Die opening and closing mechanism of forming equipment

Abstract

The utility model provides a mold opening and closing mechanism of forming equipment, and belongs to the technical field of forming equipment. The toggle rod mechanism solves the problems that a pin shaft and a connecting rod in an existing toggle rod mechanism frequently rotate and rub to cause serious abrasion and the like. The mold locking assembly further comprises a retaining plate arranged on the mold locking oil cylinder, retaining rods arranged on the mold closing oil cylinder and a driving part for driving the retaining plate to ascend and descend, receding holes corresponding to the positions of the retaining rods in a one-to-one mode are formed in the retaining plate, and the retaining rods penetrate through the receding holes and can horizontally move relative to the retaining plate. And after the mold closing oil cylinder pushes the movable mold plate to quickly close the mold, the retaining rod is pushed out of the retaining plate, the driving piece drives the retaining plate to ascend and descend, so that the position of the retaining rod is staggered from the position of the avoiding hole, and the mold locking oil cylinder continues to push the movable mold plate, so that the retaining rod is pressed and propped against the retaining plate to keep a retaining state. The utility model has the advantages that the retaining plate is propped against the retaining rod, so that the movable mold plate is prevented from retreating to be separated from the fixed mold plate when materials are injected into the mold at high pressure, and material overflow is prevented.

Description

Technical Field

[0001] The utility model belongs to the technical field of molding equipment and relates to a mold opening and closing mechanism of molding equipment. Background Art

[0002] Molding equipment includes die-casting machines and injection molding machines, which inject liquid metal or molten plastic into a mold under pressure and cool it to form it. After the mold is opened, solid metal castings or fixed plastic parts can be obtained.

[0003] The Chinese invention patent with the patent number CN87101068 discloses a toggle-type mold clamping device, which uses the mold transfer cylinder to quickly close the mold, and then the toggle mechanism generates the clamping force. However, the disadvantage of this type of mold clamping device is that the pin and the connecting rod in the toggle mechanism frequently rotate and rub, and the pin and the connecting rod are seriously worn, which affects the size of the clamping force. Utility Model Content

[0004] The utility model aims to solve the above problems existing in the existing mold clamping mechanism and proposes a mold clamping mechanism with stable mold locking.

[0005] The purpose of the utility model can be achieved through the following technical solutions:

[0006] A mold opening and closing mechanism of a molding device comprises a film frame, a movable platen, a fixed platen, and a mold closing oil cylinder, wherein the fixed platen is fixedly arranged on the film frame, and the movable platen is slidably arranged on the film frame, and the mold closing oil cylinder drives the movable platen to translate back and forth to realize mold opening and closing;

[0007] It is characterized in that the mold opening and closing mechanism further includes a mold locking assembly, and the mold locking assembly includes a mold locking cylinder. After the mold locking cylinder pushes the movable mold plate to quickly close the mold, the mold locking cylinder continues to push the movable mold plate to achieve high-pressure mold locking;

[0008] The mold locking assembly also includes a stop plate arranged on the mold locking cylinder, a stop rod arranged on the mold closing cylinder, and a driving member for driving the stop plate to rise and fall. The stop plate is provided with avoidance holes corresponding to the positions of the stop rods. The stop rod passes through the avoidance holes and can translate relative to the stop plate. When the mold closing cylinder pushes the moving mold plate to close the mold quickly, the stop rod is pushed out of the stop plate, and the driving member drives the stop plate to rise and fall so that the stop rod is staggered with the avoidance hole. The mold locking cylinder continues to push the moving mold plate so that the stop rod is pressed against the stop plate to maintain the stop state.

[0009] In the above-mentioned mold opening and closing mechanism of a molding device, the film frame includes a base plate, a front end plate and a rear end plate fixed on the base plate, the front end plate and the rear end plate are arranged in parallel and spaced apart along the sliding direction of the movable template, and a plurality of guide rods are fixedly connected between the front end plate and the rear end plate, the axis of the guide rods extends along the sliding direction of the movable template, and the movable template translates back and forth along each guide rod.

[0010] In the above-mentioned opening and closing mold mechanism of a molding equipment, the locking cylinder is fixedly connected to a locking plate, and the locking cylinder drives the locking plate to translate back and forth along the guide rods. The above-mentioned stop plate is vertically slidably arranged on the locking plate, and the driving member is fixed on the locking plate to drive the stop plate to rise and fall vertically.

[0011] In the above-mentioned mold opening and closing mechanism of a molding device, the cylinder body of the mold closing cylinder is fixedly connected to the rear end plate, and its piston rod is fixedly connected to the locking plate; the cylinder body of the locking cylinder is fixedly connected to the locking plate, and its piston rod is fixedly connected to the movable plate; the stop rod is fixedly arranged on the rear end plate.

[0012] In the above-mentioned mold opening and closing mechanism of a molding device, the piston rod of the mold locking cylinder is fixedly connected to a connecting plate, the connecting plate translates back and forth along the guide rods, and the connecting plate is fixedly connected to the movable mold plate by a plurality of connecting rods.

[0013] In the above-mentioned mold opening and closing mechanism of a molding device, the cylinder body of the mold locking cylinder is fixedly connected to the locking plate, and its piston rod is fixedly connected to the rear end plate; the cylinder body of the mold closing cylinder is fixedly connected to the movable plate, and its piston rod is fixedly connected to the locking plate; the stop rod is fixedly arranged on the movable plate.

[0014] In the above-mentioned mold opening and closing mechanism of a molding device, the cylinder diameter of the mold locking cylinder is larger than the cylinder diameter of the mold closing cylinder.

[0015] Compared with the prior art, after the mold is quickly closed by the mold closing cylinder, the utility model continues to push the movable mold plate to achieve high-pressure mold closing. At the same time, the stop plate and the stop rod are against each other to prevent the movable mold plate from retreating and separating from the fixed mold plate when the material is injected into the mold under high pressure, thereby preventing overflow and ensuring the quality of the product. The mold closing cylinder with a small cylinder diameter can move quickly and close with high closing efficiency. The mold closing cylinder with a large cylinder diameter has a large locking force and reliable locking, and has less parts wear than the elbow-type mold closing device. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0017] Figure 2 It is a sectional view of the overall structure of the utility model;

[0018] Figure 3 It is an enlarged structural schematic diagram of the backstop plate and the backstop rod of the utility model;

[0019] Figure 4 It is a schematic diagram of the overall structure of another implementation mode of the utility model;

[0020] Figure 5 It is a sectional view of the overall structure of another embodiment of the utility model.

[0021] In the figure, 1. mold closing cylinder; 2. mold locking cylinder; 3. movable mold plate; 4. fixed mold plate; 5. stop plate; 6. stop rod; 7. locking mold plate; 8. bottom plate; 9. front end plate; 10. rear end plate; 11. guide rod; 12. connecting plate; 13. connecting rod; 14. driving member; 15. avoidance hole. DETAILED DESCRIPTION

[0022] 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.

[0023] Example 1

[0024] like Figure 1 As shown, a mold opening and closing mechanism of a molding device described in the utility model includes a film frame, a movable template 3, a fixed template 4, and a mold closing cylinder 1. The fixed template 4 is fixed on the film frame, and the movable template 3 is slidably set on the film frame. The mold closing cylinder 1 drives the movable template 3 to translate back and forth to achieve mold opening and closing; the mold opening and closing mechanism also includes a clamping assembly, which includes a clamping cylinder 2. After the clamping cylinder 1 pushes the movable template 3 to quickly close the mold, the clamping cylinder 2 continues to push the movable template 3 to achieve high-pressure clamping; the cylinder diameter of the clamping cylinder 2 is larger than the cylinder diameter of the clamping cylinder 1.

[0025] like Figure 3 As shown, the mold locking assembly also includes a stop plate 5 arranged on the mold locking cylinder 2, a stop rod 6 arranged on the mold closing cylinder 1, and a driving member 14 for driving the stop plate 5 to rise and fall. The stop plate 5 is provided with avoidance holes 15 corresponding to the positions of the stop rods 6. The stop rods 6 pass through the avoidance holes 15 and can translate relative to the stop plate 5. When the mold closing cylinder 1 pushes the movable mold plate 3 to close the mold quickly, the stop rod 6 is pushed out of the stop plate 5, and the driving member 14 drives the stop plate 5 to rise and fall so that the stop rod 6 is staggered from the avoidance hole 15. The mold locking cylinder 2 continues to push the movable mold plate 3 so that the stop rod 6 is pressed against the stop plate 5 to maintain the stop state.

[0026] The film frame includes a bottom plate 8, a front end plate 9 and a rear end plate 10 fixed on the bottom plate 8, the front end plate 9 and the rear end plate 10 are arranged in parallel and spaced apart along the sliding direction of the movable plate 3, a plurality of guide rods 11 are fixedly connected between the front end plate 9 and the rear end plate 10, the axes of the guide rods 11 extend along the sliding direction of the movable plate 3, and the movable plate 3 translates back and forth along the guide rods 11. The clamping cylinder 2 is fixedly connected to a clamping plate 7, and the clamping cylinder 2 drives the clamping plate 7 to translate back and forth along the guide rods 11. The above-mentioned backstop plate 5 is vertically slidably arranged on the clamping plate 7, and the driving member 14 is fixedly arranged on the clamping plate 7 to drive the backstop plate 5 to rise and fall vertically.

[0027] like Figure 2As shown, the cylinder body of the mold clamping cylinder 1 is fixedly connected to the rear end plate 10, and its piston rod is fixedly connected to the locking plate 7; the cylinder body of the mold clamping cylinder 2 is fixedly connected to the locking plate 7, and its piston rod is fixedly connected to the movable plate 3; the stop rod 6 is fixedly arranged on the rear end plate 10. The piston rod of the mold clamping cylinder 2 is fixedly connected to a connecting plate 12, which translates back and forth along the guide rods 11, and the connecting plate 12 is fixedly connected to the movable plate 3 through a plurality of connecting rods 13.

[0028] The working steps of this embodiment are as follows: the piston rod of the mold clamping cylinder 1 extends and pushes the locking plate 7, the mold clamping cylinder 2 and the movable plate 3 to quickly translate and close the mold, such as Figure 2 As shown, at this time, the stop rod 6 extends out of the stop plate 5, the driving member 14 pushes the stop plate 5 down, the piston rod of the clamping cylinder 2 extends out, and its cylinder body pushes the locking plate 7 to translate in the direction away from the movable plate 3 and compresses the piston rod of the clamping cylinder 1 until the stop plate 5 and the stop rod 6 are butted against each other, and one end of the clamping cylinder 2 is pressed against the rear end plate 10 through the stop rod 6, and the other end is pressed against the movable plate 3 through the connecting rod 13 and the connecting plate 12 to achieve high-pressure clamping.

[0029] Example 2

[0030] like Figure 4 As shown, different from Example 1, the cylinder body of the locking cylinder 2 in this embodiment is fixedly connected to the locking plate 7, and its piston rod is fixedly connected to the rear end plate 10; the cylinder body of the mold closing cylinder 1 is fixedly connected to the movable plate 3, and its piston rod is fixedly connected to the locking plate 7; the stop rod 6 is fixedly arranged on the movable plate 3.

[0031] The working steps of this embodiment are as follows: the piston rod of the mold clamping cylinder 1 extends, and its cylinder body pushes the moving mold plate 3 to quickly translate and clamp the mold, such as Figure 5 As shown, at this time, the stop rod 6 extends out of the stop plate 5, the driving member 14 pushes the stop plate 5 down, the piston rod of the clamping cylinder 2 extends out, and its cylinder body pushes the locking plate 7 to translate toward the direction close to the movable plate 3 and compresses the piston rod of the clamping cylinder 1 until the stop plate 5 and the stop rod 6 are against each other, and the clamping cylinder 2 is pressed against the movable plate 3 through the stop rod 6 to realize high-pressure clamping.

[0032] It should be understood that in the claims and description of the utility model, all "including..." should be understood as an open-ended meaning, that is, its meaning is equivalent to "at least contains...", and should not be understood as a closed meaning, that is, its meaning should not be understood as "only includes...".

[0033] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A mold opening and closing mechanism of a molding device, comprising a film frame, a movable platen (3), a fixed platen (4), and a mold closing oil cylinder (1), wherein the fixed platen (4) is fixedly arranged on the film frame, the movable platen (3) is slidably arranged on the film frame, and the mold closing oil cylinder (1) drives the movable platen (3) to translate back and forth to realize mold opening and closing; It is characterized in that The mold opening and closing mechanism further comprises a mold locking assembly, which comprises a mold locking cylinder (2). After the mold locking cylinder (1) pushes the movable mold plate (3) to quickly close the mold, the mold locking cylinder (2) continues to push the movable mold plate (3) to achieve high-pressure mold locking. The mold locking assembly also includes a stop plate (5) arranged on the mold locking cylinder (2), a stop rod (6) arranged on the mold closing cylinder (1), and a driving member (14) for driving the stop plate (5) to rise and fall. The stop plate (5) is provided with avoidance holes (15) corresponding to the positions of the stop rods (6). The stop rods (6) pass through the avoidance holes (15) and can translate relative to the stop plate (5). When the mold closing cylinder (1) pushes the movable mold plate (3) to close the mold quickly, the stop rods (6) are pushed out of the stop plate (5), and the driving member (14) drives the stop plate (5) to rise and fall so that the stop rods (6) are offset from the avoidance holes (15). The mold locking cylinder (2) continues to push the movable mold plate (3) so that the stop rods (6) are pressed against the stop plate (5) to maintain the stop state.

2. The mold opening and closing mechanism of a molding device according to claim 1, characterized in that: The film frame comprises a bottom plate (8), a front end plate (9) and a rear end plate (10) fixed on the bottom plate (8); the front end plate (9) and the rear end plate (10) are arranged in parallel and spaced apart along the sliding direction of the movable template (3); a plurality of guide rods (11) are fixedly connected between the front end plate (9) and the rear end plate (10); the axes of the guide rods (11) extend along the sliding direction of the movable template (3); and the movable template (3) translates back and forth along the guide rods (11).

3. The mold opening and closing mechanism of a molding device according to claim 2, characterized in that: The locking cylinder (2) is fixedly connected to a locking plate (7), and the locking cylinder (2) drives the locking plate (7) to move back and forth along the guide rods (11). The stop plate (5) is vertically slidably arranged on the locking plate (7), and the driving member (14) is fixedly arranged on the locking plate (7) to drive the stop plate (5) to move vertically up and down.

4. The mold opening and closing mechanism of a molding device according to claim 2, characterized in that: The cylinder body of the mold clamping cylinder (1) is fixedly connected to the rear end plate (10), and its piston rod is fixedly connected to the locking plate (7); the cylinder body of the mold locking cylinder (2) is fixedly connected to the locking plate (7), and its piston rod is fixedly connected to the movable plate (3); the stop rod (6) is fixedly arranged on the rear end plate (10).

5. The mold opening and closing mechanism of a molding device according to claim 2, characterized in that: The piston rod of the clamping cylinder (2) is fixedly connected to a connecting plate (12). The connecting plate (12) moves back and forth along the guide rods (11). The connecting plate (12) is fixedly connected to the movable plate (3) via a plurality of connecting rods (13).

6. The mold opening and closing mechanism of a molding device according to claim 2, characterized in that: The cylinder body of the mold locking cylinder (2) is fixedly connected to the locking plate (7), and its piston rod is fixedly connected to the rear end plate (10); the cylinder body of the mold closing cylinder (1) is fixedly connected to the movable plate (3), and its piston rod is fixedly connected to the locking plate (7); the stop rod (6) is fixedly arranged on the movable plate (3).

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