A rapid locking structure of an injection mold frame

Abstract

The utility model provides a kind of injection mold frame quick locking structure, it is related to mechanical engineering technical field, including workbench;Locking device is set in the top of workbench.The utility model is through the setting of locking device, through the cooperation of oil pump, sleeve, baffle, first push rod, reset spring and trapezoidal lock pin, start oil pump and promote trapezoidal lock pin, make trapezoidal lock pin quickly card into the trapezoidal lock hole of injection mold frame shell, utilize trapezoidal structure "inclined plane self-locking" characteristics, lock pin and lock hole inclined plane fit produce transverse pre-tightening force, firmly fixed with mold frame shell, effectively resist axial and lateral load when injection molding, significantly improve the fixing speed, the setting of reset spring simultaneously, when oil pump pressure relief, reset spring releases elastic potential energy, drives baffle, first push rod and lock pin reverse movement reset, avoid artificial disassembly cumbersome, substantially shorten the interval of die change, further improve the practicality of injection mold frame locking structure.

Description

Technical Field

[0001] This utility model relates to the field of mechanical engineering technology, specifically to a quick-locking structure for injection mold frames. Background Technology

[0002] A quick-locking structure for injection mold base is a key device used to connect the mold and the injection molding machine in injection molding production. It is mainly used in the mold changing process. During the plastic molding process, different specifications and types of plastic parts need to be matched with corresponding molds, and the molds are connected to the injection molding machine worktable or moving / fixed templates through the mold base. Traditional mold frame locking devices mainly consist of bolts and pressure plates, which are cumbersome to operate. Each bolt needs to be tightened or loosened manually, which relies on the operator's experience and is prone to uneven tightening, leading to unbalanced stress on the mold frame and even mold deformation. This increases the time required to fix the mold frame and reduces the practicality of the injection mold frame locking structure.

[0003] To address this issue, we propose a quick-locking structure for injection mold holders. Utility Model Content

[0004] This invention provides a quick-locking structure for injection mold frames, which solves the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows: An embodiment of this utility model provides a quick-locking structure for an injection mold frame, including: a worktable; Threaded holes are provided at the four corners of one side of the workbench for connecting and fixing external equipment. A locking device is installed at the top of the workbench. The locking device includes an oil pump fixed at the top of the workbench, a first oil distribution pipe fixedly connected to the output end of the oil pump, two first oil pipes fixedly connected to the two ends of the first oil distribution pipe, four sleeves fixedly connected to the surface of one side of the workbench, a first push rod slidably connected inside the sleeve, and a trapezoidal locking pin fixedly connected to one end of the first push rod. The injection mold frame housing is set on one side of the workbench. The two sides of the injection mold frame housing are provided with trapezoidal locking holes corresponding to the first push rod. One end of the injection mold frame housing is fixedly connected to a positioning post, and one end of the injection mold frame housing is fixedly connected to a positioning pin. Three first horn holes are provided on one side of the worktable, and a second horn hole is provided on one side of the worktable for positioning the injection mold frame shell.

[0006] The above technical solution allows for the rapid initial alignment and fixation of the injection mold frame shell through the coordinated use of the positioning column, positioning pin, first horn hole, and second horn hole, while the locking device further locks and fixes the injection mold frame shell.

[0007] Furthermore, the other ends of the two first oil pipes are respectively fixedly connected to second branch oil pipes, the two side outlets of the two second branch oil pipes are respectively fixedly connected to second oil pipes, and the other ends of the four second oil pipes are respectively connected to sleeves, the bottom end of the sleeves being fixedly connected to the workbench by fixing bolts.

[0008] Through the above technical solution, the setting of the second oil pipe can enable multiple trapezoidal locking pins to simultaneously clamp and fix the injection mold frame shell, avoiding the displacement of the injection mold frame shell from affecting subsequent work.

[0009] Furthermore, a baffle is fixedly connected to the other end of the first push rod, and a sealing ring is provided on the outer arc surface of the baffle, and the sealing ring is adapted to the inside of the sleeve.

[0010] The above technical solution, namely the setting of the sealing ring, can prevent hydraulic oil leakage from affecting the use of the device.

[0011] Furthermore, a return spring is provided on the outer circular surface of the first push rod, and the two ends of the return spring are respectively fixedly connected to one side of the sleeve and the baffle.

[0012] The above technical solution allows the tension of the reset spring to push the baffle to reset.

[0013] Furthermore, a through hole is provided in the middle of the worktable, and a groove is provided in the middle of one side of the worktable. A push plate is slidably connected inside the groove. A through hole adapted to the worktable is provided in the middle of the push plate, and multiple springs c are fixedly connected between the push plate and the worktable.

[0014] Through the above technical solution, the tension of spring c can push the push plate to move outward, thereby ejecting the injection mold frame shell.

[0015] Furthermore, a groove is provided on one side of the positioning pin, and a retaining pin is slidably connected inside the groove. A spring A is fixedly connected between the retaining pin and the positioning pin.

[0016] Through the above technical solution, the setting of spring A can push the locking pin to slide outward and lock into the interior for fixation.

[0017] Furthermore, a slot is provided on one side of the interior of the second horn hole. The slot is adapted to a locking pin. A second push rod is slidably connected inside the slot. A button is slidably connected to the bottom end of the second push rod. The button is slidably connected to one side of the worktable, and a spring B is fixedly connected between the button and the worktable.

[0018] The above technical solution allows the second push rod to be set so that the button can push the second push rod to push out the locking pin.

[0019] The above-described solution of this utility model has at least the following beneficial effects: 1. This utility model, through the setting of a locking device, uses the cooperation of an oil pump, sleeve, baffle, first push rod, return spring and trapezoidal locking pin. The oil pump is started to push the trapezoidal locking pin, so that the trapezoidal locking pin is quickly locked into the trapezoidal locking hole of the injection mold frame shell. Utilizing the "sloping self-locking" characteristic of the trapezoidal structure, the locking pin and the inclined surface of the locking hole are in contact to generate a lateral pre-tightening force, which firmly fixes the mold frame shell, effectively resisting the axial and lateral loads during injection molding, and significantly improving the fixing speed. At the same time, the setting of the return spring, when the oil pump is depressurized, the return spring releases elastic potential energy, driving the baffle, first push rod and locking pin to move in the opposite direction to reset, avoiding the tedious manual disassembly, greatly shortening the mold change interval, and further improving the practicality of the injection mold frame locking structure.

[0020] 2. This utility model utilizes the combined use of a positioning pin, a retaining pin, spring A, a second flared hole, a button, a second push rod, a push plate, and spring C. By inserting the positioning pin into the second flared hole, the retaining pin automatically springs into the slot within the hole under the elastic force of spring A, achieving rapid positioning and locking of the mold frame and preventing offset and shaking during the pre-locking stage. Simultaneously, the push plate automatically pushes the mold frame housing outward under the elastic force of spring C, assisting the positioning pin in smoothly exiting the second flared hole. Mold frame separation can be completed without manual dragging, significantly shortening the positioning correction and mold removal time, and further improving the performance of the injection mold. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a utility model Figure 1 A schematic diagram of the disassembled structure; Figure 3 This is a schematic diagram of the ejection device structure of this utility model; Figure 4 This is a schematic diagram of the positioning post and the first horn hole of this utility model; Figure 5 This is a utility model Figure 2 A magnified structural diagram at point A; Figure 6 This is a utility model Figure 4 A magnified structural diagram at point B.

[0022] Explanation of reference numerals in the attached figures: 1. Workbench; 2. Threaded hole; 3. Locking device; 31. Oil pump; 32. First oil distribution pipe; 33. First oil pipe; 34. Second oil distribution pipe; 35. Second oil pipe; 36. Sleeve; 37. Fixing bolt; 38. First push rod; 39. Baffle; 310. Return spring; 311. Trapezoidal locking pin; 4. Injection mold frame housing; 41. Trapezoidal locking hole; 42. Positioning pin; 43. Positioning post; 44. Locking pin; 45. Spring A; 5. First flared hole; 51. Second flared hole; 6. Button; 61. Spring B; 62. Second push rod; 7. Push plate; 71. Spring C. Detailed Implementation

[0023] Exemplary embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this invention will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

[0024] like Figures 1 to 6As shown, an embodiment of this utility model provides a quick-locking structure for an injection mold frame, including: a workbench 1; threaded holes 2 are provided at the four corners of one side of the workbench 1 for connecting and fixing external equipment; a locking device 3, which is provided at the top of the workbench 1. The locking device 3 includes an oil pump 31 fixed to the top of the workbench 1, a first oil distribution pipe 32 fixedly connected to the output end of the oil pump 31, two first oil pipes 33 fixedly connected to the two ends of the first oil distribution pipe 32, a first push rod 38 slidably connected to the inside of the sleeves 36 and a trapezoidal locking pin 311 fixedly connected to one end of the first push rod 38, an injection mold frame housing 4 provided on one side of the workbench 1, trapezoidal locking holes 41 corresponding to the first push rod 38 being provided on both sides of the injection mold frame housing 4, a positioning post 43 fixedly connected to one end of the injection mold frame housing 4, and a positioning pin 42 fixedly connected to one end of the injection mold frame housing 4. Three first horn holes 5 are provided on one side of the worktable 1, and a second horn hole 51 is provided on one side of the worktable 1 for positioning the injection mold frame shell 4. A groove is provided on one side of the positioning pin 42, and a locking pin 44 is slidably connected inside the groove. A spring A45 is fixedly connected between the locking pin 44 and the positioning pin 42. A slot is provided on one side of the second horn hole 51, which is adapted to the locking pin 44. A second push rod 62 is slidably connected inside the slot. A button 6 is slidably connected to the bottom end of the second push rod 62. The button 6 is slidably connected to one side of the worktable 1, and a spring B61 ​​is fixedly connected between the button 6 and the worktable 1. The button 6 is connected to the worktable 1 by sliding connection. When the operator presses the button 6, the button 6 can slide into the worktable 1. The second push rod 62 slides outward under the action of the button 6, thereby pushing the locking pin 44 to retract, so that the injection mold frame shell 4 can be taken out. At the same time, the button 6 can be reset under the action of the spring B61.

[0025] like Figures 2 to 5As shown, the other ends of the two first oil pipes 33 are respectively fixedly connected to second branch oil pipes 34, and the two branch outlets on both sides of the two second branch oil pipes 34 are respectively fixedly connected to second oil pipes 35. The other ends of the four second oil pipes 35 are respectively connected to sleeves 36. The bottom end of the sleeves 36 is fixedly connected to the worktable 1 by a fixing bolt 37. The other end of the first push rod 38 is fixedly connected to a baffle 39. A sealing ring is provided on the outer arc surface of the baffle 39, and the sealing ring is adapted to the inside of the sleeve 36. A return spring is provided on the outer arc surface of the first push rod 38. 310, and the two ends of the return spring 310 are respectively fixedly connected to one side of the sleeve 36 and the baffle 39. The first push rod 38 is connected to the baffle 39 by a fixed connection. When the oil pump 31 starts, the hydraulic oil is delivered to the inside of the sleeve 36 by the action of the first oil distribution pipe 32, the first oil pipe 33, the second oil distribution pipe 34 and the sleeve 36. The baffle 39 slides under the action of the oil pump 31, thereby driving the first push rod 38 to slide. At this time, the trapezoidal locking pin 311 is inserted into the trapezoidal locking hole 41 to clamp and fix the injection mold frame shell 4.

[0026] like Figures 2 to 3 As shown, a through hole is provided in the middle of the worktable 1, and a groove is provided in the middle of one side of the worktable 1. A push plate 7 is slidably connected inside the groove. A through hole adapted to the worktable 1 is provided in the middle of the push plate 7, and multiple springs c71 are fixedly connected between the push plate 7 and the worktable 1. The push plate 7 is connected to the springs c71 by a fixed connection. When the operator presses the button 6 to push the locking pin 44 to retract, the push plate 7 pushes the injection mold frame shell 4 to move outward under the action of the springs c71, so that the positioning pin 42 and the positioning post 43 slide out of the first horn hole 5 and the second horn hole 51.

[0027] In this embodiment of the utility model (working principle), during use, the workbench 1 is first securely connected to the external equipment by passing high-strength bolts through the threaded hole 2 to ensure the stability of the overall installation reference. Then, the injection mold frame shell 4 is hoisted to one side of the workbench 1 by a crane or AGV. Through the flaring guidance of the first flared hole 5 and the second flared hole 51, the positioning pin 43 and the positioning pin 42 are quickly aligned and inserted into the hole. At this time, the locking pin 44 inside the positioning pin 42 slides outward under the elastic force of the spring A45 and is locked into the internal groove of the second flared hole 51, realizing the initial rapid positioning and fixing of the injection mold frame shell 4. This process does not require precise alignment, and the flared hole design can automatically correct minor deviations. The movement significantly reduces the difficulty of manual alignment. Then, the oil pump 31 is started via an external controller. Hydraulic oil is diverted through the first branch pipe 32 and then through the first oil pipe 33 into the second branch pipe 34. From there, it is precisely delivered to the four sleeves 36 via the second oil pipes 35 at both ends of the second branch pipe 34. The hydraulic oil pushes the baffle 39 to slide outwards (the sealing ring on the outside of the baffle effectively prevents hydraulic oil leakage and ensures stable system pressure). Then, the first push rod 38 drives the trapezoidal locking pin 311 to extend synchronously and engage with the trapezoidal locking hole 41 of the injection mold frame housing 4. Utilizing the lateral constraint characteristics of the trapezoidal structure, the mold frame housing is firmly locked, effectively resisting the impact force and lateral force during injection molding and preventing mold frame movement. If occasional wobbling or deviation occurs, ensure the processing accuracy of the plastic part. After locking, the external injection molding machine can perform injection molding through the through hole in the middle of the worktable 1. When it is necessary to replace the injection mold frame shell 4, first use a crane or AGV to securely hoist the mold frame shell, then control the oil pump 31 to collect oil. The baffle 39 slides inward under the elastic force of the return spring 310, and the first push rod 38 drives the trapezoidal locking pin 311 to disengage from the trapezoidal locking hole 41, releasing the locking state. At this time, the operator presses the button 6, and the second push rod 62 slides outward under the button drive and pushes the locking pin 44 to compress the spring A45, so that the locking pin slides out of the groove of the second horn hole 51. At the same time, the push plate 7 in the middle of the worktable 1 is in the spring Under the elastic force of C71, the injection mold base shell 4 is automatically pushed outward, and the auxiliary positioning column 43 and positioning pin 42 smoothly slide out of the first horn hole 5 and the second horn hole 51, realizing the quick removal of the mold base. The entire replacement process does not require manual dragging, greatly reducing labor intensity. When installing a new mold base, the above operation can be repeated. This structure, through the collaborative design of "hydraulic drive + mechanical positioning + elastic assistance", not only shortens the time of a single mold change, but also ensures the processing stability through multiple positioning and locking mechanisms. At the same time, the automated drive and auxiliary mechanism reduce manual intervention, making it suitable for high-frequency mold change scenarios in small-batch, multi-variety production, significantly improving the flexibility and efficiency of injection molding production.

[0028] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A quick-locking structure for an injection mold base, characterized in that, include: Workbench (1); Threaded holes (2) are provided at the four corners of one side of the workbench (1) for connecting and fixing external equipment; The locking device (3) is set at the top of the workbench (1). The locking device (3) includes an oil pump (31) fixed at the top of the workbench (1), a first oil distribution pipe (32) fixedly connected to the output end of the oil pump (31), two first oil pipes (33) fixedly connected to the two ends of the first oil distribution pipe (32), four sleeves (36) fixedly connected to the surface of one side of the workbench (1), a first push rod (38) slidably connected inside the sleeve (36), and a trapezoidal locking pin (311) fixedly connected to one end of the first push rod (38). The injection mold frame housing (4) is set on one side of the workbench (1). The two sides of the injection mold frame housing (4) are provided with trapezoidal lock holes (41) corresponding to the first push rod (38). One end of the injection mold frame housing (4) is fixedly connected to a positioning post (43), and one end of the injection mold frame housing (4) is fixedly connected to a positioning pin (42). Three first horn holes (5) are provided on one side of the workbench (1), and a second horn hole (51) is provided on one side of the workbench (1) for positioning the injection mold frame shell (4).

2. The quick-locking structure for an injection mold base according to claim 1, characterized in that, The other ends of the two first oil pipes (33) are respectively fixedly connected to the second branch oil pipes (34), and the two branch outlets on both sides of the two second branch oil pipes (34) are respectively fixedly connected to the second oil pipes (35). The other ends of the four second oil pipes (35) are respectively connected to the casing (36). The bottom end of the casing (36) is fixedly connected to the workbench (1) by the fixing bolt (37).

3. The quick-locking structure for an injection mold base according to claim 1, characterized in that, The other end of the first push rod (38) is fixedly connected to a baffle (39), and a sealing ring is provided on the outer arc surface of the baffle (39), and the sealing ring is adapted to the inside of the sleeve (36).

4. The quick-locking structure for an injection mold base according to claim 3, characterized in that, The outer circular surface of the first push rod (38) is provided with a return spring (310), and the two ends of the return spring (310) are respectively fixedly connected to one side of the sleeve (36) and the baffle (39).

5. The quick-locking structure for an injection mold base according to claim 1, characterized in that, The workbench (1) has a through hole in the middle and a groove in the middle of one side of the workbench (1). A push plate (7) is slidably connected inside the groove. The push plate (7) has a through hole in the middle that is compatible with the workbench (1). Multiple springs c (71) are fixedly connected between the push plate (7) and the workbench (1).

6. The quick-locking structure for an injection mold base according to claim 1, characterized in that, A groove is provided on one side of the positioning pin (42), and a locking pin (44) is slidably connected inside the groove. A spring A (45) is fixedly connected between the locking pin (44) and the positioning pin (42).

7. The quick-locking structure for an injection mold base according to claim 1, characterized in that, A slot is provided on one side of the interior of the second horn hole (51). The slot is adapted to the locking pin (44). A second push rod (62) is slidably connected inside the slot. A button (6) is slidably connected to the bottom end of the second push rod (62). The button (6) is slidably connected to one side of the workbench (1). A spring B (61) is fixedly connected between the button (6) and the workbench (1).

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