belong to the mechanical part, do not have the structure that does not have better high temperature resistance performance such as electronic part, make performance, life, stability in use and the reliability of this rotational molding machine promote greatly.

The rotational molding machine adopts a bath heating mode, combines the auxiliary heating and heat preservation effects of a kiln, enables the heating and heat conducting temperatures of the mold 3 to be balanced, and rotational molding products possibly have irregular positions, dead corners and other positions and can be coated well, so that the rotational molding machine is good in molding effect, high in efficiency, high in yield, high in use reliability and high in stability.

A vibration generating device capable of driving the corresponding mounting seat 31 to reciprocate along the axial direction of the rotating shaft 42 is respectively arranged between the rotating shaft 42 and the two mounting seats 31. Because the mold 3 is in a rotating state, and the rotating shaft 42 is horizontally and transversely distributed, the rotational molding raw material can be well coated on the peripheral surface of the mold 3, but the rotational molding raw material cannot be well coated on the longitudinally distributed plate surfaces and parts such as the inner side and the outer side, and therefore a vibration generating device capable of transversely reciprocating the mounting seat 31 is needed, the cloud degree of the mold 3 is more diversified, and the rotational molding raw material can be uniformly coated and extended to all parts in the mold 3.

As shown in fig. 3 and 4, the vibration generating device includes a sleeve 46 fixedly connected to the housing 43, the rotating shaft 42 is inserted into the sleeve 46, a slide valve 47 is sleeved outside the rotating shaft 42, the slide valve 47 is slidably connected to an inner wall of the sleeve 46, a push block 48 is sleeved outside the rotating shaft 42, the push block 48 is slidably connected to the corresponding mounting seat 31, a limit block 49 located inside the slide valve 47 is fixedly disposed on the rotating shaft 42, a through hole 51 is disposed on the slide valve 47, two ends of the through hole 51 respectively penetrate through an inner end surface of the slide valve 47 and an inner wall surface of the slide valve 47, a through hole two 52 is disposed on the rotating shaft 42, an inner end of the through hole two 52 penetrates through an outer wall surface of the rotating shaft 42, outer ends of the through hole two 52 are communicated with each discharging nozzle 56, when the slide valve 47 slides along the rotating, the outer end opening of the first through hole 51 can be communicated with the inner end opening of the second through hole 52; the inner side surface of the mounting seat 31 is provided with a first spring seat 53, the outer end surface of the sleeve 46 is provided with a second spring seat 54, the first spring seat 53 and the mounting seat 31 and the second spring seat 54 and the sleeve 46 are connected through bearings, and a return spring 55 is connected between the first spring seat 53 and the second spring seat 54.

A pressure limiting valve is arranged at the output port of the driving pump 2.

The heat source body enters the feeding hole 44 from the driving pump 2, the rotating wheel 41 is driven to rotate, the heat source body enters the area between the rotating shaft 42 and the sleeve 46 through the discharging hole 45, the high-pressure heat source body drives the sliding valve 47, the sliding valve 47 runs outwards on the rotating shaft 42, the return spring 55 is extruded, the pressure of the heat source body is gradually increased, the pushing block 48 is pushed, the mounting seat 31 runs outwards relative to the control arm 1 until the through hole I51 is communicated with the through hole II 52, the heat source body can be discharged through the through hole I51, the through hole II 52 and the discharging nozzle 56 in sequence, the pressure is reduced after the heat source body is discharged, the mounting seat 31 runs inwards to the original position under the action of the return spring 55, and the limiting position is that the sliding valve 47 abuts against the limiting block 49.

In the whole process, because the pressure of the heat source body is continuously changed, and the output pressure of the driving pump 2 is kept constant, the rotating speed of the rotating wheel 41 is irregular, the running speed of the reciprocating motion of the mounting seat 31 along the axial direction of the rotating shaft 42 is also irregular, so that the rotational molding raw material in the mold 3 can smoothly reach all parts in the mold 3 so as to deal with the rotational molding of various irregular products.

As shown in fig. 1 and 2, a plurality of mounting rods 32 perpendicular to the mounting base 31 are fixedly arranged on the mounting base 31, and each discharge nozzle 56 is fixed on the mounting rod 32 corresponding to the mounting base 31.

The heat source body is hydraulic oil or steam.

As shown in fig. 1, 2 and 5, the mold 3 is connected to each corresponding mounting rod 32 through a plurality of connecting assemblies; the connecting assembly comprises a sliding groove 71 formed in the outer wall surface of the mold 3, the sliding groove 71 is arc-shaped with radian smaller than 90 degrees, an I-shaped connecting block 72 is connected in the sliding groove 71 in a sliding mode, one end of the connecting block 72 is matched with the sliding groove 71, a bolt hole 73 is formed in the other end of the connecting block 72, and the connecting block further comprises a connecting bolt 74 connected between the mounting rod 32 and the bolt hole 73.

Through connecting bolt 74, the dismouting between realization mould 3 and the installation pole 32 that can be light, moreover, at the irregular rotation process of mount pad 31 always, there is certain relative motion between installation pole 32 and the mould 3, on the one hand is the buffering of coping mould 3 irregular rotation motion, on the other hand improves the continuity of mould 3 rotation process, makes mould 3 in the rotation process intermittent nature reverse rotation or negative acceleration rotation, is that the rotational moulding raw materials can strike the mould 3 inner wall in mould 3, makes the smooth each position that reaches in the mould 3 of rotational moulding raw materials.

Two buffer springs 75 are arranged in the sliding groove 71, one end of one buffer spring 75 is connected with one end of the sliding groove 71 in an abutting mode, and the other end of the other buffer spring 75 is connected with the connecting block 72; one end of another buffer spring 75 is connected to the other end of the slide groove 71 in an abutting manner, and the other end is connected to the connecting block 72. The arrangement of the buffer spring 75 can improve the reliability of the whole, so that the impact abrasion caused by irregular rotation of the die 3 among all parts is small, and the stability of the rotation of the die 3 is improved.

The sleeve 46 is fixedly connected with the control arm 1 through a connecting arm 8.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.