Improved rotational molding machine

Abstract

The utility model provides an improved rotational molding machine, and belongs to the technical field of rotational molding machines. The rotational molding machine solves the problem that an existing rotational molding machine cannot enable melted powder to be evenly distributed. The utility model discloses an improved rotational molding machine. The improved rotational molding machine comprises a supporting seat, a rotating arm and a mold opening and closing assembly, according to the mold opening and closing device, after people feed powder into the mold opening and closing assembly, the mold opening and closing assembly is closed, the mold opening and closing assembly heats the powder in an electric heating mode so that the powder can be melted, in the process, the rotating arm rotates around the X axis or the Y axis of the supporting base, meanwhile, the mold opening and closing assembly rotates around the Z axis of the rotating arm, and therefore the mold opening and closing assembly can melt the powder. Therefore, the mold opening and closing assembly can rotate in the space, molten powder liquid can smoothly flow in the mold opening and closing assembly, and a finished product obtained through rotational molding can be more uniform.

Description

Technical Field

[0001] The utility model belongs to the technical field of roto-molding machines and relates to an improved roto-molding machine. Background Art

[0002] Roto-molding machine is a machine used to make hollow plastic products. Usually, the molding of such plastic products is also called rotational molding, rotational molding or rotational molding.

[0003] The inventor believes that during the rotation of the existing roto-molding machine, the mold rotates in one direction, and the rotation direction of the roto-molding mold is relatively single, which makes it difficult for the molten raw material in the mold cavity to be evenly distributed in the inner cavity of the mold during the roto-molding process, resulting in low quality of the roto-molded product. Summary of the invention

[0004] The utility model aims to solve the above problems in the prior art and proposes an improved rotational molding machine which can evenly distribute the melted powder.

[0005] The purpose of the utility model can be achieved through the following technical solutions: an improved rotational molding machine, comprising:

[0006] A support base, on which a rotating arm is movably mounted, on which a mold opening and closing assembly is movably mounted, the rotating arm can rotate around an X-axis or a Y-axis of the support base, and the mold opening and closing assembly can rotate around a Z-axis of the rotating arm.

[0007] In the above-mentioned improved rotational molding machine, the mold opening and closing assembly includes a lower mold plate movably mounted on a rotating arm, an upper mold plate movably mounted directly above the lower mold plate, and a pair of driving members and a pair of guide members are provided between the lower mold plate and the upper mold plate.

[0008] In the above-mentioned improved rotational molding machine, the two driving members are respectively arranged at the diagonal line of the upper template, and the two guiding members are respectively arranged at the other diagonal line of the upper template.

[0009] In the above-mentioned improved rotational molding machine, each of the driving members comprises a driving cylinder body arranged on the lower mold plate, and a driving rod is movably arranged on the driving cylinder body.

[0010] In the above-mentioned improved rotational molding machine, the lower template is provided with a first guide sleeve corresponding to the driving cylinder body, the driving rod movably passes through the end of the first guide sleeve, a second guide sleeve is movably provided outside the first guide sleeve, one end of the driving rod is connected to the second guide sleeve, and the upper template is connected to the second guide sleeve.

[0011] In the above-mentioned improved rotational molding machine, each of the guide members comprises a fixed sleeve arranged on the lower template, a movable sleeve is arranged outside the fixed sleeve, and the movable sleeve is connected to the upper template.

[0012] In the above-mentioned improved rotational molding machine, a first motor is provided in the support seat, a first rotating shaft is provided on the side surface of the rotating arm facing the support seat, one end of the first rotating shaft is movably inserted in the support seat, a first gear is provided on the first motor, and a second gear meshing with the first gear is installed on the first rotating shaft.

[0013] In the above-mentioned improved rotational molding machine, a second rotating shaft connected to the lower template is movably provided on the rotating arm, a second motor is provided at the lower end surface of the rotating arm, and the second motor is connected to the second rotating shaft through a transmission member.

[0014] In the above-mentioned improved rotational molding machine, a plurality of cooling fans are provided on the side of the rotating arm.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] In the utility model, after people send the powder into the opening and closing mold assembly, the opening and closing mold assembly is closed, and the opening and closing mold assembly uses electric heating to heat the powder to melt the powder. During this process, the rotating arm rotates around the X-axis or Y-axis of the support seat, and at the same time, the opening and closing mold assembly rotates around the Z-axis of the rotating arm. In this way, the opening and closing mold assembly can be rotated in space, so that the melted powder liquid can flow smoothly in the opening and closing mold assembly, so that the finished product of the rotational molding can be more uniform. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural diagram of an improved rotational molding machine.

[0018] Figure 2 It is a structural diagram of the rotational molding machine from another perspective.

[0019] Figure 3 It is a structural diagram of the rotational molding machine after removing the mold opening and closing components.

[0020] Figure 4 yes Figure 3 Schematic diagram of the structure from another perspective.

[0021] Figure 5 It is a structural diagram of the driving parts.

[0022] Figure 6 yes Figure 5 Section view at AA.

[0023] Figure 7 It is a structural schematic diagram of the guide member.

[0024] Figure 8 yes Figure 7 Sectional view at BB. DETAILED DESCRIPTION

[0025] 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.

[0026] like Figure 1 — Figure 8 As shown, the improved rotational molding machine of the utility model comprises a support seat 100 , a rotating arm 200 and a mold opening and closing assembly 300 .

[0027] The support base 100 is movably mounted with a rotating arm 200, and the rotating arm 200 is movably mounted with a mold opening and closing assembly 300. The rotating arm 200 can rotate around the X-axis or Y-axis of the support base 100, and the mold opening and closing assembly 300 can rotate around the Z-axis of the rotating arm 200. When people deliver powder into the mold opening and closing assembly 300, the mold opening and closing assembly 300 will be closed, and the mold opening and closing assembly 300 uses electric heating to heat the powder to melt the powder. In this process, the rotating arm 200 The opening and closing mold assembly 300 rotates around the X-axis or Y-axis of the support seat 100, and at the same time, the opening and closing mold assembly 300 rotates around the Z-axis of the rotating arm 200. In this way, the opening and closing mold assembly 300 can be rotated in space, so that the melted powder liquid can flow smoothly in the opening and closing mold assembly 300, so that the rotationally molded product can be more uniform; when the rotational molding process is completed, the rotational molding machine cools the opening and closing mold assembly 300 so that the finished product can be fixed. After that, the opening and closing mold assembly 300 is opened, and people can take out the finished product.

[0028] like Figure 1 , Figure 5 — Figure 8 As shown, the opening and closing mold assembly 300 includes a lower mold plate 320 movably mounted on the rotating arm 200, an upper mold plate 310 is movably mounted directly above the lower mold plate 320, a pair of driving members 330 and a pair of guide members 340 are provided between the lower mold plate 320 and the upper mold plate 310, the two driving members 330 are respectively arranged at the diagonal of the upper mold plate 310, and the two guide members 340 are respectively arranged at the other diagonal of the upper mold plate 310.

[0029] Before working, people need to install the upper mold suitable for the rotational molding machine on the upper template 310, and install the lower mold suitable for the rotational molding machine (not marked in the figure) on the lower template 320. During the rotational molding process, the driving member 330 drives the upper template 310 to move in the direction of the lower template 320. At the same time, the guide member 340 also guides the upper template 310 to move relative to the lower template 320 until a predetermined gap is reached between the upper mold and the lower mold. In this process, the upper mold and the lower mold are powered on at the same time and electrically heated so that the upper mold and the lower mold are aligned. After the mold reaches a predetermined gap and a preset time has passed, the powder between the upper mold and the lower mold can be melted smoothly. When the rotational molding process is completed, the upper mold and the lower mold are powered off and cooled, the driving member 330 moves the upper mold plate 310 away from the lower mold plate 320. At the same time, the upper mold plate 310 also drives the upper mold to move away from the lower mold, that is, the opening and closing mold assembly 300 is realized. In this way, people can grab the cooled finished product from the lower mold, thereby completing the rotational molding process of converting powder into finished products.

[0030] Each of the driving members 330 includes a driving cylinder 331 disposed on the lower template 320, a driving rod 332 is movably disposed on the driving cylinder 331, the lower template 320 is provided with a first guide sleeve 333 corresponding to the driving cylinder 331, the driving rod 332 movably passes through the end of the first guide sleeve 333, a second guide sleeve 334 is disposed on a movable sleeve 342 outside the first guide sleeve 333, one end of the driving rod 332 is connected to the second guide sleeve 334, and the upper template 310 is connected to the second guide sleeve 334. When the driving cylinder 331 pushes the driving rod 332 to move, because the driving rod 332 is connected to the second guide sleeve 334, and the second guide sleeve 334 is connected to the upper template 310, the driving cylinder 331 and the first guide sleeve 333 are both installed on the lower template 320, and the movable sleeve 342 of the second guide sleeve 334 is on the first guide sleeve 333, so that the driving rod 332 can drive the second guide sleeve 334 to move in a directional manner along the trajectory of the first guide sleeve 333, that is, the lifting and lowering of the upper template 310 can be realized.

[0031] Each of the guide members 340 includes a fixed sleeve 341 arranged on the lower template 320, and a movable sleeve 342 is provided outside the fixed sleeve 341, and the movable sleeve 342 is connected to the upper template 310; when the upper template 310 is raised or lowered, the upper template 310 will drive the movable sleeve 342 to move relative to the fixed sleeve 341, so that the movable sleeve 342 can move in a directional manner along the trajectory of the fixed sleeve 341.

[0032] Furthermore, the upper template 310 has four corners, and the two driving members 330 are located on a diagonal line of the upper template 310, the two guide members 340 are located on another diagonal line of the upper template 310, and the first guide sleeve 333 is arranged in parallel with the fixed sleeve 341. In this way, it can be ensured that the movement direction of the movable sleeve 342 is parallel to the movement direction of the second guide sleeve 334, so that the upper template 310 can move in a directional manner relative to the lower template 320.

[0033] like Figure 1 — Figure 4 As shown, a first motor 110 is provided in the support base 100, and a first rotating shaft 120 is provided on a side surface of the rotating arm 200 facing the support base 100, one end of the first rotating shaft 120 is movably inserted in the support base 100, and a first gear 130 is provided on the first motor 110, and a second gear 140 meshing with the first gear 130 is installed on the first rotating shaft 120. When the first motor 110 drives the first gear 130 to rotate, the first gear 130 will drive the second gear 140 and the first rotating shaft 120 to rotate at the same time, and the first rotating shaft 120 is connected to the rotating arm 200, and the first rotating shaft 120 is located exactly on the X-axis or Y-axis of the support base 100, so as to realize the rotation of the rotating arm 200 around the X-axis or Y-axis of the support base 100.

[0034] A second rotating shaft 210 connected to the lower template 320 is movably provided on the rotating arm 200, and a second motor 220 is provided at the lower end surface of the rotating arm 200. The second motor 220 and the second rotating shaft 210 are connected to each other through a transmission member 230. Specifically, the transmission member 230 includes a third gear (not marked in the figure) connected to the second motor 220 and a fourth gear (not marked in the figure) connected to the second rotating shaft 210. The fourth gear is meshed with the third gear. When the second motor 220 drives the third gear to rotate, the third gear will drive the fourth gear and the second rotating shaft 210 to rotate at the same time. The second rotating shaft 210 is connected to the lower template 320. The second rotating shaft 210 is located on the Z-axis of the rotating arm 200, so that the lower template 320 can rotate around the Z-axis of the rotating arm 200.

[0035] A plurality of cooling fans 240 are provided on the side of the rotating arm 200. When the upper mold and the lower mold need to be cooled, each cooling fan 240 is turned on and blows air to the upper mold and the lower mold so that the upper mold and the lower mold can be cooled quickly, thereby improving the hardness of the finished product.

[0036] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0037] In addition, in the present invention, the descriptions of "first", "second", "one", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0038] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

Claims

1. An improved rotational molding machine, characterized in that: include: A support base, on which a rotating arm is movably mounted, on which a mold opening and closing assembly is movably mounted, the rotating arm can rotate around an X-axis or a Y-axis of the support base, and the mold opening and closing assembly can rotate around a Z-axis of the rotating arm.

2. An improved rotational molding machine according to claim 1, characterized in that: The opening and closing mold assembly comprises a lower mold plate movably mounted on a rotating arm, an upper mold plate movably mounted directly above the lower mold plate, and a pair of driving members and a pair of guiding members are arranged between the lower mold plate and the upper mold plate.

3. An improved rotomolding machine according to claim 2, characterized in that: The two driving members are respectively arranged at the diagonal lines of the upper template, and the two guiding members are respectively arranged at the other diagonal lines of the upper template.

4. An improved rotomolding machine according to claim 2, characterized in that: Each of the driving components comprises a driving cylinder body arranged on the lower template, and a driving rod is movably arranged on the driving cylinder body.

5. An improved rotomolding machine according to claim 4, characterized in that: The lower template is provided with a first guide sleeve corresponding to the driving cylinder body, the driving rod movably passes through the end of the first guide sleeve, a second guide sleeve is movably provided outside the first guide sleeve, one end of the driving rod is connected to the second guide sleeve, and the upper template is connected to the second guide sleeve.

6. An improved rotomolding machine according to claim 2, characterized in that: Each of the guide members comprises a fixed sleeve arranged on the lower template, a movable sleeve is arranged outside the fixed sleeve, and the movable sleeve is connected to the upper template.

7. An improved rotomolding machine according to claim 1, characterized in that: A first motor is provided in the support seat, a first rotating shaft is provided on a side surface of the rotating arm facing the support seat, one end of the first rotating shaft is movably inserted in the support seat, a first gear is provided on the first motor, and a second gear meshing with the first gear is installed on the first rotating shaft.

8. An improved rotomolding machine according to claim 1, characterized in that: A second rotating shaft connected to the lower template is movably provided on the rotating arm, a second motor is provided at the lower end surface of the rotating arm, and the second motor is connected to the second rotating shaft through a transmission member.

9. An improved rotomolding machine according to claim 1, characterized in that: A plurality of cooling fans are arranged on the side of the rotating arm.

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