Locking device of rotary table injection molding machine

Abstract

The utility model relates to the technical field of injection molding, and provides a turntable injection molding mechanical locking device, which comprises an upper template and a lower template, the upper surface of the lower template is rotatably connected with a turntable, the periphery of the turntable is provided with gear teeth, and the upper surface of the turntable is fixedly connected with a rigid sealing ring; a fixing ring is fixedly connected to the interior of the lower die plate, a top bead is arranged in the fixing ring, an output rod is inserted into the fixing ring, and the outer surface of the output rod is sleeved with a first hydraulic cylinder. Through arrangement of a top bead and arrangement of a fixing groove, when the upper die plate and the lower die plate are fixed, fixation is firmer, through arrangement of special positions of the top bead and the fixing groove, when the upper die plate and the lower die plate are fixed, downward force can be applied to a fixing cap so that the upper die plate and the lower die plate can be fixed and sealed more closely, and through arrangement of an arc-shaped end of an output rod, the output rod can be fixed more firmly. When the top bead moves upwards, the top bead can be pushed away towards the periphery more smoothly, damage to the top bead is reduced, and the service life of the top bead is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of injection molding, and particularly relates to a locking device for a rotary table injection molding machine. Background Art

[0002] An injection molding machine, the full name of which is an injection molding machine, is a molding device used for the production of thermoplastic or thermosetting plastic products. It heats and melts plastic raw materials and then injects them into a closed mold cavity. After cooling and solidifying, the mold is opened to take out the product. Injection molding machines are widely used in the manufacture of various plastic products, such as automotive parts, electronic products, household appliances, toys, medical devices, etc. And a rotary table injection molding machine is an efficient plastic molding device that realizes multi-station injection molding through a rotating turntable.

[0003] The known authorized patent with the application number: 201721843560.9 discloses an inorganic column vertical rotary table injection molding machine: The utility model relates to the technical field of rotary table injection molding machines, and particularly refers to an inorganic column vertical rotary table injection molding machine; The utility model includes a frame, the overall shape of the frame is L-shaped, including a vertical part and a horizontal part. The upper end of the horizontal part of the frame is provided with a lower template, a turntable is installed on the lower template, a left mold cylinder and a right mold cylinder are installed on the vertical part of the frame, the bottom of the telescopic rods of the left mold cylinder and the right mold cylinder is connected to the upper template, the upper template is located directly above the turntable, and there is no machine column between the upper template and the lower template; The utility model realizes the design of no machine column, a super-large mold capacity, reduces the limitation of the mold size, makes it easier to install the mold, and the mold cylinders are designed on the upper template to realize an ultra-low workbench, which is convenient for operation.

[0004] However, it is found in the implementation of the related technology that the above technical solution has the following problems: When carrying out injection molding work, due to the setting of the turntable, there are relatively large problems with the closing effect of the upper and lower molds, which easily leads to situations such as overflow during injection molding and waste of raw materials.

[0005] Therefore, a locking device for a rotary table injection molding machine is proposed to solve the above problems. Summary of the Utility Model

[0006] The utility model proposes a locking device for a rotary table injection molding machine, which solves the problem that in the related technology, when carrying out injection molding work, due to the setting of the turntable, there are relatively large problems with the closing effect of the upper and lower molds, which easily leads to situations such as overflow during injection molding and waste of raw materials.

[0007] The technical solution of the utility model is as follows: A locking device for a rotary table injection molding machine, including: an upper template and a lower template, the upper surface of the lower template is rotatably connected with a turntable, gear teeth are arranged around the turntable, and a rigid sealing ring is fixedly connected to the upper surface of the turntable;

[0008] A fixing ring is fixedly connected inside the lower template. A top bead is arranged inside the fixing ring. An output rod is inserted into the fixing ring. A first hydraulic cylinder is sleeved on the outer surface of the output rod.

[0009] A fixing cap is fixedly connected inside the upper template. A fixing groove is formed inside the fixing cap. A groove corresponding to the rigid sealing ring is formed inside the upper template.

[0010] Preferably, a second hydraulic cylinder is fixedly connected to the upper surface of the upper template. The other end of the second hydraulic cylinder is fixedly connected to a top plate. One end of the top plate is fixedly connected to a moving rod.

[0011] Preferably, a support seat is fixedly connected to the lower surface of the lower template. A base is fixedly connected to the lower surface of the support seat. A ring sleeve is fixedly connected to the outer surface of the lower template.

[0012] Preferably, a motor is fixedly connected to the upper surface of the base. The output end of the motor is fixedly connected to a gear. The gear meshes with the gear teeth on the outer circumference of the turntable.

[0013] Preferably, the number of the top beads is four groups, and the number of each group is eight. When fixed by the fixing ring, the distance from the circle formed by the outer periphery of the top beads to the lower template is slightly less than the distance from the fixing groove to the bottom of the fixing cap.

[0014] Preferably, the length of the fixing cap at the lower surface of the upper template should be less than the length of the fixing ring at the upper surface of the lower template, and the top end of the output rod is arc-shaped.

[0015] The working principle and beneficial effects of the present utility model are as follows:

[0016] Through the arrangement of the top beads and the formation of the fixing groove, when the upper template and the lower template are fixed, the fixing is more reliable. Through the special position settings of the top beads and the fixing groove, when they are fixed, a downward force can be applied to the fixing cap to make the fixing and sealing of the two more intimate. Through the setting of the arc-shaped end of the output rod, when moving upward, the top beads can be more smoothly pushed away to the surrounding, and the damage to the top beads can be reduced, improving the service life of the top beads. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The following further describes the present utility model in detail with reference to the drawings and specific embodiments.

[0018] Figure 1 is a schematic three-dimensional structure diagram of the present utility model;

[0019] Figure 2 is a schematic cross-sectional three-dimensional structure diagram of the present utility model;

[0020] Figure 3Schematic diagram of the full-section front view proposed by the present utility model;

[0021] Figure 4 Schematic diagram of the sectional view of the fixing ring proposed by the present utility model.

[0022] In the figure: 1. Upper template; 2. Turntable; 3. Lower template; 4. Gear teeth; 5. Rigid sealing ring; 6. First hydraulic rod; 7. Output rod; 8. Fixing ring; 9. Top bead; 10. Fixing cap; 11. Fixing groove; 12. Second hydraulic cylinder; 13. Moving rod; 14. Ring sleeve; 15. Base; 16. Motor; 17. Gear; 18. Top plate; 19. Top plate. Specific implementation mode

[0023] Next, in combination with the embodiments of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the present utility model.

[0024] Implementation mode

[0025] Please refer to Figure 1 -4, the turntable injection molding machine locking device, comprising: an upper template 1 and a lower template 3. The upper surface of the lower template 3 is rotatably connected with a turntable 2. Gear teeth 4 are arranged around the turntable 2. The upper surface of the turntable 2 is fixedly connected with a rigid sealing ring 5;

[0026] The inside of the lower template 3 is fixedly connected with a fixing ring 8. A top bead 9 is arranged inside the fixing ring 8. An output rod 7 is inserted into the fixing ring 8. A first hydraulic cylinder 6 is sleeved on the outer surface of the output rod 7;

[0027] The inside of the upper template 1 is fixedly connected with a fixing cap 10. A fixing groove 11 is opened inside the fixing cap 10. A groove corresponding to the rigid sealing ring 5 is opened inside the upper template 1.

[0028] The technical solution provided by this embodiment is as follows: First, the second hydraulic cylinder 12 outputs, moving the upper template 1 downward to a preset position. Then, the first hydraulic cylinder 6 is activated. The first hydraulic cylinder 6 outputs the output rod 7 inside upward. The output rod 7 pushes the top beads 9 to move around and fixes them through the fixing grooves 11 inside the fixing cap 10. When fixing, due to the low position of the fixing grooves 11, the top beads 11 can apply a certain downward force to the fixing cap 10. Then, the fixing cap 10 drives the upper template 1 to apply a certain downward force. The rigid sealing ring 5 on the upper surface of the turntable 2 seals the turntable 2 and the upper template 1. Next, the injection molding work can be carried out. After completing the injection molding operation, first, the output rod 7 inside the first hydraulic cylinder 6 falls back, the top beads 9 lose support and fall back, and the support between the top beads 9 and the fixing cap 10 is lost. Next, start the second hydraulic cylinder 12 to lift the upper template 1. Then, after taking out the workpiece, start the motor 16 to drive the gear 17 to rotate a certain angle and reach the next working station to repeat the operation.

[0029] Further, the upper surface of the upper template 1 is fixedly connected with a second hydraulic cylinder 12. The other end of the second hydraulic cylinder 12 is fixedly connected with a top plate 18. One end of the top plate 18 is fixedly connected with a moving rod 13.

[0030] Specifically, through the setting of the second hydraulic cylinder 12, the upper template 1 can move up and down and has a relatively high downward pressure.

[0031] Further, the lower surface of the lower template 3 is fixedly connected with a support seat 19. The lower surface of the support seat 19 is fixedly connected with a base 15. The outer surface of the lower template 3 is fixedly connected with a collar 14.

[0032] Specifically, through the setting of the support group 3, the installation of the lower template 3 is more stable, avoiding the deformation of the lower template 3 caused by too few support points.

[0033] Further, the upper surface of the base 15 is fixedly connected with a motor 16. The output end of the motor 16 is fixedly connected with a gear 17. The gear 17 meshes with the gear teeth 4 on the outer circumference of the turntable 2.

[0034] Specifically, through the meshing of the gear 17 with the gear teeth 4, the turntable 2 can rotate in a timely manner.

[0035] Further, the number of the top beads 9 is four groups, and the number of each group is eight. When fixed through the fixing ring 8, the distance between the circle formed by the outer periphery of the top beads 9 and the lower template 3 is slightly less than the distance from the fixing groove 11 to the bottom of the fixing cap 10.

[0036] Specifically, through the above position settings of the top beads 9 and the fixing grooves 11, when fixing, it can provide a certain downward pressure on the upper template 1, making the connection closer and increasing the tightness during connection.

[0037] Further, the length of the fixing cap 10 on the lower surface of the upper template 1 should be less than the length of the fixing ring 8 on the upper surface of the lower template 3, and the top end of the output rod 7 is arc-shaped.

[0038] Specifically, through the setting of different lengths of the fixing cap 10 and the fixing ring 8, when fixing, it can avoid the conflict during fixed sealing caused by the length.

[0039] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. Rotary table injection molding machine locking device, including an upper template (1) and a lower template (3), characterized in that, The upper surface of the lower template (3) is rotatably connected with a turntable (2). Gear teeth (4) are arranged around the turntable (2). A rigid sealing ring (5) is fixedly connected to the upper surface of the turntable (2). A fixed ring (8) is fixedly connected inside the lower template (3). A top bead (9) is arranged inside the fixed ring (8). An output rod (7) is inserted into the fixed ring (8). A first hydraulic cylinder (6) is sleeved on the outer surface of the output rod (7). A fixed cap (10) is fixedly connected inside the upper template (1). A fixed groove (11) is formed inside the fixed cap (10). A groove corresponding to the rigid sealing ring (5) is formed inside the upper template (1).

2. The turntable injection molding machine locking device according to claim 1, wherein: A second hydraulic cylinder (12) is fixedly connected to the upper surface of the upper template (1). The other end of the second hydraulic cylinder (12) is fixedly connected to a top plate (18). A moving rod (13) is fixedly connected to one end of the top plate (18).

3. The turntable injection molding machine locking device according to claim 1, characterized in that: A support base (19) is fixedly connected to the lower surface of the lower template (3). A base (15) is fixedly connected to the lower surface of the support base (19). A collar (14) is fixedly connected to the outer surface of the lower template (3).

4. The turntable injection molding machine locking device according to claim 3, characterized in that: A motor (16) is fixedly connected to the upper surface of the base (15). The output end of the motor (16) is fixedly connected to a gear (17). The gear (17) meshes with the gear teeth (4) on the outer periphery of the turntable (2).

5. The rotary table injection molding machine locking device according to claim 1, characterized in that: The number of the top beads (9) is four groups, and the number of each group is eight. When fixed by the fixed ring (8), the distance from the circle formed by the outer periphery of the top beads (9) to the lower template (3) is slightly less than the distance from the fixed groove (11) to the bottom of the fixed cap (10).

6. The rotary table injection molding machine locking device according to claim 1, characterized in that: The length of the fixed cap (10) on the lower surface of the upper template (1) should be less than the length of the fixed ring (8) on the upper surface of the lower template (3). The top end of the output rod (7) is arc-shaped.

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