Turntable, multi-component injection molding mobile template and multi-component injection molding machine

Abstract

The present invention is applicable to the field of mechanical manufacturing technology, and provides a turntable, a multi-component injection molding mechanical template, and a multi-component injection molding machine. The turntable includes: a turntable body and a transmission tooth structure arranged on the circumference of the turntable body; the transmission tooth structure includes a movable tooth block, and the movable tooth block is arranged on the circumference of the turntable body through an adjustment structure, and the adjustment structure is used to adjust the root circle radius of the transmission teeth on the movable tooth block. In this scheme, by arranging a movable tooth block in the transmission tooth structure of the turntable, the root circle radius of the transmission teeth on the movable tooth block can be adjusted. When the driving gear is engaged with the transmission tooth structure on the turntable to drive the turntable to rotate, the center distance between the driving gear and the turntable remains unchanged, and the root circle radius of the transmission teeth on the movable tooth block is increased by adjusting. When the driving gear is engaged with the transmission teeth on the movable tooth block, the tooth gap between them is reduced. When the position where the transmission teeth on the movable tooth block are engaged with the driving gear is used as the positioning position for the turntable to drive the mold to rotate, the tooth gap is reduced, and the positioning accuracy of the turntable is effectively improved.

Description

Technical Field

[0001] The invention belongs to the technical field of mechanical manufacturing, and in particular relates to a turntable, a multi-component injection molding motor template and a multi-component injection molding machine. Background Art

[0002] Injection molding is a method of producing industrial products. Products usually use rubber injection molding and plastic injection molding. Injection molding equipment is the main molding equipment that uses plastic molding molds to make thermoplastics or thermosetting plastics into plastic products of various shapes. Multi-component injection molding machines generally have two or more sets of molds. The molds are fixed on the turntable of the multi-component injection molding motor template, and the turntable drives the mold to rotate to achieve multi-component injection.

[0003] The turntable on the existing multi-component injection molding motorized template is generally driven by transmission gear meshing. A circle of transmission gears is arranged on the outer circumference of the turntable, and the driving gear meshing with the transmission gear on the turntable is driven by the motor to rotate, thereby realizing the transmission of the turntable.

[0004] However, in actual applications, in order to reduce noise and top tooth phenomena during rapid rotation, a certain tooth gap is generally retained between the driving gear and the transmission teeth on the turntable, which will result in poor positioning accuracy of the turntable during transmission. Summary of the invention

[0005] The purpose of the embodiment of the present invention is to provide a turntable, aiming to solve the technical problem of poor positioning accuracy of the turntable on the movable platen in the existing multi-component injection molding machine when the turntable is meshed with the driving gear for transmission.

[0006] The embodiment of the present invention is implemented as follows: the turntable comprises: a turntable body and a transmission tooth structure arranged on the circumference of the turntable body;

[0007] The transmission tooth structure comprises a movable tooth block, and the movable tooth block is arranged on the circumference of the turntable body through an adjustment structure, and the adjustment structure is used to adjust the root circle radius of the transmission teeth on the movable tooth block.

[0008] Another object of the embodiment of the present invention is to provide a multi-component injection molding dynamic template, the multi-component injection molding dynamic template includes a dynamic template body, a driving gear arranged on the dynamic template body and the above-mentioned turntable;

[0009] The driving gear is rotatably arranged on the movable template body, and the driving gear is used to drive the rotating disk to rotate;

[0010] The turntable is used for installing the mold.

[0011] Another object of an embodiment of the present invention is to provide a multi-component injection molding machine, which includes the multi-component injection molding motor mold plate mentioned above, and the multi-component injection molding motor mold plate is used to drive the mold to rotate.

[0012] A turntable provided by an embodiment of the present invention can adjust the root circle radius of the transmission teeth on the movable tooth block by arranging a movable tooth block in the transmission tooth structure of the turntable, so that when the driving gear is meshed with the transmission tooth structure on the turntable to drive the turntable to rotate, the center distance between the driving gear and the turntable remains unchanged, and the root circle radius of the transmission teeth on the movable tooth block is increased by adjusting the driving gear and the transmission teeth on the movable tooth block. When the driving gear and the transmission teeth on the movable tooth block are meshed, the tooth gap between them is reduced. When the position where the transmission teeth on the movable tooth block are meshed with the driving gear is used as the positioning position for the turntable to drive the mold to rotate, the tooth gap is reduced, thereby effectively improving the positioning accuracy of the turntable. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 A schematic structural diagram of a multi-component injection molding motorized template provided by an embodiment of the present invention;

[0014] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0015] Figure 3 for Figure 1 The enlarged view of point B in the middle;

[0016] Figure 4 A schematic diagram of the structure of a movable gear block and a turntable body provided in an embodiment of the present invention;

[0017] Figure 5 A schematic diagram of the installation structure of a driving gear in a multi-component injection molding motor mold plate according to an embodiment of the invention;

[0018] In the attached drawings: 1. turntable body; 11. transmission gear structure; 12. movable gear block; 13. adjustment gasket; 2. movable template body; 21. gear mounting seat; 3. driving gear; 4. reducer; 5. driving motor. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0020] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0021] Embodiment 1

[0022] like Figure 1-3As shown, an embodiment of the present invention provides a turntable for a multi-component injection molding motorized template, the turntable comprising: a turntable body 1 and a transmission tooth structure 11 arranged on the circumference of the turntable body 1;

[0023] The transmission tooth structure 11 includes a movable tooth block 12 . The movable tooth block 12 is arranged on the circumference of the turntable body 1 through an adjustment structure. The adjustment structure is used to adjust the root circle radius of the transmission teeth on the movable tooth block 12 .

[0024] In the embodiment of the present invention, the movable tooth block 12 may include a plurality of transmission teeth, and the tooth shape of the transmission tooth structure 11 on the movable tooth block 12 is completely the same as the tooth shape of the transmission tooth structure 11 fixedly arranged on the circumference of the turntable body 1. This embodiment does not limit the setting position and setting quantity of the movable tooth block 12 on the circumference of the turntable body 1. The setting position and setting quantity of the movable tooth block 12 on the circumference of the turntable body 1 can be specifically designed according to the position where the mold needs to be positioned when the turntable drives the mold to rotate. For example, during the transmission process of the turntable, the turntable needs to be at 0 degrees (with Figure 1 The position of the turntable shown in the middle is 0 degrees) and 180 degrees. When the turntable is at 0 degrees, a movable tooth block 12 is set at the meshing position of the turntable and the driving gear 3. Similarly, when the turntable is at 180 degrees, a movable tooth block 12 is set at the meshing position of the turntable and the driving gear 2; for the three-color machine turntable, the movable tooth blocks 12 can be set at 0 degrees, 120 degrees and 240 degrees respectively, but are not limited to this.

[0025] In the embodiment of the present invention, the specific structure of the adjustment structure is not limited. For example, Figure 4 As shown, the adjustment structure may include an adjustment gasket 13, which is arranged between the circumference of the turntable body 1 and the movable tooth block 12, and then the movable tooth block 12 is fixedly connected to the turntable body 1, so that the size of the adjustment change of the root circle radius of the transmission teeth on the movable tooth block 12 is the thickness of the adjustment gasket 13, so that the root circle radius can be adjusted by replacing the adjustment gasket 13 of different thicknesses. In this way, the root circle radius of the transmission teeth on the movable tooth block 12 is larger than the root circle radius of the fixed transmission teeth on the circumference of the turntable by the size of the thickness of the adjustment gasket. When the transmission teeth on the movable tooth block 12 of the turntable are meshed with the driving gear 3, the tooth gap between them is reduced, thereby improving the accuracy of the turntable transmission positioning. This embodiment does not limit the fixed connection method between the movable tooth block 12 and the turntable body 1. For example, the movable tooth block 12 and the turntable body 1 can be fixedly connected by threaded fasteners.

[0026] A turntable provided by an embodiment of the present invention can adjust the root circle radius of the transmission teeth on the movable tooth block 12 by arranging a movable tooth block 12 in the transmission tooth structure 11 of the turntable, so that when the driving gear 3 is meshed with the transmission tooth structure 11 on the turntable to drive the turntable to rotate, the center distance between the driving gear 3 and the turntable remains unchanged, the root circle radius of the transmission teeth on the movable tooth block 12 is increased by adjusting, and the tooth gap between the driving gear 3 and the transmission teeth on the movable tooth block 12 is reduced when the driving gear 3 is meshed with the transmission teeth on the movable tooth block 12, and the tooth gap between the transmission teeth fixed on the circumference of the turntable body 1 and the driving gear 3 between two or more movable tooth blocks 12 remains unchanged, and the driving gear 3 can still reduce noise and top tooth phenomenon under fast rotation when the driving gear 3 is meshed with the transmission teeth directly fixed on the circumference of the turntable body 1. When the rotation is fast to the point where the driving gear 3 is meshed with the transmission teeth on the movable tooth block 12 (that is, when the rotation is fast to the positioning position of the turntable), the rotation speed is reduced, and at this time, the tooth gap between the driving gear 3 and the transmission teeth on the movable tooth block 12 is also reduced, thereby effectively improving the positioning accuracy of the turntable.

[0027] Embodiment 2

[0028] In another embodiment of the present invention, the turntable body 1 is provided with a mounting groove, which is used to install the movable tooth block 12, and a positioning structure (not shown in the figure) is provided between the mounting groove and the movable tooth block 12, and the positioning structure is used to limit the installation position of the movable tooth block 12 in the circumferential direction of the turntable body 1.

[0029] In the embodiment of the present invention, there is no limitation on the specific structure of the mounting groove. For example, the mounting groove structure can be configured to include a surface parallel to the circumferential surface of the turntable body 1 and a surface parallel to the end surface of the turntable body 1. In order to facilitate the movable tooth block 12 to be installed in the mounting groove, the movable tooth block 12 and the mounting groove can be loosely matched in the circumferential direction. It is also necessary to ensure that the installation position of the movable tooth block 12 in the mounting groove along the circumference of the turntable can be limited by a positioning structure. This embodiment does not limit the specific structure of the positioning structure. For example, the positioning structure can include a positioning groove and a positioning block that cooperates with the positioning groove. The positioning groove can be provided on one of the movable tooth block 12 and the turntable body 1, and the positioning block is provided on the other of the movable tooth block 12 and the turntable body 1, and the positioning groove or the positioning block is provided on the surface of the mounting groove parallel to the end surface of the turntable body 1.

[0030] A turntable provided in an embodiment of the present invention has a mounting groove arranged on a turntable body 1 so that a movable tooth block 12 is installed in the mounting groove, and a positioning structure is arranged to limit the mounting position of the movable tooth block 12 in the circumferential direction of the turntable body 1, thereby effectively ensuring the accuracy of the mounting position of the movable tooth block 12 in the circumferential direction of the turntable body 1 and improving the transmission stability of the turntable and the driving gear 3.

[0031] Embodiment 3

[0032] In another embodiment of the present invention, a multi-component injection molding motorized template is provided, such as Figure 1 As shown, the multi-component injection molding dynamic template includes a dynamic template body 2, a driving gear 3 arranged on the dynamic template body 2, and the above-mentioned turntable;

[0033] The driving gear 3 is rotatably disposed on the movable template body 2, and the driving gear 3 is used to drive the turntable to rotate;

[0034] The turntable is used for installing the mold.

[0035] In the embodiment of the present invention, the specific structure of the movable template body 2 is not limited. The turntable can be rotatably arranged on the movable template body 2 through the bearing. The movable template body 2 can also be provided with a gear mounting seat 21. The driving gear 3 is rotatably mounted on the gear mounting seat 21 through the rotating shaft. Figure 5 shown.

[0036] In an embodiment of the present invention, the multi-component injection molding motor template also includes a driving motor 5 and a reducer 4. The output shaft of the driving motor 5 is connected to the reducer 4. The output shaft of the reducer 4 can be connected to the rotating shaft of the driving gear 3 to drive the driving gear 3 to rotate.

[0037] A multi-component injection molding motorized template provided by an embodiment of the present invention is provided with the above-mentioned turntable. Since the above-mentioned turntable is provided with a movable tooth block 12, the transmission teeth on the movable tooth block 12 can adjust the root circle radius of the transmission teeth by adjusting the gasket 13, so that the tooth gap between the transmission teeth on the movable tooth block 12 of the turntable and the driving gear 3 can be reduced when they are meshed. When the turntable is rotated to the positioning position, the driving gear 3 just meshes with the transmission teeth on the movable tooth block 12, effectively improving the accuracy of the turntable transmission positioning. At the same time, the driving gear 3 maintains the original tooth gap when meshing with the transmission teeth outside the movable tooth block 12 on the turntable, and can still reduce noise and top tooth phenomena during rapid rotation.

[0038] Embodiment 4

[0039] In another embodiment of the present invention, a multi-component injection molding machine is provided. The multi-component injection molding machine includes the multi-component injection molding motorized template described above. The multi-component injection molding motorized template is used to drive the mold to rotate.

[0040] A multi-component injection molding machine provided by an embodiment of the present invention can improve the positioning accuracy of the multi-component injection molding motorized template during the rotation of the mold by setting the above-mentioned multi-component injection molding motorized template, thereby ensuring the quality of the injection molded product.

[0041] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A turntable for multi-component injection molding motorized template, characterized in that: The turntable comprises: a turntable body and a transmission tooth structure arranged on the circumference of the turntable body; The transmission tooth structure comprises a movable tooth block, which is arranged on the circumference of the turntable body through an adjustment structure, and the adjustment structure comprises an adjustment gasket, which is arranged between the circumference of the turntable body and the movable tooth block, and the movable tooth block is fixedly connected to the turntable body, and the adjustment dimension of the root circle radius of the transmission teeth on the movable tooth block is the thickness of the adjustment gasket; The root circle radius of the transmission teeth on the movable gear block is adjusted by replacing adjusting gaskets of different thicknesses; The turntable body is provided with a mounting groove, and the mounting groove is used for mounting the movable gear block.

2. A turntable according to claim 1, characterized in that: The movable gear block is fixed to the turntable body by a threaded fastener.

3. A turntable according to claim 1, characterized in that: A positioning structure is provided between the installation groove and the movable tooth block, and the positioning structure is used to limit the installation position of the movable tooth block in the circumferential direction of the turntable body.

4. A turntable according to claim 3, characterized in that: The positioning structure comprises a positioning groove and a positioning block matched with the positioning groove, the positioning groove is arranged on one of the movable tooth block and the turntable body, and the positioning block is arranged on the other of the movable tooth block and the turntable body.

5. A multi-component injection molding mechanical template, characterized in that: The multi-component injection molding movable template comprises a movable template body, a driving gear arranged on the movable template body, and a turntable according to any one of claims 1 to 4; The driving gear is rotatably arranged on the movable template body, and the driving gear is used to drive the rotating disk to rotate; The turntable is used for installing the mold.

6. A multi-component injection molding motorized template according to claim 5, characterized in that: The multi-component injection molding dynamic template also includes a driving motor and a reducer, the output shaft of the driving motor is connected to the reducer, the output shaft of the reducer is connected to the driving gear, and the driving gear is rotatably arranged on the dynamic template body through a bearing.

7. A multi-component injection molding machine, characterized in that: The multi-component injection molding machine comprises a multi-component injection molding motorized template as described in claim 5 or 6, and the multi-component injection molding motorized template is used to drive the mold to rotate.

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