Mold closing guide mechanism of injection molding mold

Abstract

The utility model relates to a mold closing guide mechanism of an injection molding mold. A lower mold is arranged at the top of a fixed table, guide rods are symmetrically arranged on the fixed table, a movable plate is arranged between the guide rods in a sliding mode, an upper mold is arranged at the bottom of the movable plate, and the two ends of the movable plate are connected with the guide rods in a sliding mode through guide sleeves. Through holes are evenly formed in the sliding sleeve, balls are arranged in the through holes, guide grooves are formed in the positions, corresponding to the balls, of the guide rod, an oil injection hole is formed in an inner cavity of the guide rod, a positioning block is arranged at the bottom of the guide rod, and a buffer block is arranged on the positioning block. And the impact force of the mold can be buffered during mold closing, damage is avoided, meanwhile, lubricating oil can be conveniently added into the guide mechanism, and the service life of the guide mechanism is prolonged.

Description

Technical Field

[0001] The utility model relates to a mold closing guide mechanism for an injection molding die, belonging to the technical field of injection molding die. Background Art

[0002] Injection molds are a commonly used molding device. When batch-producing certain parts with complex shapes, the heated and melted material (such as plastic, metal, etc.) is injected into the mold cavity under high pressure by the injection molding machine. After cooling and solidification, the molded product is obtained.

[0003] In order to ensure the accuracy of the cavity used to mold the product, the injection molding machine uses a guide mechanism to ensure the accuracy of mold closing. That is, accurate guide positioning is required during mold closing to ensure accurate docking between the upper and lower mold bases. The traditional mold has a single guide structure, and the guide mechanisms require close contact and cooperation. However, this tight structure is not convenient for lubrication of the friction points, which will cause wear after long-term use and affect the subsequent guide accuracy. Utility Model Content

[0004] In view of the problems in the related art, the present invention proposes a mold clamping guide mechanism for an injection molding mold to overcome the above technical problems existing in the existing related art.

[0005] To this end, the specific technical solutions adopted in this utility model are as follows:

[0006] A mold closing guide mechanism for an injection molding mold comprises a fixed table, a lower mold is fixedly provided on the top of the fixed table, guide rods are symmetrically fixedly provided on the fixed table, a movable plate is slidably provided between the guide rods, an upper mold is fixedly provided at the bottom of the movable plate, both ends of the movable plate are slidably connected to the guide rods through guide sleeves, a sliding sleeve is fixedly provided in the inner cavity of the guide sleeve, through holes are evenly provided on the sliding sleeve, balls are provided in the through holes, guide grooves are provided on the guide rods at positions corresponding to the balls, an oil filling hole is provided in the inner cavity of the guide rod, a positioning block is fixedly provided at the bottom of the guide rod, and a buffer block is provided on the positioning block.

[0007] As a further optimization, a top plate is fixedly provided on the top of the guide rod, a hydraulic telescopic rod is fixedly installed in the middle of the top plate, and the bottom end of the hydraulic telescopic rod is fixedly connected to the top of the movable plate.

[0008] As a further optimization, positioning holes are evenly opened at the edge of the lower mold, and positioning rods are fixedly provided at the bottom of the upper mold corresponding to the positioning holes, and the positioning rods are inserted into the positioning holes.

[0009] As a further optimization, the guide sleeve includes a shell, the sliding sleeve is fixedly arranged in the shell, the diameter of the ball corresponds to the through hole, and the ball is located in the guide groove.

[0010] As a further optimization, oil outlet holes are evenly opened on the top of the guide rod, the oil outlet holes are located on the guide groove, and the oil outlet holes are connected with the oil filling holes. A sealing plug is slidingly provided in the inner cavity of the oil filling hole, and the sealing plug is located between the oil outlet holes.

[0011] As a further optimization, a fixing ring is fixed on the outer side of the top of the guide rod, and an extrusion plate is provided inside the fixing ring. The extrusion plate is connected to the inner wall of the fixing ring through an extrusion spring. A blocking ball is fixed on the extrusion plate, and the position of the blocking ball corresponds to the oil outlet.

[0012] As a further optimization, a buffer groove is provided in the inner cavity of the positioning block, a buffer spring is fixedly provided in the inner cavity of the buffer groove, and a fixing rod at the bottom of the buffer block is embedded in the buffer groove and connected to the buffer spring.

[0013] As a further optimization, a bump is fixed at the bottom of the buffer groove inner cavity, a pressure sensor is provided on the top of the bump, the fixing rod at the bottom of the buffer block contacts the top of the bump, and the height of the buffer block corresponds to the height of the lower mold surface.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1. By setting the guide sleeve, when the movable plate moves downward during mold closing, the guide sleeve will also slide up and down on the guide rod to limit the upper mold at the bottom of the movable plate, ensuring accuracy during mold closing. In addition, during sliding friction, the ball inside the guide sleeve will rotate in the guide groove on the guide rod, effectively reducing the friction between them and ensuring smoother and more accurate guidance.

[0016] 2. By setting up the oil filling hole, during the use of the injection molding mold, lubricating oil can be added to the inside of the guide rod through the oil filling hole, and then enter the guide groove on the guide rod. As the guide sleeve slides up and down, the contact point between the two is directly lubricated, ensuring that the ball can rotate smoothly and improving the service life of the guide mechanism;

[0017] 3. By setting the positioning block, when the guide sleeve moves to the bottom, it will contact the buffer block, thereby cushioning the downward impact force of the moving plate. When the injection molding mold is completed, the buffer block will fully contact the positioning block, thereby limiting the guide sleeve and the moving plate from continuing to move downward, avoiding damage to the mold due to excessive movement, and improving its practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the specific embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation to the present invention.

[0019] Figure 1 It is a structural diagram of the utility model;

[0020] Figure 2 This is a schematic diagram of the guide sleeve structure of the utility model;

[0021] Figure 3 This is a schematic top view of the cross section of the oil filling hole of the utility model;

[0022] Figure 4 This is a schematic cross-sectional view of the positioning block of the present utility model;

[0023] Numbers in the figure: 1. Fixed table; 2. Lower mold; 3. Guide rod; 4. Moving plate; 5. Upper mold; 6. Guide sleeve; 7. Sliding sleeve; 8. Through hole; 9. Ball; 10. Guide groove; 11. Oil filling hole; 12. Positioning block; 13. Buffer block; 14. Top plate; 15. Hydraulic telescopic rod; 16. Positioning hole; 17. Positioning rod; 18. Oil outlet hole; 19. Sealing plug; 20. Fixed ring; 21. Extrusion plate; 22. Extrusion spring; 23. Buffer groove; 24. Buffer spring; 25. Bump; 26. Ball blocking. DETAILED DESCRIPTION

[0024] To further illustrate each embodiment, the present invention provides drawings, which are part of the disclosure of the present invention and are mainly used to illustrate the embodiments. They can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. By referring to these contents, ordinary technicians in this field should be able to understand other possible implementation methods and the advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components. Example

[0025] like Figures 1 to 4As shown, a mold closing guide mechanism for an injection molding mold includes a fixed platform 1, a lower mold 2 is fixed on the top of the fixed platform 1, guide rods 3 are symmetrically fixed on the fixed platform 1, a movable plate 4 is slidably provided between the guide rods 3, an upper mold 5 is fixed at the bottom of the movable plate 4, both ends of the movable plate 4 are slidably connected to the guide rod 3 through a guide sleeve 6, a sliding sleeve 7 is fixed in the inner cavity of the guide sleeve 6, through holes 8 are evenly opened on the sliding sleeve 7, and balls 9 are provided in the through holes 8, guide grooves 10 are opened on the guide rod 3 at positions corresponding to the balls 9, an oil filling hole 11 is opened in the inner cavity of the guide rod 3, a positioning block 12 is fixed at the bottom of the guide rod 3, a buffer block 13 is provided on the positioning block 12, a top plate 14 is fixed at the top of the guide rod 3, and a fixed top plate 14 is fixed in the middle A hydraulic telescopic rod 15 is fixedly installed, and the bottom end of the hydraulic telescopic rod 15 is fixedly connected to the top of the movable plate 4 to provide power for the injection molding mold when the mold is closed. Positioning holes 16 are evenly opened at the edge of the lower mold 2, and positioning rods 17 are fixedly provided at the bottom of the upper mold 5 corresponding to the positioning holes 16. The positioning rods 17 are inserted into the positioning holes 16. When the mold is closed, the positioning rods 17 enter the positioning holes 16 to complete the mold closing operation, further ensuring the accuracy of the injection molding mold closing. The guide sleeve 6 includes an outer shell, and the sliding sleeve 7 is fixedly arranged in the outer shell. The diameter of the ball 9 corresponds to the through hole 8. The ball 9 is located in the guide groove 10, so that the ball 9 can rotate freely in the through hole 8, thereby reducing the friction between the guide sleeve 6 and the guide rod 3. Example

[0026] A mold closing guide mechanism for an injection molding mold, wherein oil outlet holes 18 are evenly opened on the top of its guide rod 3, the oil outlet holes 18 are located on the guide groove 10, and the oil outlet holes 18 are connected with the oil filling hole 11, and a sealing plug 19 is slidingly provided in the inner cavity of the oil filling hole 11, and the sealing plug 19 is located between the oil outlet holes 18. When not in use, the sealing plug 19 can be inserted into the oil filling hole 11 to prevent the lubricating oil from flowing out of the oil outlet hole 18, and a fixing ring 20 is fixedly provided on the outer side of the top of the guide rod 3, and an extrusion plate 21 is provided in the fixing ring 20, and the extrusion plate 21 is connected to the inner wall of the fixing ring 20 by an extrusion spring 22, and a blocking ball 26 is fixed on the extrusion plate 21, and the position of the blocking ball 26 corresponds to the oil outlet hole 18. The blocking ball 26 will be pressed against the outside of the oil outlet hole 18 under the action of the extrusion spring 22, and the lubricating oil can naturally and slowly leak outward, thereby moving downward along the guide groove 10 to lubricate the inside of the guide sleeve 6. Example

[0027] A mold closing guide mechanism for an injection molding mold, wherein a buffer groove 23 is provided in the inner cavity of the positioning block 12, a buffer spring 24 is fixedly provided in the inner cavity of the buffer groove 23, a fixing rod at the bottom of the buffer block 13 is embedded in the buffer groove 23 and connected to the buffer spring 24, a protrusion 25 is fixedly provided at the bottom of the inner cavity of the buffer groove 23, a pressure sensor is provided at the top of the protrusion 25, the fixing rod at the bottom of the buffer block 13 contacts the top of the protrusion 25, and the height of the buffer block 13 corresponds to the surface height of the lower mold 2, when the guide sleeve 6 contacts the buffer block 13, it will be squeezed into the buffer groove 23, thereby buffering its impact force through the buffer spring 24, and when the bottom of the buffer block 13 contacts the pressure sensor on the protrusion 25, the hydraulic telescopic rod 15 can be stopped to avoid excessive downward movement of the movable plate 4.

[0028] When the guide sleeve 6 is in the state of being pressed down, the guide sleeve 6 is in the state of being pressed down, and the guide sleeve 6 is in the state of being pressed down, and the guide sleeve 6 is in the state of being pressed down, and the guide sleeve 6 is in the state of being pressed down, and the guide sleeve 6 is in the state of being pressed down, and the guide sleeve 6 is in the state of being pressed down, and the guide sleeve 6 is in the state of being pressed down, and the guide sleeve 6 is in the state of being pressed down, and the guide sleeve 6 is in the state of being pressed down, and the guide sleeve 6 is in the state of being pressed down, and the guide sleeve 6 is in the state of being pressed down, and the guide sleeve

[0029] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A mold clamping guide mechanism for an injection molding mold, comprising a fixed platform (1), characterized in that: A lower mold (2) is provided on the top of the fixed platform (1), and guide rods (3) are symmetrically provided on the fixed platform (1). A movable plate (4) is slidably provided between the guide rods (3), and an upper mold (5) is provided at the bottom of the movable plate (4). Both ends of the movable plate (4) are slidably connected to the guide rods (3) through guide sleeves (6). A sliding sleeve (7) is provided in the inner cavity of the guide sleeve (6), and through holes (8) are evenly provided on the sliding sleeve (7). Balls (9) are provided in the through holes (8). Guide grooves (10) are provided on the guide rods (3) at positions corresponding to the balls (9). An oil filling hole (11) is provided in the inner cavity of the guide rods (3). A positioning block (12) is provided at the bottom of the guide rods (3), and a buffer block (13) is provided on the positioning block (12); The top of the guide rod (3) is evenly provided with oil outlet holes (18), the oil outlet holes (18) are located on the guide groove (10), and the oil outlet holes (18) are connected with the oil filling holes (11). The inner cavity of the oil filling hole (11) is slidably provided with a sealing plug (19), and the sealing plug (19) is located between the oil outlet holes (18); a fixing ring (20) is provided on the outer side of the top of the guide rod (3), and an extrusion plate (21) is provided in the fixing ring (20). The extrusion plate (21) is connected to the inner wall of the fixing ring (20) through an extrusion spring (22). A blocking ball (26) is provided on the extrusion plate (21), and the position of the blocking ball (26) corresponds to the oil outlet hole (18).

2. The mold clamping guide mechanism for an injection molding mold according to claim 1, characterized in that: The top of the guide rod (3) is provided with a top plate (14), the middle of the top plate (14) is provided with a hydraulic telescopic rod (15), and the bottom end of the hydraulic telescopic rod (15) is fixedly connected to the top of the movable plate (4).

3. The mold clamping guide mechanism for an injection molding mold according to claim 1, wherein: Positioning holes (16) are evenly provided at the edge of the lower mold (2), and positioning rods (17) are provided at the bottom of the upper mold (5) corresponding to the positioning holes (16), and the positioning rods (17) are inserted into the positioning holes (16).

4. The mold clamping guide mechanism for injection molding according to claim 1, characterized in that: The guide sleeve (6) comprises a shell, the sliding sleeve (7) is arranged in the shell, the diameter of the ball (9) corresponds to the through hole (8), and the ball (9) is located in the guide groove (10).

5. The mold clamping guide mechanism for injection molding according to claim 1, characterized in that: The inner cavity of the positioning block (12) is provided with a buffer groove (23), the inner cavity of the buffer groove (23) is provided with a buffer spring (24), and the bottom fixing rod of the buffer block (13) is embedded in the buffer groove (23) and connected with the buffer spring (24).

6. The mold clamping guide mechanism for injection molding according to claim 5, characterized in that: A convex block (25) is provided at the bottom of the inner cavity of the buffer groove (23), a pressure sensor is provided at the top of the convex block (25), a fixing rod at the bottom of the buffer block (13) contacts the top of the convex block (25), and the height of the buffer block (13) corresponds to the surface height of the lower mold (2).

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