Guide device for injection molding machine

Abstract

The utility model provides a guide device for an injection molding machine, which is used in the injection molding machine, the injection molding machine comprises a piston rod and a mounting seat, the mounting seat is connected with the piston rod, the guide device comprises a guide plate and a guide mechanism, the guide plate is provided with a through hole and the guide mechanism, one end of the piston rod extends into the mounting seat and penetrates through the through hole, and the other end of the piston rod is connected with the guide mechanism. The guide mechanism comprises a guide rod, a fixing seat and a sleeve, the sleeve penetrates through the guide plate to be fixedly connected with the guide plate, the guide rod penetrates through the sleeve to be slidably connected with the sleeve, the two sides of the guide rod are arranged in the extending direction of the piston rod and fixedly connected with the fixing seat, and the fixing seat is fixedly connected with the mounting seat. The service life is long.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molding machines, and particularly relates to a guiding device for an injection molding machine. Background Art

[0002] With the development of production and the progress of technology, injection molding machines play an important role in modern manufacturing, and the accuracy of injection has become a key link. Among them, horizontal injection molding machines use the movement of the piston rod for injection. During the injection process, the piston rod may encounter vibration and swing, which affect the injection molding effect. In order to ensure the smooth and accurate movement of the piston rod, a guiding rod is usually installed at the piston rod.

[0003] For example, in the patent document with the patent application number CN202323264619.7 and the publication date of July 19, 2024, a single-cylinder injection structure is disclosed, which relates to the technical field of injection molding machines, and includes a mounting seat, an injection cylinder and a motor. The mounting seat is in a square frame shape, the left end of the injection cylinder is fixedly connected inside the through hole at the right end of the mounting seat, a piston is slidably connected inside the injection cylinder, the right end of the piston rod is fixedly sleeved inside the inner side of the piston, the left end of the piston rod extends to the outside of the left end of the injection cylinder and is rotatably connected with a piston rod support plate, a connection hole is opened in the middle of the left end of the piston rod, the front and rear sides of the bottom of the piston rod support plate are respectively fixedly connected with the left ends of two transverse guide rods, and the two guide rods are respectively slidably connected with two sliding holes on the right side of the mounting seat; a blind hole is opened in the middle of the right end of the piston rod, and a sliding ring is fixedly connected to the right end inside the blind hole. The inner side of the sliding ring is slidably connected with a transmission prism horizontally. In this single-cylinder injection structure, during injection, the part that moves along with the piston rod is less, the injection inertia is reduced, precise control is achieved, and high-speed injection is facilitated.

[0004] In the above literature, the front and rear sides of the bottom of the piston rod support plate are respectively fixedly connected with the left ends of two transverse guide rods, and the two guide rods are respectively slidably connected with two sliding holes on the right side of the mounting seat. There is a gap between the guide rod and the sliding hole. Since the guide rod is only fixed on the piston support plate on one side and slides inside the sliding hole on the other side, when the guide rod slides inside the sliding hole, because the sliding hole is larger than the diameter of the guide rod, one end of the guide rod inside the sliding hole is prone to swing inside the sliding hole, resulting in unstable guiding of the guide rod when the piston moves. Especially when there is a foreign object attached and smaller than the gap between the guide rod and the sliding hole when the guide rod extends, then when the guide rod retracts, the friction between the foreign object and the inner wall of the sliding hole drops to the bottom of the sliding hole, causing abnormal sliding of the guide rod; furthermore, when the elongation of the piston rod is relatively large, the pressure of the piston rod on the guide rod increases. At this time, the sliding hole is only slidably connected with one side of the guide rod, and the internal structure of the sliding hole is prone to damage after a period of use, thus affecting the guiding function of the guide rod. Summary of the Invention

[0005] The utility model provides a guide device for an injection molding machine. A guide mechanism is arranged on a guide plate, a guide rod is arranged on a fixed seat, and the sliding of the guide mechanism and the guide rod completes the movement of the guide plate. The utility model has good guiding effect, is easy to use, and has a long service life.

[0006] To achieve the above-mentioned purpose, the technical solution of the utility model is: a guide device for an injection molding machine, which is used in an injection molding machine, wherein the injection molding machine includes a piston rod and a mounting seat, the mounting seat is connected to the piston rod, includes a guide plate and a guide mechanism, the guide plate is provided with a through hole and a guide mechanism, one end of the piston rod extends into the mounting seat and is arranged through the through hole, the guide mechanism includes a guide rod, a fixed seat and a sleeve, the sleeve passes through the guide plate and is fixedly connected to the guide plate, the guide rod passes through the sleeve and is slidably connected to the sleeve, the two sides of the guide rod are arranged along the extension direction of the piston rod and are fixedly connected to the fixed seat, and the fixed seat is fixedly connected to the mounting seat.

[0007] The above arrangement is that a guide plate is provided at one end of the piston rod extending into the mounting seat, and the guide plate abuts against the piston rod to enhance the smooth and accurate movement of the piston rod, thereby preventing the piston rod from deviating or swinging during the activity. In order to ensure the accurate movement of the guide plate, the guide rod is arranged on the fixed seat, and the fixed seat is installed on the mounting seat to increase the bearing capacity of the guide rod. The guide plate is connected to the guide rod through a sleeve, and the sleeve can provide a limiting effect on the guide rod from all sides, so that the guide plate can move better on the guide rod, and the sleeve is fixed on the guide plate, so that the piston rod telescopes and drives the guide plate to move, and then drives the sliding of the sleeve and the guide rod to complete the reliable movement of the guide plate, and the movement of the guide plate can limit one end of the piston rod, preventing one end of the piston rod from shaking left and right when extending, thereby affecting the injection molding effect, thereby realizing the guiding effect of the guide plate on the piston rod, the guiding effect is good, the bearing capacity of the piston rod is increased, and the overall rigidity of the piston rod is enhanced, and the service life is extended.

[0008] Furthermore, a boss is provided at one end of the piston rod passing through the guide plate, and the boss passes through the through hole and abuts against a side surface of the guide plate.

[0009] In the above arrangement, the boss passes through the through hole and the edge of the boss abuts against the guide plate, which can make the guide plate and the piston rod dock, so that the guide plate provides a guiding function for the piston rod. The through hole and the piston rod have consistent axes, ensuring that the movement trajectories of the guide plate and the piston rod are consistent. The through hole provides support for the piston rod by abutting against the boss, and can ensure that the normal movement trajectory will not be offset when the piston rod extends a large amount, thereby improving the stability of the piston rod.

[0010] Furthermore, a sleeve mounting hole is also provided on the guide plate, and the sleeve includes a sleeve fixing platform and a sleeve body, the sleeve body is fixedly connected to the sleeve fixing platform, the sleeve body passes through the sleeve mounting hole and the sleeve fixing platform is fixed on the guide plate.

[0011] With the above settings, the sleeve body is arranged to pass through the guide plate to increase the contact area between the sleeve and the guide rod, extend the guiding effect of the guide rod on the sleeve, and enable the sleeve to move correctly on the guide rod. The sleeve fixing table abuts against the guide plate so that when the piston rod retracts to push the guide plate to move, the guide plate can drive the sleeve to move, enabling the guide plate to play a guiding role for the piston rod through the sleeve.

[0012] Furthermore, a cylinder is also provided on the mounting seat, and the cylinder is fixedly connected to one side of the guide plate.

[0013] With the above settings, during the movement of the guide plate, the cylinder can push for auxiliary guiding movement, reduce the thrust of the piston rod acting on the guide plate, thereby protecting the contact surface between the convex platform and the through hole, and improving stability.

[0014] Furthermore, two guiding mechanisms are provided, and the guiding mechanisms are symmetrically arranged in the horizontal direction on both sides of the guide plate.

[0015] With the above settings, the two guiding mechanisms are symmetrically arranged on both sides of the guide plate. The guiding mechanisms can provide a stable movement path for the guide plate and effectively reduce the vibration of the guide plate during movement, thereby ensuring the guiding effect of the guide plate on the piston rod, and the supporting effect of the guide plate on the piston rod is provided by arranging the guiding mechanisms on both sides of the guide plate.

[0016] Furthermore, the fixing seat is arranged to match the guiding mechanism, and the fixing seats are respectively fixedly arranged on both sides of the mounting seat.

[0017] With the above settings, by arranging the fixing seats on both sides of the mounting seat, the load borne by the guide rod can be evenly distributed on the fixing seats, and a stable installation position can be provided for the guide rod, ensuring that the guide rod will not move due to the movement of the guide plate, guaranteeing the movement track of the guide plate, and improving the overall stability.

[0018] Furthermore, a groove is provided on the side of the guide rod away from the injection molding machine.

[0019] With the above settings, during the process of the sleeve moving to the side away from the injection molding machine on the guide rod, the sleeve will push the foreign objects adhered to the guide rod to one side of the guide rod. When the guide plate drives the sleeve away from the groove direction, the groove can serve as a foreign object accommodation space, and the foreign objects in the groove can be cleaned regularly to prevent the phenomenon that the sleeve cannot move due to foreign object blockage, thereby ensuring the normal movement of the sleeve.

[0020] Furthermore, a convex block is arranged downward on one side of the guide plate, and the convex block is connected to the cylinder.

[0021] With the above settings, the side of the guide plate connected to the cylinder extends downward, which can effectively bear the thrust of the cylinder acting on the guide plate. Brief Description of the Drawings

[0022] Figure 1 Fig. is a schematic diagram of the overall structure when the piston rod abuts against the guide plate in the injection molding machine applying the present utility model.

[0023] Figure 2 Fig. is a schematic diagram of the overall structure when the piston rod separates from the guide plate in the injection molding machine applying the present utility model.

[0024] Figure 3 Fig. is a side view of the present utility model.

[0025] Figure 4 Fig. is a bottom view of the present utility model.

[0026] Figure 5 Fig. is a front view of the guide plate in the present utility model.

[0027] 1 - Injection molding machine; 10 - Piston rod fixing cavity; 11 - Piston rod; 111 - Boss; 12 - Cylinder; 2 - Mounting seat; 3 - Guide plate; 30 - Sleeve mounting hole; 31 - Fixed seat; 32 - Guide rod; 321 - Groove; 33 - Sleeve; 331 - Sleeve fixing platform; 332 - Sleeve body; 34 - Through hole. Detailed Description of the Embodiment

[0028] The present utility model will be further described in detail below with reference to the drawings and specific embodiments.

[0029] As shown in Figures 1 to 5 , a guiding device for an injection molding machine is used in the injection molding machine 1. The injection molding machine 1 includes a piston rod 11 and a mounting seat 2. The piston rod 11 is arranged in the piston rod driving cavity 10, and the piston rod driving cavity 10 is fixedly connected to the mounting seat 2. The guiding device includes a through hole 34 and a guiding mechanism. One end of the piston rod 11 extends into the mounting seat and is arranged through the through hole 34. The guiding mechanism includes a guide rod 32, a fixed seat 31 and a sleeve 33. The sleeve 33 passes through the guide plate 3 and is fixedly connected to the guide plate 3. The guide rod 32 passes through the sleeve 33 and is slidably connected to the sleeve 33. Both sides of the guide rod 32 are arranged along the extending direction of the piston rod 11 and are fixedly connected to the fixed seat 31. The fixed seat 31 is fixedly connected to the mounting seat 2. A guide plate 3 is arranged at the piston rod 11. In this embodiment, in order to reduce the friction between the sleeve and the guide rod, the inner wall surface of the sleeve is set as a smooth surface.

[0030] The smooth and accurate movement of the piston rod 11 is enhanced by the guide plate 3 to prevent the piston rod 11 from deflecting or swinging during movement. For the accurate movement of the guide plate 3, the guide rod is arranged on the fixed seat 31, and the fixed seat 31 is installed on the mounting seat 2 to increase the bearing capacity of the guide rod. The guide plate 3 is connected to the guide rod 32 through the sleeve 33. The sleeve 33 can provide a surrounding limiting effect, enabling the guide plate 3 to move better on the guide rod 32. The sliding of the sleeve 33 and the guide rod completes the movement of the guide plate 3, realizing the guiding effect of the guide plate 3 on the piston rod 11, increasing the bearing capacity of the piston rod 11, and enhancing the overall rigidity of the piston rod 11.

[0031] As Figure 2 shown, a boss 111 is provided on one side of the piston rod 11 passing through the guide plate 3. The boss 111 passes through the through hole 34 and the convex edge of the boss 111 abuts against one side surface of the guide plate 3, enabling the guide plate 3 to be docked with the piston rod 11, so that the guide plate 3 provides a guiding effect for the piston rod 11. The through hole 34 and the axis of the piston rod 11 are aligned to ensure that the movement trajectories of the guide plate 3 and the piston rod 11 are the same. The through hole 34 provides support for the piston rod 11 by abutting against the boss 111, and can also ensure that the normal movement trajectory will not deflect when the extension amount of the piston rod 11 is large, thereby improving the stability of the piston rod 11.

[0032] As Figure 2 and Figure 5 shown, a sleeve mounting hole 30 is also provided on the guide plate 3. The sleeve 33 includes a sleeve fixing platform 331 and a sleeve body 332. The sleeve body 332 is fixedly connected to the sleeve fixing platform 331. The sleeve body 332 passes through the sleeve mounting hole 30 and the sleeve fixing platform 331 is fixed on the guide plate 3. The sleeve body 332 passes through the guide plate 3 to increase the contact area between the sleeve 33 and the guide rod, extend the guiding effect of the guide rod on the sleeve 33, enable the sleeve 33 to move correctly on the guide rod 32. One end surface of the sleeve 33 abuts against the guide plate 3, so that when the piston rod 11 pushes the guide plate 3 to move, the guide plate 3 can drive the sleeve 33 to move, enabling the guide plate 3 to play a guiding role on the piston rod 11 through the sleeve 33.

[0033] As Figure 2 and Figure 4 shown, there are two guide rods 32. The fixed seat is arranged to match the guide rod 32. The fixed seats 31 are respectively fixedly arranged on both sides of the mounting seat 2. Arranging the fixed seats 31 on both sides of the mounting seat 2 can evenly distribute the load borne by the guide rod 32 on the fixed seats 31, and can provide a stable installation position for the guide rod 32, ensuring that the guide rod 32 will not move due to the movement of the guide plate 3, guaranteeing the movement trajectory of the guide plate 3, and improving the overall stability.

[0034] As Figure 2As shown in the figure, a groove 321 is provided on the side of the guide rod 32 away from the injection molding machine 1. During the movement of the sleeve 33 on the guide rod 32, the sleeve 33 will push the foreign objects attached to the guide rod 32 to one side of the guide rod 32. When the guide plate 3 drives the sleeve 33 away from the groove 321, the groove 321 can provide a space for accommodating the foreign objects, so that the foreign objects can be manually removed, preventing the phenomenon that the sleeve 33 cannot move due to blockage by foreign objects, thus ensuring the normal movement of the sleeve 33.

[0035] As Figure 3 shown in the figure, the injection molding machine 1 is further provided with a cylinder 12, and the cylinder 12 is connected to one side of the guide plate 3. During the movement of the guide plate 3, the cylinder 12 can push to assist the guiding movement, reducing the thrust of the piston rod 11 acting on the guide plate 3, thereby protecting the contact surface between the convex platform 111 and the through hole 34 and improving the stability.

[0036] As Figure 4 shown in the figure, guiding mechanisms are horizontally arranged on both sides of the guide plate 3. The guiding mechanisms can provide a stable movement path for the guide plate 3 and effectively reduce the vibration of the guide plate 3 during the movement, thereby ensuring the guiding effect of the guide plate 3 on the piston rod 11, and the supporting effect of the guide plate 3 on the piston rod 11 is provided by arranging guiding mechanisms on both sides of the guide plate 3.

[0037] As Figure 5 shown in the figure, a convex block is provided on the side where the guide plate 3 is connected to the cylinder 12 and extends downward. The side where the guide plate 3 is connected to the cylinder 12 extends downward, which can effectively bear the thrust of the cylinder 12 acting on the guide plate 3.

[0038] The working principle of the present utility model: During the movement of the piston rod 11 of the injection molding machine 1, the through hole 34 on the guide plate 3 abuts against the convex platform 111 on the piston rod 11. Sleeves 33 are arranged on both sides of the guide plate 3. The sleeves 33 pass through the guide plate 3 and are fixedly connected to the guide plate 3. The guide rod 32 passes through the sleeves 33 and is slidably connected to the sleeves 33. The guide rod 32 is fixedly connected to the fixed seat 31, and the fixed seat 31 is fixedly connected to the mounting seat 2. When the piston rod 11 pushes the guide plate 3 to move, the guide plate 3 drives the sleeves 33 to move, and the sleeves 33 move along the guide rod 32 to provide a guiding effect for the guide plate 3, thereby providing a guiding effect for the movement of the piston rod 11.

[0039] During the movement of the guide plate 3, the cylinder 12 can push to assist the guiding movement, reducing the thrust of the piston rod 11 acting on the guide plate 3, thereby protecting the contact surface between the convex platform 111 and the through hole 34 and improving the stability.

Claims

1. A guide device for an injection molding machine, used in an injection molding machine, wherein the injection molding machine comprises a piston rod and a mounting seat, wherein the mounting seat is connected to the piston rod, and wherein: It includes a guide plate and a guide mechanism, the guide plate is provided with a through hole and a guide mechanism, one end of the piston rod extends into the mounting seat and is arranged through the through hole, the guide mechanism includes a guide rod, a fixed seat and a sleeve, the sleeve passes through the guide plate and is fixedly connected to the guide plate, the guide rod passes through the sleeve and is slidably connected to the sleeve, both sides of the guide rod are arranged along the extension direction of the piston rod and are fixedly connected to the fixed seat, and the fixed seat is fixedly connected to the mounting seat.

2. A guide device for an injection molding machine according to claim 1, characterized in that: A boss is provided at one end of the piston rod passing through the guide plate, and the boss passes through the through hole and abuts against a side surface of the guide plate.

3. The guide device for an injection molding machine according to claim 1, characterized in that: A sleeve mounting hole is also provided on the guide plate. The sleeve comprises a sleeve fixing platform and a sleeve body. The sleeve body is fixedly connected to the sleeve fixing platform. The sleeve body passes through the sleeve mounting hole and the sleeve fixing platform is fixed on the guide plate.

4. The guide device for an injection molding machine according to claim 1, characterized in that: A cylinder is also provided on the mounting seat, and the cylinder is fixedly connected to one side of the guide plate.

5. The guide device for an injection molding machine according to claim 1, characterized in that: The guide mechanisms are provided with two, and the guide mechanisms are symmetrically provided on both sides of the guide plate in the horizontal direction.

6. The guide device for an injection molding machine according to claim 1, characterized in that: The fixing seat is matched with the guide mechanism, and the fixing seat is fixedly arranged on both sides of the mounting seat respectively.

7. The guide device for an injection molding machine according to claim 1, characterized in that: A groove is arranged on the side of the guide rod away from the injection molding machine.

8. The guide device for an injection molding machine according to claim 1, characterized in that: A protruding block is downwardly arranged on one side of the guide plate, and the protruding block is connected to the cylinder.

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