Mould closing ejector rod delay mechanism device

Abstract

The utility model provides a mold closing ejector rod delay mechanism device. The mold closing ejector rod delay mechanism device comprises a base, a protective shell is installed above the base, an upper mold is fixedly installed below the protective shell, a lower mold is installed in the middle of the upper end of the base, and a connecting frame is installed in the middle of the interior of the base in a sliding mode. According to the mold closing ejector rod delay mechanism device, the base, the motor, the screw rod and the connecting frame are arranged, the motor drives the screw rod to start to rotate, the connecting frame is stabilized by the base and cannot rotate in situ, meanwhile, through threaded connection between a screw hole and the screw rod, the connecting frame can move up and down according to the rotating direction of the motor; meanwhile, the sliding arms on the two sides of the connecting frame are clamped in the sliding grooves, so that the sliding arms can move up and down in the sliding grooves, when the connecting frame moves upwards, the bottom plate above applies upward force to the workpiece, the workpiece is separated from the lower mold, the workpiece demolding effect is achieved, meanwhile, the connecting frame is supported by the sliding arms, and the connecting frame is more stable during mold stripping; and the workpiece is prevented from being damaged.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, and more specifically, to a mold clamping ejector rod delay mechanism device. Background Technique

[0002] A mold is a tool that makes a blank into a workpiece with a specific shape and size under an external force. It is widely used in blanking, cold heading, extrusion, part pressing, and the forming processes of compression molding or injection molding of rubber, ceramics and other products. The mold has a specific contour or inner cavity shape. Applying a contour shape with a cutting edge can cause the blank to separate along the contour line. Among them, when the mold workpiece AQ34-HS5624 is formed and the upper die of the part is opened, it is necessary to ensure that the blank holder of the lower die is lifted later, otherwise the part will be deformed by the ejection. Therefore, a delay mechanism is required. However, when the existing delay mechanism is in use, when two models are simultaneously injection molded in the mold and the ejector rods are used to demold the two models at the same time, the two models are prone to collide and cause damage to the models.

[0003] In view of the above problems, regarding the technical problem that the two models are prone to collide and cause damage to the models, after a large number of searches, a mold clamping ejector rod delay mechanism device with a patent number of 202321965939.2 was found, which belongs to the technical field of molds and includes a lower mold, and a push plate is fixedly connected to the top end of the fixed rod; in this utility model, by setting the first telescopic member, the top plate, the connecting frame, the positioning pin, the fixed rod, the clamping block, the push plate, and the nut, after the raw material is formed in the lower mold, the top plate first ejects the first workpiece in the lower mold, and the push plate ejects the second workpiece in the lower mold, thereby ensuring the delayed demolding of the two workpieces. The intermittent movement of the push plate and the top plate demolds the two models to prevent the models from being damaged. However, the technical solution provided by this patent has the following problems:

[0004] (1) When using the nut to adjust the ejection time of the fixed rod, both nuts need to be manually adjusted separately by workers. When adjusting the position of the nuts, it is impossible to ensure that the heights of the nuts are the same. When the positions of the nuts are inconsistent during demolding, the extension heights of the fixed rods are different, and the workpiece is prone to tilt during workpiece demolding, resulting in friction between one side of the workpiece and the mold, causing damage to the workpiece;

[0005] (2) When the second telescopic member moves upward to drive the strip plate upward and lift the cover plate, the connection point between the strip plate and the cover plate is too single, and the force received by the cover plate is uneven. During the lifting process, the height of the cover plate is prone to be inconsistent, resulting in the upper mold being easily stuck during demolding, affecting the demolding efficiency.

[0006] The utility model can ensure that when the workpiece is demolded, the extended height and the stop height of the fixed rod are in the same position, making the demolding of the workpiece more stable, avoiding friction between the workpiece and the mold, resulting in damage, and ensuring that the force received by the upper mold during demolding is more uniform, so that the upper mold will not be stuck and affect the demolding efficiency. Summary of the Utility Model

[0007] The purpose of the utility model is to solve the technical problems proposed in the above background technology and provide a die clamping ejector rod delay mechanism device for a mold.

[0008] To achieve the above purpose, the utility model provides the following technical solutions: A die clamping ejector rod delay mechanism device, including the base. Above the base, a protective shell is installed. Below the protective shell, an upper mold is fixedly installed. In the middle of the upper end of the base, a lower mold is installed. In the middle of the interior of the base, a connecting frame is slidably installed. In the middle of the upper end of the base, a first ejector rod groove is opened. On both sides of the first ejector rod groove, second ejector rod grooves are opened.

[0009] Further preferred solution: At the bottom inside the base, a motor is fixedly installed. In the middle of the interior of the motor, a screw rod is provided. In the middle of both the left and right ends inside the base, sliding grooves are opened.

[0010] Further preferred solution: At the bottom of the protective shell, a first electric telescopic rod is provided. Around the first electric telescopic rod, sleeve rods are arranged. The output ends of the first electric telescopic rod and the sleeve rods are both connected to the upper end of the upper mold.

[0011] Further preferred solution: In the middle of the upper end of the upper mold, a first backing plate is fixedly installed. The first backing plate is fixedly connected to the output end of the first electric telescopic rod. At the four corners of the upper end of the upper mold, second backing plates are provided. The upper ends of the second backing plates are fixedly connected to the output ends of the sleeve rods.

[0012] Further preferred solution: Inside the lower mold, a bottom plate is movably installed. The size of the bottom plate is the same as the interior of the lower mold. On both the left and right sides of the bottom of the lower mold, strip-shaped grooves are opened. In the middle of the bottom of the lower mold, a round hole groove is opened. The strip-shaped grooves are opened above the second ejector rod grooves, and the round hole groove is opened above the first ejector rod groove.

[0013] Further preferred solution: In the middle of the upper end of the connecting frame, a threaded hole is opened. On one side of the threaded hole, a second electric telescopic rod is fixedly installed. On both the left and right sides of the second electric telescopic rod, fixed rods are provided. The upper ends of the fixed rods are both fixedly installed with push plates. The push plates and the output ends of the second electric telescopic rod are both connected to the bottom of the bottom plate inside the lower mold. In the middle of both the left and right ends of the connecting frame, sliding arms are provided. The sliding arms are matched with the sliding grooves opened inside the base.

[0014] Further preferred solution: The push plate is arranged in cooperation with the second push rod groove. The push plate passes through the second push rod groove and is connected to the bottom plate. The output end of the second electric telescopic rod is arranged in cooperation with the first push rod groove. The second electric telescopic rod passes through the first push rod groove and is connected to the bottom plate.

[0015] Beneficial effects:

[0016] 1. By providing a base, a motor, a screw rod and a connecting frame, when the motor starts to operate, the screw rod starts to rotate. The connecting frame is stabilized by the base and will not rotate in place. At the same time, through the threaded connection between the screw hole and the screw rod, the connecting frame will move up and down according to the rotation direction of the motor, so that the sliding arm can move up and down in the chute. When the connecting frame moves upward, the upper push plate and the bottom plate apply an upward force to the workpiece, so that the workpiece is ejected from the lower mold, achieving the function of workpiece demoulding.

[0017] 2. By providing a first electric telescopic rod and a sleeve rod, when the first electric telescopic rod applies an upward force to the first backing plate and drives the upper mold to move upward, the sleeve rod receives the same upward traction force. Since the bottom of the sleeve rod is connected to the second backing plate, the sleeve rod will apply an upward force to the second backing plate when moving upward, so that the upper end of the upper mold receives the upward traction forces applied by both the first electric telescopic rod and the sleeve rod at the same time, making the force on the upper mold more uniform during demoulding, avoiding the inclination of the upper mold during the mold ejection process due to uneven force, resulting in the upper mold getting stuck on the workpiece or the lower mold, and improving the efficiency of mold ejection.

[0018] 3. By providing a connecting frame, a sliding arm and a screw rod, when the driving of the motor is stopped, because of the threaded connection between the screw rod and the screw hole, the connecting frame will not slide down due to the influence of the threaded connection, but will stop at the current position to support the workpiece. At the same time, the sliding arms on both sides of the connecting frame are stuck inside the chute, and the phenomenon of the connecting frame tilting to one side will not occur, thus achieving the function of stable delayed mold ejection.

[0019] 4. In summary, for this mold clamping ejector delay mechanism device, by setting structures such as a motor, a screw, a connecting frame, and a sliding arm, when the driving motor rotates the screw, the threaded connection between the screw and the threaded hole ensures that the connecting frame does not rotate in place when fixed to the base. Instead, it moves within the chute through the sliding arm. When the connecting frame continues to move upward, the push plate and the second electric telescopic rod pass through the strip-shaped groove and the round hole groove to connect with the bottom plate, thereby enabling the bottom plate to lift the workpiece inside the lower mold out of the mold. When the driving of the motor stops, due to the threaded connection between the screw and the threaded hole, the connecting frame is not affected by the threaded connection and does not slide down, but stops at the current position to support the workpiece. At the same time, the sliding arms on both sides of the connecting frame are stuck inside the chute, preventing the connecting frame from tilting to one side, making the connecting frame more stable and more stable during the second driving of the motor for mold ejection, not prone to tilting, achieving the effect of delayed mold ejection. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic diagram of the overall structure of the present invention.

[0021] Figure 2 is a schematic diagram of the mold parting structure of the present invention.

[0022] Figure 3 is a schematic diagram of the internal structure of the base of the present invention.

[0023] Figure 4 is a schematic diagram of the upper and lower mold parting structure of the present invention.

[0024] Figures 1-4 In the figure: 1. Base; 101. Motor; 102. Screw; 103. Chute; 104. Push rod groove one; 105. Push rod groove two; 2. Protective shell; 201. First electric telescopic rod; 202. Sleeve rod; 3. Upper mold; 301. First backing plate; 302. Second backing plate; 4. Lower mold; 401. Bottom plate; 402. Strip-shaped groove; 403. Round hole groove; 5. Connecting frame; 501. Threaded hole; 502. Second electric telescopic rod; 503. Fixed rod; 504. Push plate; 505. Sliding arm. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] The following will combine the attached drawings in the embodiments of the present invention Figures 1-4 to clearly and completely describe the technical solutions in the embodiments of the present invention.

[0026] Please refer to Figures 1-4, in the embodiment of the present utility model, a die clamping ejector rod delay mechanism device includes: a base 1, a protective shell 2 is installed above the base 1, an upper die 3 is fixedly installed below the protective shell 2, a lower die 4 is installed in the middle of the upper end of the base 1, a connecting frame 5 is slidably installed in the middle of the interior of the base 1, a first ejector rod groove 104 is opened in the middle of the upper end of the base 1, second ejector rod grooves 105 are opened on both the left and right sides of the first ejector rod groove 104, a motor 101 is fixedly installed at the bottom of the interior of the base 1, a screw rod 102 is arranged in the middle of the interior of the motor 101, sliding grooves 103 are opened in the middle of both the left and right ends of the interior of the base 1, a screw hole 501 is opened in the middle of the upper end of the connecting frame 5, sliding arms 505 are arranged in the middle of both the left and right ends of the connecting frame 5, and the sliding arms 505 are arranged in a matching manner with the sliding grooves 103 opened in the interior of the base 1. When ejecting the workpiece AQ34-HS5624, by driving the motor 101 inside the base 1, the motor 101 will cause the screw rod 102 to start rotating. The screw rod 102 is arranged in a matching manner with the screw hole 501 in the middle of the connecting frame 5. At the same time, the sliding arms 505 arranged at both ends of the connecting frame 5 are arranged in a matching manner with the sliding grooves 103. Therefore, when the screw rod 102 rotates, the screw hole 501 is in threaded connection with the screw rod 102. The connecting frame 5 is fixed by the base 1. Therefore, the connecting frame 5 will not rotate in place, but move up and down through the sliding grooves 103, and move up and down according to the direction driven by the motor 101, so as to jack up the workpiece AQ34-HS5624 in the lower die 4 for ejection.

[0027] In the embodiment of the present utility model, a first electric telescopic rod 201 is arranged at the bottom of the protective shell 2. A sleeve rod 202 is arranged around the first electric telescopic rod 201. The output ends of the first electric telescopic rod 201 and the sleeve rod 202 are both connected to the upper end of the upper mold 3. A first cushion plate 301 is fixedly installed in the middle of the upper end of the upper mold 3. The first cushion plate 301 is fixedly connected to the output end of the first electric telescopic rod 201. Second cushion plates 302 are arranged at the four corners of the upper end of the upper mold 3. The upper ends of the second cushion plates 302 are fixedly connected to the output ends of the sleeve rods 202. When demolding a workpiece, it is necessary to separate the upper mold 3 and the lower mold 4. When separating the upper mold 3, first drive the first electric telescopic rod 201. The first electric telescopic rod 201 applies an upward force to the first cushion plate 301, driving the upper mold 3 to move upward. At the same time, the sleeve rod 202 is subjected to an upward traction force. And because the inside of the sleeve rod 202 is arranged as a hollow structure, the output end of the sleeve rod 202 can move up and down unobstructed inside the sleeve rod 202. Therefore, when subjected to the upward traction force of the first electric telescopic rod 201, the second cushion plates 302 at the four corners of the upper end of the upper mold 3 are simultaneously pulled by the sleeve rod 202 and move as the first electric telescopic rod 201 continues to move upward, so that the middle and the periphery of the upper mold 3 are simultaneously pulled upward by the same force, avoiding the inclination of the upper mold 3 during the demolding process due to uneven force, resulting in the upper mold 3 getting stuck on the workpiece or the lower mold 4, improving the demolding efficiency of the mold, and at the same time avoiding the frictional damage of the workpiece AQ34-HS5624 caused by the inclination of the upper mold 3.

[0028] In the embodiment of the present utility model, a bottom plate 401 is movably installed inside the lower mold 4. The size of the bottom plate 401 is the same as that inside the lower mold 4. Bar-shaped grooves 402 are opened on both the left and right sides of the bottom of the lower mold 4, and a circular hole groove 403 is opened in the middle of the bottom of the lower mold 4. The bar-shaped grooves 402 are opened above the second push rod groove 105, and the circular hole groove 403 is opened above the first push rod groove 104. One side of the screw hole 501 is fixedly installed with a second electric telescopic rod 502. Fixed rods 503 are arranged on both the left and right sides of the second electric telescopic rod 502. The upper ends of the fixed rods 503 are fixedly installed with push plates 504. The push plates 504 and the output ends of the second electric telescopic rods 502 are both connected to the bottom of the bottom plate 401 inside the lower mold 4. The push plates 504 are arranged in a matching manner with the second push rod grooves 105. The push plates 504 penetrate through the second push rod grooves 105 and are connected to the bottom plate 401. The output ends of the second electric telescopic rods 502 are arranged in a matching manner with the first push rod grooves 104. The second electric telescopic rods 502 penetrate through the first push rod grooves 104 and are connected to the bottom plate 401. When demolding the workpiece AQ34-HS5624 from the lower mold 4, the motor 101 provides the power to move the connecting frame 5 upward to lift the workpiece. When the connecting frame 5 moves upward, the fixed rods 503 move upward simultaneously. The push plates 504 at the tops of the fixed rods 503 and the second electric telescopic rods 502 extend out from the second push rod grooves 105 and the first push rod grooves 104, and continuously pass through the bar-shaped grooves 402 and the circular hole grooves 403 to be connected to the bottom plate 401. With the continuous output of the motor 101, the connecting frame 5 continues to move upward, so that the push plates 504 and the second electric telescopic rods 502 lift the bottom plate 401 upward. The bottom plate 401 will lift the workpiece AQ34-HS5624 above it upward for demolding. At the same time, because the connecting frame 5 is an integral body and is supported by the sliding arms 505 on both sides, when it moves upward under the output of the motor 101, it will not tilt upward on one side. This makes the fixed rods 503 more stable and steady when supporting and lifting the bottom plate 401, making the demolding of the workpiece AQ34-HS5624 smoother and more stable, and avoiding the phenomenon that one side of the workpiece AQ34-HS5624 collides and rubs against the lower mold 4, resulting in damage and loss of the workpiece. When the driving of the motor 101 is stopped, because the screw 102 and the screw hole 501 are in threaded connection, the connecting frame 5 will not slide down due to the influence of the threaded connection, but will stop at the current position to support the workpiece, achieving the function of delayed demolding.

[0029] Working principle: When demolding, the driving motor 101 rotates the screw 102. The threaded connection between the screw 102 and the threaded hole 501 prevents the connecting frame 5 from rotating in place when fixed to the base 1. Instead, the connecting frame 5 moves up and down in the chute 103 through the sliding arm 505. When the connecting frame 5 moves upward, the push plate 504 at the top of the fixing rod 503 and the second electric telescopic rod 502 will extend from the second push rod groove 105 and the first push rod groove 104, continuously pass upward through the strip groove 402 and the round hole groove 403 and connect to the bottom plate 401. The bottom plate 401 jacks up the workpiece inside the lower mold 4 for demolding. When the driving of the motor 101 stops, due to the threaded connection between the screw 102 and the threaded hole 501, the connecting frame 5 will not slide down under the influence of the threaded connection. Instead, it stops at the current position to support the workpiece, achieving the function of delayed demolding.

Claims

1. A mold clamping ejector delay mechanism device, comprising: A base (1), a protective shell (2) is installed above the base (1), an upper mold (3) is fixedly installed below the protective shell (2), and a lower mold (4) is installed in the middle of the upper end of the base (1), characterized in that a connecting frame (5) is slidably installed in the middle of the base (1), a push rod groove 1 (104) is opened in the middle of the upper end of the base (1), and push rod grooves 2 (105) are opened on both sides of the push rod groove 1 (104).

2. A mold clamping ejector delay mechanism device according to claim 1, characterized in that: An electric motor (101) is fixedly mounted at the bottom of the base (1), a screw rod (102) is arranged in the middle of the electric motor (101), and sliding grooves (103) are arranged in the middle of both left and right ends of the base (1).

3. A mold clamping ejector delay mechanism device according to claim 1, characterized in that: A first electric telescopic rod (201) is arranged at the bottom of the protective shell (2), a sleeve rod (202) is arranged around the first electric telescopic rod (201), and the output ends of the first electric telescopic rod (201) and the sleeve rod (202) are both connected to the upper end of the upper mold (3).

4. A mold clamping ejector time delay mechanism device according to claim 3, characterized in that: A backing plate 1 (301) is fixedly installed in the middle of the upper end of the upper mold (3), and the backing plate 1 (301) is fixedly connected to the output end of the first electric telescopic rod (201). Backing plates 2 (302) are arranged at the four corners of the upper end of the upper mold (3), and the upper ends of the backing plates 2 (302) are fixedly connected to the output end of the sleeve rod (202).

5. The mold clamping ejector time delay mechanism device according to claim 1, characterized in that: A bottom plate (401) is movably installed inside the lower mold (4), and the size of the bottom plate (401) is consistent with that of the inside of the lower mold (4). The left and right sides of the bottom of the lower mold (4) are provided with strip grooves (402), and the middle of the bottom of the lower mold (4) is provided with a circular hole groove (403). The strip groove (402) is provided above the second push rod groove (105), and the circular hole groove (403) is provided above the first push rod groove (104).

6. The mold clamping ejector delay mechanism device according to claim 1, characterized in that: A screw hole (501) is provided in the middle of the upper end of the connecting frame (5), a second electric telescopic rod (502) is fixedly installed on one side of the screw hole (501), a fixing rod (503) is provided on both the left and right sides of the second electric telescopic rod (502), a push plate (504) is fixedly installed on the upper end of the fixing rod (503), the push plate (504) and the output end of the second electric telescopic rod (502) are connected to the bottom of the bottom plate (401) inside the lower mold (4), and a sliding arm (505) is provided in the middle of the left and right ends of the connecting frame (5), and the sliding arm (505) is matched with the sliding groove (103) provided inside the base (1).

7. A mold clamping ejector time delay mechanism device according to claim 6, characterized in that: The push plate (504) is matched with the push rod groove 2 (105), and the push plate (504) passes through the push rod groove 2 (105) and is connected to the bottom plate (401). The output end of the second electric telescopic rod (502) is matched with the push rod groove 1 (104), and the second electric telescopic rod (502) passes through the push rod groove 1 (104) and is connected to the bottom plate (401).

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