Two-plate type mold closing mechanism

Abstract

The utility model relates to the technical field of injection molding machines, in particular to a two-plate type mold closing mechanism, which comprises a fixed plate, a guide rod arranged on the fixed plate, a fixed mold plate fixedly mounted at one end of the guide rod, a limiting plate arranged on one side of the fixed plate, an ejection oil cylinder arranged on one side of the fixed plate and fixedly connected with the guide rod, and a movable mold plate fixedly mounted at the other side of the ejection oil cylinder. A clamping plate is arranged at one end of the ejection oil cylinder, one end of the clamping plate is connected with a mold butt joint mechanism through a quick release assembly, a guide rod is fixedly installed on one side of the clamping plate, the mold butt joint mechanism is arranged on the guide rod in a sliding and sleeving mode, and an oil injection assembly is fixedly installed on the guide rod and used for lubricating and injecting oil into the guide rod inserted into an oil injection plate. According to the device, the mold butt joint mechanism and the clamping plate can be rapidly connected through the rapid disassembly assembly, then a worker can conveniently and rapidly disassemble a movable mold plate in the mold butt joint mechanism, and through the modular design, the flexibility of the device can be improved.

Description

Technical Field

[0001] This utility model relates to the field of injection molding machine technology, specifically a two-platen mold clamping mechanism. Background Technology

[0002] Compared to traditional three-platen injection molding machines, platen injection molding machines eliminate the tail plate in the mold clamping device, applying the clamping force directly to the two platens that fix the mold. This saves a significant amount of material and floor space, reducing the cost of the injection molding machine.

[0003] In a two-platen injection molding machine, the connection between the moving platen and the fixed platen is achieved by a mold docking mechanism that locks the two plates together. However, the moving platen in the existing mold docking mechanism is not convenient for operators to quickly replace. Furthermore, when the molded plastic product is ejected from the moving platen, a guide rod is installed in the mold docking mechanism to limit the ejection structure. Due to the large number of ejections, the guide rod is prone to wear, which in turn affects the service life of the ejection mechanism.

[0004] In view of this, this utility model is proposed. Utility Model Content

[0005] One of the technical problems to be solved by this application is to facilitate the rapid replacement of the moving template and its associated structure, while improving the service life of the device.

[0006] To solve the above-mentioned technical problems, this application provides a two-plate mold closing mechanism, including a fixed plate, a guide rod on the fixed plate, a fixed template fixedly installed at one end of the guide rod, a limit plate on one side of the fixed plate, the limit plate and the guide rod being fixedly connected to each other, an ejection cylinder on one side of the fixed plate, a snap-fit ​​plate at one end of the ejection cylinder, a mold docking mechanism connected to one end of the snap-fit ​​plate via a quick-release assembly, a guide rod fixedly installed on one side of the snap-fit ​​plate, the mold docking mechanism being slidably sleeved on the guide rod, the mold docking mechanism including an annular plate, an oil injection plate and a movable template, the annular plate being fitted against one side of the snap-fit ​​plate, the oil injection plate being fitted against one side of the annular plate, the movable template being sleeved on one end of the guide rod, an oil injection assembly fixedly installed on the guide rod, the oil injection assembly being used to lubricate the guide rod inserted into the oil injection plate.

[0007] In some embodiments, in order to fix and limit the ejection cylinder, the ejection cylinder is distributed on one side of the fixed plate, and the ejection cylinder and the fixed plate are fixedly connected to each other. The output end of the ejection cylinder passes through the limiting plate, and a top block is fixedly installed at the middle position of one side surface of the limiting plate.

[0008] In some embodiments, in order to provide spring force to the insertion rod through the snap-fit ​​spring, thereby allowing the insertion rod to be inserted into the slot, an annular groove is formed inside one side of the snap-fit ​​plate, one end of the annular plate is inserted into the annular groove, and a spring groove is formed on the outer circumference of one end of the annular plate. The quick-release assembly includes a snap-fit ​​spring, which is fixedly installed in the spring groove. An insertion rod is fixedly installed on one end of the snap-fit ​​spring. Slots are uniformly formed on the inner circumference of the annular groove, and the insertion rod is inserted into the slot.

[0009] In some embodiments, in order to enable the linkage rope to retract the insertion rod into the spring groove by rotating the rotating ring, the quick-release assembly further includes a rotating ring, which is rotatably engaged inside the annular plate. One end of the insertion rod is fixedly mounted with a linkage rope, and one end of the linkage rope passes through one end of the spring groove along the axial direction of the engaging spring and is fixedly connected to the rotating ring.

[0010] In some embodiments, in order to limit and fix the rotating ring by causing the positioning cone rod to slide and engage with the positioning groove through the rotation of the rotating ring, the inner ring of the rotating ring is provided with a positioning groove, the inner ring of the rotating ring is provided with a circumferentially distributed fixing groove, the fixing groove is fixedly installed with a fixing spring inside the fixing groove, one end of the fixing spring is fixedly installed with a positioning cone rod, one end of the positioning cone rod is slidably engaged with the positioning groove, and a rotating rod is fixedly installed on the annular plate.

[0011] In some embodiments, in order to enable the push rod to cooperate with the top block on the limiting plate, the oil injection plate is provided with a threaded groove, and the push rod is rotatably engaged in the threaded groove. The oil injection plate is provided with symmetrical guide holes, and one end of the guide rod is fixedly connected to the annular plate along the guide hole. The mold docking mechanism also includes a push rod, which is fixedly installed on one side surface of the oil injection plate. A return spring is sleeved on the push rod, one end of the return spring is fixedly connected to the oil injection plate, and the other end of the return spring is fixedly connected to the moving template. The free end of the push rod passes through the moving template.

[0012] In some embodiments, in order to achieve oil lubrication of the guide rod and recovery of lubricating oil through the oil tank, oil pipe, and oil return pipe, the oil injection assembly includes an oil injection hole and an oil return hole. One end of the oil injection hole is connected to the upper wall of the guide hole, and one end of the oil return hole is connected to the lower wall of the guide hole. The other end of the oil injection hole is connected to an oil injection pipe, and the other end of the oil return hole is connected to an oil return pipe. A support plate is fixedly installed on the guide rod, and an oil tank is fixedly installed on the support plate. The oil injection pipe and the oil return pipe are respectively connected to the oil tank.

[0013] In some embodiments, in order to limit the movement of the template, limit rods are symmetrically fixedly installed on the annular plate, with one end of the limit rod penetrating the fixed template.

[0014] This utility model has at least the following beneficial effects: the device can quickly connect the mold docking mechanism and the snap-fit ​​plate through the quick-release component, which makes it easy for the staff to quickly disassemble the moving template in the mold docking mechanism. Through the modular design, the flexibility of the device can be improved.

[0015] By using the oil injection components, real-time oil injection can be performed on the guide rods in the mold docking mechanism. This reduces the inertia of the moving mold plate during sliding as it moves toward the annular plate, thereby increasing the service life of the device. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a front view of the present invention;

[0018] Figure 3 This is a schematic diagram showing the positional relationship between the annular plate and the snap-fit ​​plate of this utility model;

[0019] Figure 4 This is a half-sectional view of the snap-fit ​​plate and the annular plate of this utility model;

[0020] Figure 5 This is a schematic diagram of the internal structure of the annular plate of this utility model;

[0021] Figure 6 This is a schematic diagram of the shape of the annular groove of this utility model.

[0022] Figure 7 This is a schematic diagram showing the distribution of the oil injection hole and the oil return hole of this utility model;

[0023] Figure 8 This is a schematic diagram showing the location of the threaded groove in this utility model;

[0024] Figure 9 for Figure 4 Enlarged view of the structure at point A in the middle;

[0025] Figure 10 for Figure 4 Enlarged view of the structure at point B;

[0026] Figure 11 for Figure 4 Enlarged view of the structure at point C;

[0027] Figure 12 for Figure 5 Enlarged view of the structure at point D.

[0028] In the diagram: 1. Fixing plate; 2. Guide rod; 3. Fixed template; 4. Limiting plate; 5. Ejection cylinder; 6. Snap-fit ​​plate; 7. Quick-release assembly; 701. Snap-fit ​​spring; 702. Insert rod; 703. Slot; 704. Rotating ring; 705. Linkage rope; 706. Positioning groove; 707. Fixing groove; 708. Fixing spring; 709. Positioning tapered rod; 710. Rotating rod; 8. Mold docking mechanism; 801. Oil injection plate; 8 02. Moving template; 803. Push rod; 804. Return spring; 805. Limiting rod; 806. Annular plate; 9. Guide rod; 10. Top block; 11. Annular groove; 12. Spring groove; 13. Threaded groove; 14. Top rod; 15. Guide hole; 16. Oil injection assembly; 1601. Oil injection hole; 1602. Oil return hole; 1603. Oil injection pipe; 1604. Oil return pipe; 1605. Support plate; 1606. Oil tank. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Example 1: Please refer to Figure 1-12This utility model provides a technical solution: a two-plate mold closing mechanism, including a fixed plate 1, a guide rod 2 on the fixed plate 1, a fixed template 3 fixedly installed at one end of the guide rod 2, a limit plate 4 on one side of the fixed plate 1, the limit plate 4 and the guide rod 2 being fixedly connected to each other, an ejection cylinder 5 on one side of the fixed plate 1, a snap-fit ​​plate 6 on one end of the ejection cylinder 5, a mold docking mechanism 8 connected to one end of the snap-fit ​​plate 6 via a quick-release assembly 7, a guide rod 9 fixedly installed on one side of the snap-fit ​​plate 6, the mold docking mechanism 8 being slidably sleeved on the guide rod 9, the mold docking mechanism 8 including an annular plate 806, an oil injection plate 801 and a moving template 802, the annular plate 806 being fitted to one side of the snap-fit ​​plate 6, the oil injection plate 801 being fitted to one side of the annular plate 806, the moving template 802 being sleeved on one end of the guide rod 9, an oil injection assembly 16 fixedly installed on the guide rod 2, the oil injection assembly 16 being used to lubricate the guide rod 9 inserted in the oil injection plate 801.

[0031] Example 2: As Figure 1 As shown, the ejector cylinders 5 are distributed on one side of the fixed plate 1, and the ejector cylinders 5 and the fixed plate 1 are fixedly connected to each other. The output end of the ejector cylinder 5 passes through the limiting plate 4. A top block 10 is fixedly installed in the middle of one side surface of the limiting plate 4. An annular groove 11 is opened inside one side of the snap-fit ​​plate 6. One end of the annular plate 806 is inserted into the annular groove 11 so that the annular structure at one end of the snap-fit ​​plate 6 can accurately insert one end of the annular plate 806 into the annular groove 11.

[0032] like Figure 3 and Figure 5 As shown, a spring groove 12 is circumferentially formed on the outer wall of one end of the annular plate 806. The quick-release assembly 7 includes a snap-fit ​​spring 701, which is fixedly installed in the spring groove 12. A rod 702 is fixedly installed on one end of the snap-fit ​​spring 701. Slots 703 are evenly formed on the inner wall of the annular groove 11. The rod 702 is inserted into the slot 703. The quick-release assembly 7 also includes a rotating ring 704, which is rotatably snapped into the annular plate 806. A linkage rope 705 is fixedly installed on one end of the rod 702. One end of the linkage rope 705 is attached to the snap-fit ​​spring. The spring 701 passes through one end of the spring groove 12 along its axial direction and is fixedly connected to the rotating ring 704. Through the linkage rope 705, the snap-fit ​​spring 701 and the insert rod 702 provided on the rotating ring 704, the insert rod 702 can be retracted into the spring groove 12 when the rotating ring 704 is rotated. Then, the annular plate 806 is inserted into the annular groove 11, and the rotating ring 704 is reversed. At this time, under the elastic force of the snap-fit ​​spring 701, the insert rod 702 is pushed into the slot 703 in the snap-fit ​​plate 6, thereby achieving the effect of fixing the annular plate 806.

[0033] Example 4: Figure 5As shown, the inner ring of the rotating ring 704 has a positioning groove 706 circumferentially formed, and the annular plate 806 has symmetrically distributed fixing grooves 707 inside. A fixing spring 708 is fixedly installed inside the fixing groove 707, and a positioning conical rod 709 is fixedly installed at one end of the fixing spring 708. One end of the positioning conical rod 709 is slidably engaged with the positioning groove 706. A rotating rod 710 is fixedly installed on the annular plate 806. Through the fixing spring 708 and the positioning conical rod 709 on the rotating ring 704, the positioning conical rod 709 can be slidably engaged with the positioning groove 706 after the rotating ring 704 rotates, thereby limiting the rotation of the rotating ring 704. As a result, when the rotating ring 704 rotates and the linkage rope 705 is wrapped around the rotating ring 704, the insertion rod 702 disengages from the slot 703, thereby releasing the connection between the annular groove 11 and the annular plate 806.

[0034] Example 4: Figure 4 As shown, the oil injection plate 801 has a threaded groove 13, and a push rod 14 is rotatably engaged in the threaded groove 13. Guide holes 15 are symmetrically provided on the oil injection plate 801. One end of the guide rod 9 is fixedly connected to the annular plate 806 along the guide hole 15. The mold docking mechanism 8 also includes a push rod 803, which is fixedly installed on one side surface of the oil injection plate 801. A return spring 804 is sleeved on the push rod 803. One end of the return spring 804 is fixedly connected to the oil injection plate 801, and the other end is fixedly connected to the moving template 802. The free end of the push rod 803 passes through the moving template 802. It should be noted that limit rods 805 are symmetrically fixedly installed on the annular plate 806. One end of the limit rod 805 passes through the fixed template 3. The working principle of the docking mechanism 8 is that the ejector cylinder 5 pushes the snap-fit ​​plate 6 to move. At this time, the mold docking mechanism 8 begins to move towards the fixed template 3. When the moving template 802 in the mold docking mechanism 8 docks with the fixed template 3, the injection molding machine injects plastic into the moving template 802 and the fixed template 3. Then, by controlling the ejector cylinder 5 to retract, the mold docking mechanism 8 can move towards the limiting plate 4. When the ejector rod 14 on the annular plate 806 in the mold docking mechanism 8 abuts against the ejector block 10 on the limiting plate 4, the oil injection plate 801 begins to move towards the fixed template 3, which causes the push rod 803 to push the molded plastic on the moving template 802 to detach from the moving template 802. The elastic force of the return spring 804 can make the oil injection plate 801 return to its original position.

[0035] Example 4: Figure 7As shown, the oil injection assembly 16 includes an oil injection hole 1601 and an oil return hole 1602. One end of the oil injection hole 1601 is connected to the upper wall of the guide hole 15, and one end of the oil return hole 1602 is connected to the lower wall of the guide hole 15. The other end of the oil injection hole 1601 is connected to an oil injection pipe 1603, and the other end of the oil return hole 1602 is connected to an oil return pipe 1604. A support plate 1605 is fixedly installed on the guide rod 2, and an oil injection tank 1606 is fixedly installed on the support plate 1605. The oil injection pipe 1603 and the oil return pipe 1604 are respectively connected to the oil injection tank 1606 to facilitate the oil injection plate 801 in... When the guide rod 9 slides, the oil pump in the oil tank 1606 injects the lubricating oil into the oil injection hole 1601 above the guide hole 15 through the oil injection pipe 1603, thereby achieving real-time lubrication of the guide rod 9. The lubricating oil dripping into the return oil hole 1602 can enter the oil tank 1606 along the return oil pipe 1604. The oil pump outlet is connected to the oil injection pipe 1603, and the oil pump inlet is connected to the oil tank 1606, thereby achieving cyclic oil injection of the guide rod 2.

[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A two-plate mold clamping mechanism, comprising a fixed plate (1), a guide rod (2) provided on the fixed plate (1), a fixed template (3) fixedly installed at one end of the guide rod (2), a limit plate (4) provided on one side of the fixed plate (1), the limit plate (4) and the guide rod (2) being fixedly connected to each other, an ejector cylinder (5) provided on one side of the fixed plate (1), and a snap-fit ​​plate (6) provided at one end of the ejector cylinder (5), characterized in that: One end of the snap-fit ​​plate (6) is connected to a mold docking mechanism (8) via a quick-release assembly (7). A guide rod (9) is fixedly installed on one side of the snap-fit ​​plate (6). The mold docking mechanism (8) is slidably sleeved on the guide rod (9). The mold docking mechanism (8) includes an annular plate (806), an oil injection plate (801), and a moving template (802). The annular plate (806) is fitted to one side of the snap-fit ​​plate (6). The oil injection plate (801) is fitted to one side of the annular plate (806). The moving template (802) is sleeved on one end of the guide rod (9). An oil injection assembly (16) is fixedly installed on the guide rod (2). The oil injection assembly (16) is used to lubricate the guide rod (9) inserted into the oil injection plate (801).

2. The two-plate mold clamping mechanism according to claim 1, characterized in that: The ejector cylinders (5) are distributed on one side of the fixed plate (1), and the ejector cylinders (5) and the fixed plate (1) are fixedly connected to each other. The output end of the ejector cylinders (5) passes through the limiting plate (4), and a top block (10) is fixedly installed at the middle position of one side surface of the limiting plate (4).

3. The two-plate mold clamping mechanism according to claim 2, characterized in that: The snap-fit ​​plate (6) has an annular groove (11) inside one side. One end of the annular plate (806) is inserted into the annular groove (11). The outer circumference of one end of the annular plate (806) has a spring groove (12) in the circumference. The quick-release assembly (7) includes a snap-fit ​​spring (701). The snap-fit ​​spring (701) is fixedly installed in the spring groove (12). One end of the snap-fit ​​spring (701) is fixedly installed with a plug rod (702). The inner circumference of the annular groove (11) has slots (703) evenly opened. The plug rod (702) is inserted into the slot (703).

4. The two-plate mold clamping mechanism according to claim 3, characterized in that: The quick-release assembly (7) also includes a rotating ring (704), which is rotatably engaged inside the annular plate (806). One end of the insert rod (702) is fixedly installed with a linkage rope (705), and one end of the linkage rope (705) passes through one end of the spring groove (12) along the axial direction of the snap-fit ​​spring (701) and is fixedly connected to the rotating ring (704).

5. The two-plate mold clamping mechanism according to claim 4, characterized in that: The inner ring of the rotating ring (704) has a positioning groove (706) circumferentially formed. The annular plate (806) has symmetrically distributed fixing grooves (707) inside. A fixing spring (708) is fixedly installed inside the fixing groove (707). A positioning conical rod (709) is fixedly installed at one end of the fixing spring (708). One end of the positioning conical rod (709) is slidably engaged with the positioning groove (706). A rotating rod (710) is fixedly installed on the annular plate (806).

6. The two-plate mold clamping mechanism according to claim 1, characterized in that: The oil injection plate (801) is provided with a threaded groove (13), and a push rod (14) is rotatably engaged in the threaded groove (13). The oil injection plate (801) is provided with symmetrical guide holes (15). One end of the guide rod (9) is fixedly connected to the annular plate (806) along the guide hole (15). The mold docking mechanism (8) also includes a push rod (803). The push rod (803) is fixedly installed on one side surface of the oil injection plate (801). A return spring (804) is sleeved on the push rod (803). One end of the return spring (804) is fixedly connected to the oil injection plate (801), and the other end of the return spring (804) is fixedly connected to the moving template (802). The free end of the push rod (803) passes through the moving template (802).

7. The two-plate mold clamping mechanism according to claim 6, characterized in that: The oil injection assembly (16) includes an oil injection hole (1601) and an oil return hole (1602). One end of the oil injection hole (1601) is connected to the upper wall of the guide hole (15), and one end of the oil return hole (1602) is connected to the lower wall of the guide hole (15). The other end of the oil injection hole (1601) is connected to an oil injection pipe (1603), and the other end of the oil return hole (1602) is connected to an oil return pipe (1604). A support plate (1605) is fixedly installed on the guide rod (2), and an oil injection tank (1606) is fixedly installed on the support plate (1605). The oil injection pipe (1603) and the oil return pipe (1604) are respectively connected to the oil injection tank (1606).

8. The two-plate mold clamping mechanism according to claim 1, characterized in that: Limiting rods (805) are symmetrically fixedly installed on the annular plate (806), and one end of the limiting rod (805) passes through the fixed template (3).

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