Self-locking structure of oil cylinder sliding block of plastic mold

Abstract

The invention belongs to the technical field of mold oil cylinder sliding block self-locking, and particularly relates to a plastic mold oil cylinder sliding block self-locking structure which comprises a bottom plate, a movable mold plate is fixedly installed at the top of the bottom plate, a fixed mold plate is arranged at the top of the movable mold plate, a sliding groove is formed in the left side in the fixed mold plate, and the left side in the sliding groove extends out of the fixed mold plate. An oil cylinder is fixedly installed on the left side of the fixed mold plate, the output end of the oil cylinder is located in the sliding groove, the output end of the oil cylinder is fixedly connected with a first sliding block, a second sliding block is slidably connected into the sliding groove, and a connecting assembly is arranged between the second sliding block and the first sliding block; the self-locking block is inserted into the self-locking hole to conduct self-locking limiting on the second sliding block, the core pulling body and the second sliding block cannot retreat during injection molding, the quality of an injection molding mold cannot be affected, meanwhile, the two sides of the second sliding block are locked and limited, the second sliding block is locked stably, and the service life of the mold is prolonged. And the using effect of the self-locking assembly is good.

Description

Technical Field

[0001] The invention belongs to the technical field of self-locking of a mold oil cylinder slide block, in particular to a self-locking structure of a plastic mold oil cylinder slide block. Background Art

[0002] Plastic molds are widely used in industrial production to manufacture various plastic products. In actual use, it is often necessary to design a core puller on the mold according to the structure of the product. The most commonly used core puller is a core puller structure composed of a cylinder slider. Usually the cylinder is directly connected to the slider. Due to the structure of the cylinder itself, the cylinder piston rod will retreat under the injection pressure during the production process, and the slider will also retreat accordingly. In this way, the products produced will have problems such as excess glue and burrs at the joint line around the slider.

[0003] A patent application CN103171099B discloses a self-locking structure of a plastic mold cylinder slider, and the key points of its technical solution are: it includes a fixed mold, a first slider, a cylinder and a core pulling body, the first slider is slidably connected to the core pulling body and the fixed mold respectively; a stopper is provided between the first slider and the cylinder, the stopper is embedded in the fixed mold, and an elastic component that can push the upper part of the stopper out of the fixed mold is installed under the stopper; a pressure block component for pressing the upper part of the stopper back into the fixed mold is provided on the first slider, and one end of the pressure block component is fixedly connected to the piston rod of the cylinder; the other end of the pressure block component is slidably connected to the first slider, and the first slider is provided with a limiting component for preventing the pressure block component from sliding out close to one end of the cylinder, and when the pressure block component slides to the limiting component, it can drive the first slider to slide in the fixed mold.

[0004] However, the above technology often has the following defects: the existing self-locking structure of the cylinder slider only blocks the slider from retreating through the block when in use, and the block can only block one side of the slider, so that the self-locking structure cannot plug and lock the slider, and the use effect of the self-locking structure is not good enough. Therefore, the present invention provides a self-locking structure for a plastic mold cylinder slider. Summary of the invention

[0005] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0006] The technical solution adopted by the present invention to solve the technical problem is: the self-locking structure of the slide block of the plastic mold cylinder described in the present invention comprises a bottom plate, a movable template is fixedly installed on the top of the bottom plate, and a fixed template is arranged on the top of the movable template;

[0007] A slide groove is provided on the left side of the fixed template, and the left side of the slide groove extends to the outside of the fixed template. A cylinder is fixedly installed on the left side of the fixed template, and the output end of the cylinder is located inside the slide groove. A slider 1 is fixedly connected to the output end of the cylinder, and a slider 2 is slidably connected inside the slide groove. A connecting component is provided between the slider 2 and the slider 1, and a core pulling body is fixedly connected to the right side of the slider 2, and the right end of the core pulling body passes through the fixed mold core;

[0008] The front and rear surfaces inside the slide groove are respectively connected with connecting pipe 2 and connecting pipe 1 on the left and right sides, a ventilation pipe is fixedly connected between connecting pipe 1 and connecting pipe 2, connecting pipe 1 and connecting pipe 2 are communicated with the inside of the ventilation pipe, an extrusion assembly is arranged inside connecting pipe 2, a transmission assembly is arranged between connecting pipe 1, connecting pipe 2 and the ventilation pipe, a self-locking block is slidably connected inside connecting pipe 1, the self-locking block is installed with the transmission assembly, self-locking holes are opened on the front and rear surfaces of the slider 2, and one side of the self-locking block is inserted into the self-locking hole.

[0009] Preferably, the connecting component includes an inner groove opened inside the slider 2, a limit plate is slidably connected inside the inner groove, a connecting rod 2 is fixedly connected to the left side of the limit plate, a through hole is opened on the left side of the inner groove, the through hole extends to the outside of the slider 2 on the left side, the connecting rod 2 passes through the through hole on the left side, the slider 1 is fixedly connected to the connecting rod 1 on the right side, and the connecting rod 1 is fixedly connected to the connecting rod 2.

[0010] Preferably, the diameter of the limiting plate is larger than the inner diameter of the through hole.

[0011] Preferably, the extrusion assembly includes an extrusion block slidably connected to the inside of the connecting pipe 2, a fixing ring is fixedly connected to the inside of the connecting pipe 2, and a spring 1 is fixedly connected between the extrusion block and the fixing ring.

[0012] Preferably, an extrusion rod is fixedly connected to a side of the extrusion block opposite to the fixing ring, one end of the extrusion rod passes through the fixing ring, and the extrusion rod is slidably connected to the fixing ring.

[0013] Preferably, the transmission assembly includes a piston 1 slidably connected to the inside of a connecting tube 2 and a piston 2 slidably connected to the inside of a connecting tube 1, the piston 1 is fixedly connected to an extrusion rod, one side of the piston 2 is fixedly connected to a support rod, one end of the support rod is fixedly connected to a connecting block, and a spring 2 is fixedly connected between the connecting block and the self-locking block.

[0014] Preferably, both front and rear ends of the right side of the slider are arranged in an arc shape, and the side of the extrusion block that is in contact with the slider is arranged in an arc shape.

[0015] Preferably, the connecting pipe 1, the connecting pipe 2 and the ventilation pipe are arranged together to form a U-shape.

[0016] The beneficial effects of the present invention are as follows:

[0017] 1. The self-locking structure of a plastic mold cylinder slider described in the present invention performs self-locking and limiting on the slider 2 by inserting the self-locking block into the self-locking hole, and ensures that the core pulling body and the slider 2 will not retreat during injection molding, and will not affect the quality of the injection mold. At the same time, by locking and limiting both sides of the slider 2, the slider 2 is more stable when locked, and the use effect of the self-locking component is better.

[0018] 2. The self-locking structure of a plastic mold cylinder slider described in the present invention can make the extrusion assembly and the transmission assembly work by driving the slider one to slide through the cylinder, and facilitates the insertion, locking and disengagement and unlocking between the self-locking block and the self-locking hole, so that the self-locking structure is easy to use and no other power is required to self-lock the slider two. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below in conjunction with the accompanying drawings.

[0020] Figure 1 is a stereogram of the present invention;

[0021] Figure 2 is a partial cross-sectional view of the present invention;

[0022] Figure 3 It is a partial cross-sectional view of the fixed template in the present invention;

[0023] Figure 4 yes Figure 3 A partial enlarged view of the middle part;

[0024] Figure 5 yes Figure 3 A partial enlarged view of point B in the middle;

[0025] Figure 6 It is a three-dimensional diagram of a slider 1 and a slider 2 of the present invention.

[0026] In the figure: 1. bottom plate; 2. moving plate; 3. fixed plate; 4. oil cylinder; 5. slide; 6. core-pulling body; 7. slider 1; 8. connecting rod 1; 9. slider 2; 10. vent pipe; 11. connecting pipe 1; 12. connecting pipe 2; 13. piston 1; 14. extrusion rod; 15. fixing ring; 16. spring 1; 17. extrusion block; 18. through hole; 19. connecting rod 2; 20. inner groove; 21. limit plate; 22. self-locking hole; 23. self-locking block; 24. spring 2; 25. connecting block; 26. support rod; 27. piston 2. DETAILED DESCRIPTION

[0027] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0028] Embodiment 1: Figures 1 to 5 As shown, a self-locking structure of a plastic mold cylinder slider according to an embodiment of the present invention comprises a bottom plate 1, a movable plate 2 is fixedly mounted on the top of the bottom plate 1, and a fixed plate 3 is arranged on the top of the movable plate 2;

[0029] A slide groove 5 is provided on the left side inside the fixed mold plate 3, and the left side inside the slide groove 5 extends to the outside of the fixed mold plate 3. A cylinder 4 is fixedly installed on the left side of the fixed mold plate 3, and the output end of the cylinder 4 is located inside the slide groove 5. A slider 1 7 is fixedly connected to the output end of the cylinder 4. A slider 2 9 is slidably connected inside the slide groove 5. A connecting component is provided between the slider 2 9 and the slider 1 7. A core pulling body 6 is fixedly connected to the right side of the slider 2 9, and the right end of the core pulling body 6 passes through the fixed mold core;

[0030] The front and rear surfaces of the interior of the slide groove 5 are respectively connected with the connecting pipe 2 12 and the connecting pipe 1 11, and the ventilation pipe 10 is fixedly connected between the connecting pipe 1 11 and the connecting pipe 2 12. The connecting pipe 1 11 is in communication with the interior of the connecting pipe 2 12 and the ventilation pipe 10. An extrusion component is arranged inside the connecting pipe 2 12, and a transmission component is arranged between the connecting pipe 1 11, the connecting pipe 2 12 and the ventilation pipe 10. A self-locking block 23 is slidably connected inside the connecting pipe 11, and the self-locking block 23 is installed with the transmission component. The front and rear surfaces of the slider 2 9 are provided with self-locking holes 22, and one side of the self-locking block 23 is inserted into the self-locking hole 22. When working, the bottom of the bottom plate 1 is fitted with the flat ground to make the movement The template 2 and the fixed template 3 are placed stably, and then the mold between the movable template 2 and the fixed template 3 is injection molded by an external injection molding machine. During injection molding, the self-locking block 23 is inserted into the self-locking hole 22 to self-lock the slider 29, and the core pulling body 6 and the slider 29 will not retreat during injection molding, and will not affect the quality of the injection mold. When pulled out, it is connected to the external equipment through the cylinder 4, and the cylinder 4 drives the slider 17 to move, and drives the connecting component to work after the slider 17 slides, and can also be disengaged from the extrusion component for extrusion, and then the self-locking block 23 is moved out of the self-locking hole 22 through the transmission component, and the slider 29 is disengaged from self-locking, and then the slider 29 and the core pulling body 6 are driven out through the connecting component.

[0031] The connecting component includes an inner groove 20 provided inside the slider 29, and a limit plate 21 is slidably connected inside the inner groove 20. A connecting rod 2 19 is fixedly connected to the left side of the limit plate 21. A through hole 18 is provided inside the inner groove 20 on the left side, and the through hole 18 extends to the outside of the slider 29 on the left side. The connecting rod 2 19 passes through the through hole 18 on the left side, and a connecting rod 1 8 is fixedly connected to the right side of the slider 7. The connecting rod 1 8 is fixedly connected to the connecting rod 2 19; during operation, the slider 7 is connected to the slider 2 9 through the connecting rod 1 8 and the connecting rod 2 19, and when the core pulling body 6 is pulled out, the slider 7 moves to drive the connecting rod 1 8 and the connecting rod 2 19 to move, and when the connecting rod 2 19 moves, it drives the limit plate 21 to slide inside the inner groove 20. When the limit plate 21 slides inside the inner groove 20, the slider 7 moves to disengage from the extrusion of the extrusion component, and then the slider 2 9 is disengaged from the self-locking block 23 through the transmission component. After the slider 29 is locked, the slider 10 continues to move and is inserted into the inner groove 20 through the connecting rod 10, the connecting rod 11 and the limit plate 21 to slide the slider 29, and the slider 29 and the core-pulling body 6 are pulled out. At the same time, when the slider 29 and the core-pulling body 6 are driven to move through the fixed mold core again, the slider 10 moves to drive the connecting rod 10 and the connecting rod 11 to move, and the connecting rod 11 drives the limit plate 21 to move inside the inner groove 20, and when the limit plate 21 cannot move, it will drive the slider 29 to move. When the slider 29 moves, the slider 10 will drive the extrusion assembly to work, and make the self-locking block 23 ready through the transmission assembly, and when the slider 29 drives the core-pulling body 6 to move to the specified position, the self-locking block 23 corresponds to the self-locking hole 22, so that after the slider 29 moves to the specified position, the self-locking block 23 is inserted into the self-locking hole 22 to self-lock and limit the slider 29, so the self-locking and unlocking of the self-locking block 23 can be adapted through the connecting assembly.

[0032] The diameter of the limiting plate 21 is larger than the inner diameter of the through hole 18 ; when working, the limiting plate 21 will not penetrate the through hole 18 and detach from the inside of the slider 2 9 when sliding inside the inner groove 20 .

[0033] The extrusion assembly includes an extrusion block 17 slidably connected to the inside of the connecting tube 12, a fixing ring 15 is fixedly connected to the inside of the connecting tube 12, and a spring 16 is fixedly connected between the extrusion block 17 and the fixing ring 15; when working, the extrusion block 17 is extruded by moving the slider 7, and the extrusion block 17 slides inside the connecting tube 12 after being extruded, and then the extrusion block 17 slides to squeeze the spring 16, and the spring 16 has a rebound force after being extruded, and the rebound force of the spring 16 facilitates the resetting of the extrusion block 17 after the extrusion block 17 is separated from being extruded.

[0034] The extrusion block 17 is fixedly connected to the side opposite to the fixing ring 15 with an extrusion rod 14, one end of which passes through the fixing ring 15, and the extrusion rod 14 is slidably connected to the fixing ring 15; during operation, the movement of the extrusion block 17 is guided and limited by the sliding connection between the extrusion rod 14 and the fixing ring 15, and the movement of the extrusion block 17 is made more stable.

[0035] The transmission assembly includes a piston 13 slidably connected to the inside of the connecting pipe 12 and a piston 27 slidably connected to the inside of the connecting pipe 11, the piston 13 is fixedly connected to the extrusion rod 14, one side of the piston 27 is fixedly connected to a support rod 26, one end of the support rod 26 is fixedly connected to a connecting block 25, and a spring 24 is fixedly connected between the connecting block 25 and the self-locking block 23; when working, the extrusion block 17 is squeezed to drive the extrusion rod 14 to move, and the extrusion rod 14 moves to squeeze the piston 13 to make the piston 13 slide, and then the sliding of the piston 13 can squeeze the gas so that the gas squeezes the piston 27 through the ventilation pipe 10, and after the piston 27 is squeezed, it can drive the support rod 26 and the connecting block 25 to move, so that the extrusion After the pressing block 17 is squeezed, the connecting block 25 is moved through the transmission assembly, and similarly, when the squeezing rod 14 is disengaged from being squeezed and reset, the connecting block 25 can be reset through the transmission. At the same time, when the self-locking block 23 does not correspond to the self-locking hole 22, the movement of the connecting block 25 will squeeze the spring 24, so that the spring 24 has a rebound force, and when the self-locking block 23 corresponds to the self-locking hole 22, the rebound force of the spring 24 can drive the self-locking block 23 to move and plug into the self-locking hole 22 to plug and lock the slider 29, and prevent the slider 29 from retreating during injection molding and affecting the production quality of the mold. When the connecting block 25 is reset, the self-locking block 23 can be pulled to move by the spring 24, and the self-locking block 23 is moved out of the self-locking hole 22 to unlock the slider 29, and the slider 29 and the core pulling body 6 are moved and pulled out.

[0036] The front and rear ends of the right side of the slider 7 are both arranged in an arc shape, and the side of the extrusion block 17 that fits the slider 7 is arranged in an arc shape; when working, it is convenient for the slider 7 to extrude the extrusion block 17 when moving.

[0037] Embodiment 2: Figure 6 As shown, compared with Example 1, another implementation of the present invention is: the connecting pipe 11, the connecting pipe 2 12 and the ventilation pipe 10 are jointly arranged in a U-shape; when working, it is convenient for piston 13 and piston 27 to squeeze the gas when sliding, and it is convenient for the operation of the transmission component.

[0038] Working principle: when it is necessary to self-lock the slider 29, the oil cylinder 4 drives the slider 17 to move, and after the slider 17 moves, it drives the connecting rod 18, the connecting rod 219 and the limit plate 21 to slide inside the inner groove 20, and when the limit plate 21 moves to fit the inner wall of the inner groove 20, the limit plate 21 can no longer move, and then when the slider 17 moves again, the connecting rod 18, the connecting rod 219 and the limit plate 21 can drive the slider 29 to move, and after the slider 17 moves again, it squeezes the extrusion block 17, and the extrusion block 17 squeezes the spring 16 so that the spring 16 has a rebound force to facilitate the reset of the extrusion block 17, and then the extrusion block 17 drives the extrusion through the fixed ring 15 to The piston 13 is squeezed, and the piston 13 slides after being squeezed to squeeze the gas, and the gas squeezes the piston 27 through the vent pipe 10, and then the piston 27 is squeezed, which can drive the support rod 26 and the connecting block 25 to move, so that the squeezing block 17 can be squeezed and the connecting block 25 can be moved through the transmission assembly. Since the slider 29 has been blocking the connecting pipe 11 and the self-locking block 23 when it is not self-locked, the connecting block 25 can squeeze the spring 24 after it moves, so that the spring 24 has a rebound force, and then as the slider 29 continues to move, the self-locking hole 22 can be opened after the slider 29 and the core-pulling body 6 reach the specified position. Corresponding to the self-locking block 23, and when the self-locking block 23 corresponds to the self-locking hole 22, the self-locking block 23 is inserted into the self-locking hole 22 by the rebound force of the spring 24 to lock the slider 29, and prevent the slider 29 from retreating during injection molding and affecting the production quality of the mold. When the slider 29 and the core-pulling body 6 need to be pulled out, the slider 29 needs to be unlocked first, and then the slider 17 is driven by the cylinder 4 to move, and the movement of the slider 17 drives the connecting rod 18 and the connecting rod 219 to move, and when the connecting rod 219 moves, it drives the limit plate 21 to slide inside the inner groove 20. When the limit plate 21 slides inside the inner groove 20, the movement of the slider 17 will be out of the extrusion of the extrusion block 17, and the extrusion block 17 After being disengaged and squeezed, it is moved and reset by the rebound force of spring 16, and drives the squeezing rod 14 and piston 13 to slide and reset. Then, when piston 13 is reset, it can drive piston 27 to reset, so that piston 27 can move and drive the support rod 26 and connecting block 25 to reset, and through the reset of connecting block 25, spring 24 and self-locking block 23 are driven to move, and the self-locking block 23 is moved out from the self-locking hole 22, so that slider 29 is released from the locking of self-locking block 23, and then slider 17 continues to move through connecting rod 18 and connecting rod 2 19 and limit plate 21 inserted in the inner groove 20 to slide slider 29, and slider 29 and core pulling body 6 are pulled out.

[0039] The above-mentioned front, back, left, right, top and bottom are all based on the figures in the specification. Figure 1As a benchmark, according to the person's observation perspective, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0040] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the scope of protection of the present invention.

[0041] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A self-locking structure for a slide block of a plastic mold oil cylinder, comprising a base plate (1), a movable plate (2) being fixedly mounted on the top of the base plate (1), and a fixed plate (3) being arranged on the top of the movable plate (2); Features: A slide groove (5) is provided on the left side inside the fixed mold plate (3), and the left side inside the slide groove (5) extends to the outside of the fixed mold plate (3). A cylinder (4) is fixedly installed on the left side of the fixed mold plate (3), and the output end of the cylinder (4) is located inside the slide groove (5). The output end of the cylinder (4) is fixedly connected with a slider 1 (7). The slide groove (5) is slidably connected with a slider 2 (9), and a connecting component is provided between the slider 2 (9) and the slider 1 (7). The right side of the slider 2 (9) is fixedly connected with a core pulling body (6), and the right end of the core pulling body (6) passes through the fixed mold core; The front and rear surfaces of the slide groove (5) are connected to the connecting pipe 2 (12) and the connecting pipe 1 (11) on the left and right sides respectively; the connecting pipe 1 (11) and the connecting pipe 2 (12) are fixedly connected with the ventilation pipe (10); the connecting pipe 1 (11) is connected to the connecting pipe 2 (12) and the ventilation pipe (10); an extrusion assembly is arranged inside the connecting pipe 2 (12); a transmission assembly is arranged between the connecting pipe 1 (11) and the connecting pipe 2 (12) and the ventilation pipe (10); a self-locking block (23) is slidably connected inside the connecting pipe 1 (11); the self-locking block (23) is installed with the transmission assembly; the front and rear surfaces of the sliding block 2 (9) are both provided with self-locking holes (22); one side of the self-locking block (23) is inserted into the self-locking hole (22).

2. The self-locking structure of a plastic mold cylinder slider according to claim 1, characterized in that: The connecting assembly comprises an inner groove (20) provided inside the second slider (9), a limiting plate (21) being slidably connected inside the inner groove (20), a connecting rod (19) being fixedly connected on the left side of the limiting plate (21), a through hole (18) being provided on the left side inside the inner groove (20), the through hole (18) extending on the left side to the outside of the second slider (9), the connecting rod (19) passing through the through hole (18) on the left side, a connecting rod (8) being fixedly connected on the right side of the first slider (7), the connecting rod (8) being fixedly connected to the second connecting rod (19).

3. The self-locking structure of a plastic mold cylinder slider according to claim 2, characterized in that: The diameter of the limiting plate (21) is larger than the inner diameter of the through hole (18).

4. The self-locking structure of a plastic mold cylinder slider according to claim 3, characterized in that: The extrusion assembly comprises an extrusion block (17) slidably connected inside the second connecting pipe (12), a fixing ring (15) is fixedly connected inside the second connecting pipe (12), and a spring (16) is fixedly connected between the extrusion block (17) and the fixing ring (15).

5. The self-locking structure of a plastic mold cylinder slider according to claim 4, characterized in that: A squeezing rod (14) is fixedly connected to the side of the squeezing block (17) opposite to the fixing ring (15), one end of the squeezing rod (14) passes through the fixing ring (15), and the squeezing rod (14) is slidably connected to the fixing ring (15).

6. The self-locking structure of a plastic mold oil cylinder slider according to claim 5, characterized in that: The transmission assembly comprises a piston one (13) slidably connected inside a connecting tube two (12) and a piston two (27) slidably connected inside a connecting tube one (11); the piston one (13) is fixedly connected to an extrusion rod (14); one side of the piston two (27) is fixedly connected to a support rod (26); one end of the support rod (26) is fixedly connected to a connecting block (25); a spring two (24) is fixedly connected between the connecting block (25) and the self-locking block (23).

7. The self-locking structure of a plastic mold cylinder slider according to claim 6, characterized in that: The front and rear ends of the right side of the slider (7) are both arranged in an arc shape, and the side of the extrusion block (17) that is in contact with the slider (7) is arranged in an arc shape.

8. The self-locking structure of a plastic mold cylinder slider according to claim 7, characterized in that: The connecting pipe 1 (11), the connecting pipe 2 (12) and the ventilation pipe (10) are arranged together to form a U-shape.

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