Mold closing mechanism of injection molding machine

Abstract

The utility model relates to the technical field of injection molding machines, in particular to a mold closing mechanism of an injection molding machine, which is characterized in that a hydraulic cylinder is operated to extend, so that a movable frame drives a movable mold component and a fixed mold to be closed, and then a spiral plastic extruding machine extrudes molten liquid into an inner cavity of the fixed mold through a feeding hole to process an injection molding part. Then the hydraulic cylinder is operated to be shortened, so that the movable mold assembly and the injection molding part are far away from the fixed mold, then the ejector pin assembly ejects the injection molding part on the movable mold assembly away from the movable mold assembly, and automatic demolding of the injection molding part is achieved; comprising a supporting frame, a fixed mold, hydraulic cylinders, a moving frame and a feeding hole, the fixed mold is arranged at the right end of the interior of the supporting frame, the feeding hole is formed in the fixed mold, the two hydraulic cylinders are arranged at the left end of the supporting frame, and the moving ends of the two hydraulic cylinders extend into the supporting frame and are connected with the left end of the moving frame. A movable mold assembly is arranged on the movable frame, and an ejector pin assembly is arranged on the movable mold assembly.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molding machines, in particular to a mold clamping mechanism of an injection molding machine. Background Art

[0002] The characteristics of injection molding are: it can form plastic parts with complex shapes, precise dimensions and glossy surfaces in one go; the mold can be quickly replaced in order to manufacture products that meet market demand; it is particularly suitable for the molding of engineering plastics and special plastics to obtain products with special properties and special uses; the clamping mechanism is one of the important components of the injection molding machine.

[0003] In the prior art, a patent document with announcement number CN214820613U discloses a mold clamping mechanism for an injection molding machine, including a frame, a base, a movable mold base, a movable mold, a fixed mold base and a fixed mold, the base and the fixed mold base are fixedly connected to the frame, a pull rod is passed through the base and the fixed mold base, the fixed mold is fixedly connected to a side of the fixed mold base close to the base, the movable mold base is sleeved on the pull rod, a movable mold is provided on a side of the movable mold base close to the fixed mold base, and also includes a locking assembly, the locking assembly includes a support plate and a sleeve, the support plate is provided on a side of the fixed mold base away from the base, the sleeve is fixedly connected to a side of the support plate close to the pull rod, the sleeve is sleeved on an end of the pull rod away from the base, a plurality of locking blocks are fixedly connected to the inner circumferential side wall of the sleeve, and a locking groove for embedding the locking blocks is provided on the pull rod.

[0004] It was found during use that after the above device completed the processing of the injection molded parts, the injection molded parts in the movable mold still needed to be removed by the staff, which affected the processing efficiency and increased the labor intensity of the staff. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a mold clamping mechanism for an injection molding machine with improved convenience.

[0006] The utility model discloses a mold clamping mechanism for an injection molding machine, comprising a support frame, a fixed mold, a hydraulic cylinder, a movable frame and a feed hole, wherein the fixed mold is arranged at the right end inside the support frame, the fixed mold is arranged with the feed hole, and two groups of hydraulic cylinders are arranged at the left end of the support frame, the movable ends of the two groups of hydraulic cylinders are both extended into the interior of the support frame and are both connected to the left end of the movable frame, and further comprising a movable mold assembly and an ejector assembly, the movable mold assembly is arranged on the movable frame, and the ejector assembly is arranged on the movable mold assembly; the hydraulic cylinder is operated to extend, so that the movable mold assembly is driven by the movable frame to clamp the mold with the fixed mold, and then the spiral extruder is used to squeeze the molten liquid into the inner cavity of the fixed mold through the feed hole to process the injection molded part, and then the hydraulic cylinder is operated to shorten, so that the movable mold assembly and the injection molded part are away from the fixed mold, and then the ejector assembly ejects the injection molded part on the movable mold assembly from the movable mold assembly, so that the injection molded part is automatically removed from the mold and the convenience is improved.

[0007] Preferably, the movable mold assembly includes a light bar and a movable mold, a plurality of groups of light bars are arranged at the right end of the movable frame, the movable mold is mounted on the light bars, the plurality of groups of light bars are respectively slidably connected with the fixed mold and the support frame, a ejection hole is arranged on the movable mold, and an ejector pin assembly is arranged in the ejection hole; the movable frame drives the movable mold and the fixed mold to close the mold through the plurality of groups of light bars, and since the light bars are slidably connected with the fixed mold and the support frame, the closing stability of the movable mold and the fixed mold is improved.

[0008] Preferably, the ejector assembly includes an ejector, a movable plate, a spring and a round rod, a group of ejectors are slidably arranged in each group of ejector holes, the left ends of the multiple groups of ejectors are connected to the right end of the movable plate, multiple groups of springs are arranged between the movable plate and the movable mold, and a group of springs are respectively mounted on the outer side of each group of ejectors, the left end of the movable plate is in contact with the right end of the movable frame, the left end of the movable plate is arranged with a round rod, and the left end of the round rod passes through the movable frame and extends to the left side of the movable frame; when the movable mold and the fixed mold are molded together, the right end of the ejector is flush with the mold cavity of the movable mold After the processing is completed, the hydraulic cylinder is shortened, so that the moving frame drives the movable mold away from the fixed mold through the light rod, and multiple groups of ejectors move synchronously with the movable mold. When the movable mold continues to move to the left, the left end of the round rod contacts the inner left end of the support frame, so that the moving plate drives the multiple groups of ejectors and the movable mold to move towards each other, so that the ejector pushes the injection molded part inside the movable mold away. When the movable mold and the fixed mold are close, multiple groups of springs bring the moving plate and the moving frame close together, so that the right end of the ejector is flush with the mold cavity of the movable mold again, which improves convenience.

[0009] Preferably, it also includes a conveying component, which is arranged inside the support frame, and the conveying component includes rollers, auxiliary rollers, a motor, a conveyor belt and a conveyor frame, which is installed inside the support frame, and two groups of rollers are rotatably arranged inside the conveying frame, and a group of conveyor belts are mounted on the outer ends of the two groups of rollers, and multiple groups of auxiliary rollers are rotatably arranged inside the conveying frame, and the multiple groups of auxiliary rollers are between the two groups of rollers. A group of motors is installed at the outer end of the conveying frame, and the output end of the motor is connected to one end of a group of rollers; the motor is started, so that the two groups of rollers drive the conveyor belts to rotate, and at the same time, the multiple groups of auxiliary rollers provide auxiliary support to the conveyor belt, and when the injection molded parts detach from the movable mold, they fall onto the conveyor belt, and the conveyor belt transports the injection molded parts.

[0010] Preferably, it also includes a No. 1 quick connector sub-head and a No. 2 quick connector sub-head, and cooling pipes are respectively arranged inside the fixed mold and the movable mold, and the input end of each group of cooling pipes is respectively provided with a No. 1 quick connector sub-head, and the output end of each group of cooling pipes is respectively provided with a No. 2 quick connector sub-head; when the movable mold and the fixed mold are closed, the input end of the cooling water is connected with the two groups of cooling pipes through the two groups of No. 1 quick connector sub-heads, and the two groups of cooling pipes are connected with the return water pipe through the two groups of No. 2 quick connector sub-heads, so as to improve the cooling efficiency.

[0011] Preferably, a reinforcing plate is provided at the inner bottom end of the support frame; the reinforcing plate improves the firmness of the support frame.

[0012] Preferably, a circular plate is further included, and the left end of the round rod is provided with the circular plate; the left end of the round rod contacts the inner left end of the support frame through the circular plate, thereby reducing the pressure on the inner left end of the support frame.

[0013] Compared with the prior art, the utility model has the following beneficial effects: the hydraulic cylinder is extended by operating the movable frame, so that the movable mold assembly and the fixed mold are molded together, and then the spiral extruder squeezes the molten liquid into the inner cavity of the fixed mold through the feed hole to process the injection molded parts, and then the hydraulic cylinder is shortened by operating the movable mold assembly, so that the movable mold assembly and the injection molded parts are separated from the fixed mold, and then the ejector assembly pushes the injection molded parts on the movable mold assembly away from the movable mold assembly, so as to realize automatic removal of the injection molded parts and improve convenience. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the axonometric structure of the utility model;

[0015] Figure 2 It is a schematic diagram of the explosion structure of the utility model;

[0016] Figure 3 It is an enlarged structural diagram of the hydraulic cylinder, movable plate and other structures;

[0017] Figure 4 It is an enlarged structural diagram of the fixed mold and the No. 1 quick connector sub-head;

[0018] Figure 5 It is an enlarged structural diagram of the conveyor belt and motor and other structures;

[0019] Figure 6 It is a front structural schematic diagram of the utility model.

[0020] Markings in the attached drawings: 1. support frame; 2. fixed mold; 3. hydraulic cylinder; 4. moving frame; 5. feed hole; 6. light bar; 7. moving mold; 8. ejector pin; 9. moving plate; 10. spring; 11. round rod; 12. roller; 13. auxiliary roller; 14. motor; 15. conveyor belt; 16. conveyor frame; 17. No. 1 quick connector sub-head; 18. No. 2 quick connector sub-head; 20. round plate. DETAILED DESCRIPTION

[0021] In order to facilitate the understanding of the utility model, the utility model will be described more comprehensively below with reference to the relevant drawings. The utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and comprehensive. Example 1

[0022] like Figure 1 , Figure 2 , Figure 4 and Figure 6 As shown, a mold clamping mechanism of an injection molding machine of the utility model comprises a support frame 1, a fixed mold 2, a hydraulic cylinder 3, a moving frame 4 and a feeding hole 5. The right end of the support frame 1 is provided with a fixed mold 2, and the fixed mold 2 is provided with a feeding hole 5. The left end of the support frame 1 is provided with two groups of hydraulic cylinders 3, and the moving ends of the two groups of hydraulic cylinders 3 are extended to the inside of the support frame 1 and are connected to the left end of the moving frame 4. It also comprises a moving mold assembly and an ejector assembly. The moving frame 4 is provided with a moving mold assembly, and the moving mold assembly is provided with an ejector assembly.

[0023] like Figure 2 , Figure 3 and Figure 6 As shown, the movable mold assembly includes a light bar 6 and a movable mold 7. A plurality of light bars 6 are provided at the right end of the movable frame 4. The movable mold 7 is mounted on the light bars 6. The plurality of light bars 6 are respectively slidably connected with the fixed mold 2 and the support frame 1. A ejection hole is provided on the movable mold 7, and an ejector pin assembly is provided in the ejection hole.

[0024] like Figure 2 , Figure 3 and Figure 6 As shown, the ejector assembly includes an ejector 8, a movable plate 9, a spring 10 and a round rod 11. A group of ejector pins 8 are slidably arranged in each group of ejector holes. The left ends of the multiple groups of ejector pins 8 are connected to the right end of the movable plate 9. Multiple groups of springs 10 are arranged between the movable plate 9 and the movable mold 7. A group of springs 10 are respectively sleeved on the outer side of each group of ejector pins 8. The left end of the movable plate 9 contacts the right end of the movable frame 4. The left end of the movable plate 9 is provided with a round rod 11. The left end of the round rod 11 passes through the movable frame 4 and extends to the left side of the movable frame 4.

[0025] like Figure 4 As shown, it also includes a No. 1 quick connector sub-head 17 and a No. 2 quick connector sub-head 18. Cooling pipes are respectively arranged inside the fixed mold 2 and the movable mold 7. The input end of each group of cooling pipes is respectively provided with a No. 1 quick connector sub-head 17, and the output end of each group of cooling pipes is respectively provided with a No. 2 quick connector sub-head 18.

[0026] In this embodiment, the input end of the cooling water is connected to the two groups of cooling pipes through two groups of No. 1 quick connector sub-heads 17, and the two groups of cooling pipes are connected to the return pipe through two groups of No. 2 quick connector sub-heads 18. The hydraulic cylinder 3 is extended, and the moving frame 4 drives the movable mold 7 to close the mold with the fixed mold 2 through multiple groups of light rods 6. Then, the spiral extruder squeezes the molten liquid into the inner cavity of the fixed mold 2 through the feed hole 5 to process the injection molded parts, driving the movable mold 7 away from the fixed mold 2, and multiple groups of ejectors 8 and The movable mold 7 moves synchronously. When the movable mold 7 continues to move to the left, the left end of the round rod 11 contacts the inner left end of the support frame 1, so that the movable plate 9 drives the multiple groups of ejectors 8 and the movable mold 7 to move toward each other, so that the ejectors 8 eject the injection molded parts inside the movable mold 7. When the movable mold 7 approaches the fixed mold 2, the multiple groups of springs 10 bring the movable plate 9 and the movable frame 4 close to each other, so that the right end of the ejector 8 is flush with the mold cavity of the movable mold 7 again, thereby realizing automatic stripping of the injection molded parts and improving convenience. Example 2

[0027] like Figure 1 , Figure 2 , Figure 4 and Figure 6 As shown, a mold clamping mechanism of an injection molding machine of the utility model comprises a support frame 1, a fixed mold 2, a hydraulic cylinder 3, a moving frame 4 and a feeding hole 5. The right end of the support frame 1 is provided with a fixed mold 2, and the fixed mold 2 is provided with a feeding hole 5. The left end of the support frame 1 is provided with two groups of hydraulic cylinders 3, and the moving ends of the two groups of hydraulic cylinders 3 are extended to the inside of the support frame 1 and are connected to the left end of the moving frame 4. It also comprises a moving mold assembly and an ejector assembly. The moving frame 4 is provided with a moving mold assembly, and the moving mold assembly is provided with an ejector assembly.

[0028] like Figure 2 , Figure 3 and Figure 6 As shown, the movable mold assembly includes a light bar 6 and a movable mold 7. A plurality of light bars 6 are provided at the right end of the movable frame 4. The movable mold 7 is mounted on the light bars 6. The plurality of light bars 6 are respectively slidably connected with the fixed mold 2 and the support frame 1. A ejection hole is provided on the movable mold 7, and an ejector pin assembly is provided in the ejection hole.

[0029] like Figure 2 , Figure 3 and Figure 6 As shown, the ejector assembly includes an ejector 8, a movable plate 9, a spring 10 and a round rod 11. A group of ejector pins 8 are slidably arranged in each group of ejector holes. The left ends of the multiple groups of ejector pins 8 are connected to the right end of the movable plate 9. Multiple groups of springs 10 are arranged between the movable plate 9 and the movable mold 7. A group of springs 10 are respectively sleeved on the outer side of each group of ejector pins 8. The left end of the movable plate 9 contacts the right end of the movable frame 4. The left end of the movable plate 9 is provided with a round rod 11. The left end of the round rod 11 passes through the movable frame 4 and extends to the left side of the movable frame 4.

[0030] like Figure 4 As shown, it also includes a No. 1 quick connector sub-head 17 and a No. 2 quick connector sub-head 18, and cooling pipes are respectively arranged inside the fixed mold 2 and the movable mold 7. The input end of each group of cooling pipes is respectively provided with a No. 1 quick connector sub-head 17, and the output end of each group of cooling pipes is respectively provided with a No. 2 quick connector sub-head 18;

[0031] like Figure 5 As shown, it also includes a conveying assembly, a conveying assembly is arranged inside the support frame 1, and the conveying assembly includes a roller 12, an auxiliary roller 13, a motor 14, a conveyor belt 15 and a conveying frame 16, the conveying frame 16 is installed inside the support frame 1, two groups of rollers 12 are rotatably arranged inside the conveying frame 16, a group of conveyor belts 15 are sleeved on the outer ends of the two groups of rollers 12, multiple groups of auxiliary rollers 13 are rotatably arranged inside the conveying frame 16, and the multiple groups of auxiliary rollers 13 are between the two groups of rollers 12, and a group of motors 14 are installed on the outer end of the conveying frame 16, and the output end of the motor 14 is connected to one end of a group of rollers 12;

[0032] like Figure 3 As shown, a circular plate 20 is also included. The circular plate 20 is disposed at the left end of the round rod 11.

[0033] In this embodiment, the input end of the cooling water is connected to the two groups of cooling pipes through two groups of No. 1 quick connector sub-heads 17, and the two groups of cooling pipes are connected to the return pipe through two groups of No. 2 quick connector sub-heads 18. The hydraulic cylinder 3 is extended, and the moving frame 4 drives the movable mold 7 to close the mold with the fixed mold 2 through multiple groups of light bars 6. Then, the spiral extruder squeezes the molten liquid into the inner cavity of the fixed mold 2 through the feed hole 5 to process the injection molded parts, driving the movable mold 7 away from the fixed mold 2. The multiple groups of ejectors 8 move synchronously with the movable mold 7. When the movable mold 7 continues to move to the left, the left end of the round rod 11 is aligned with the support frame 1. , so that the movable plate 9 drives the multiple groups of ejectors 8 and the movable mold 7 to move toward each other, so that the ejector 8 ejects the injection molded part inside the movable mold 7. When the movable mold 7 approaches the fixed mold 2, the multiple groups of springs 10 make the movable plate 9 and the movable frame 4 approach each other, so that the right end of the ejector 8 is flush with the mold cavity of the movable mold 7 again, and the motor 14 is started, so that the two groups of rollers 12 drive the conveyor belt 15 to rotate, and at the same time, the multiple groups of auxiliary rollers 13 provide auxiliary support to the conveyor belt 15. When the injection molded part detaches from the movable mold 7, it falls on the conveyor belt 15, and the conveyor belt 15 conveys the injection molded part.

[0034] The fixed mold 2, the movable mold 7, the hydraulic cylinder 3, the ejector 8, the spring 10, the motor 14, the No. 1 quick connector sub-head 17 and the No. 2 quick connector sub-head 18 of the mold clamping mechanism of an injection molding machine of the utility model are purchased on the market, and the technicians in the industry only need to install and operate them according to the accompanying instruction manual, without the need for the technicians in this field to make creative labor.

[0035] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A mold clamping mechanism for an injection molding machine, comprising a support frame (1), a fixed mold (2), a hydraulic cylinder (3), a movable frame (4) and a feed hole (5), wherein the fixed mold (2) is arranged at the right end inside the support frame (1), and the fixed mold (2) is provided with a feed hole (5), and two groups of hydraulic cylinders (3) are arranged at the left end of the support frame (1), and the movable ends of the two groups of hydraulic cylinders (3) both extend into the interior of the support frame (1) and are both connected to the left end of the movable frame (4), characterized in that: It also includes a movable mold assembly and an ejector assembly. The movable mold assembly is arranged on the movable frame (4), and the ejector assembly is arranged on the movable mold assembly. The movable mold assembly comprises a light bar (6) and a movable mold (7); a plurality of light bars (6) are arranged at the right end of the movable frame (4); the movable mold (7) is mounted on the light bars (6); the plurality of light bars (6) are slidably connected to the fixed mold (2) and the support frame (1) respectively; a material ejection hole is arranged on the movable mold (7); and a ejector pin assembly is arranged in the material ejection hole; The ejector assembly comprises an ejector (8), a movable plate (9), a spring (10) and a round rod (11); a group of ejector pins (8) are slidably arranged in each group of ejector holes; the left ends of the plurality of groups of ejector pins (8) are connected to the right end of the movable plate (9); a plurality of groups of springs (10) are arranged between the movable plate (9) and the movable mold (7); a group of springs (10) is respectively mounted on the outer side of each group of ejector pins (8); the left end of the movable plate (9) contacts the right end of the movable frame (4); a round rod (11) is arranged at the left end of the movable plate (9); the left end of the round rod (11) passes through the movable frame (4) and extends to the left side of the movable frame (4).

2. The mold clamping mechanism of an injection molding machine according to claim 1, characterized in that: The invention also comprises a conveying assembly, wherein the support frame (1) is provided with the conveying assembly inside, and the conveying assembly comprises a rotating roller (12), an auxiliary roller (13), a motor (14), a conveying belt (15) and a conveying frame (16), wherein the conveying frame (16) is installed inside the support frame (1), and two groups of rotating rollers (12) are rotatably arranged inside the conveying frame (16), and a group of conveying belts (15) are sleeved on the outer ends of the two groups of rotating rollers (12), and multiple groups of auxiliary rollers (13) are rotatably arranged inside the conveying frame (16), and the multiple groups of auxiliary rollers (13) are all between the two groups of rotating rollers (12), and a group of motors (14) are installed at the outer end of the conveying frame (16), and the output end of the motor (14) is connected to one end of a group of rotating rollers (12).

3. The mold clamping mechanism of an injection molding machine according to claim 1, characterized in that: It also includes a No. 1 quick connector sub-head (17) and a No. 2 quick connector sub-head (18). The fixed mold (2) and the movable mold (7) are respectively provided with cooling pipes inside. The input end of each group of cooling pipes is respectively provided with a No. 1 quick connector sub-head (17), and the output end of each group of cooling pipes is respectively provided with a No. 2 quick connector sub-head (18).

4. The mold clamping mechanism of an injection molding machine according to claim 1, characterized in that: A reinforcing plate is provided at the inner bottom end of the support frame (1).

5. The mold clamping mechanism of an injection molding machine according to claim 1, characterized in that: It also comprises a circular plate (20), and the circular plate (20) is arranged at the left end of the round rod (11).

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