Integrated secondary demolding mechanism in injection mold
By using an integrated secondary demolding mechanism, the coordinated action of guide rails and guide blocks enables automated demolding of injection molds, solving the problem of product jamming, improving demolding efficiency and accuracy, and simplifying the mold structure.
Patent Information
- Application Number
- CN202520058816.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-10
- Publication Date
- 2025-12-26
- Estimated Expiration
- 2035-01-10
AI Technical Summary
When demolding existing injection molds, the product is prone to getting stuck on the core, requiring manual intervention. In addition, the additional secondary ejection mechanism complicates the mold and causes fitting problems.
An integrated secondary demolding mechanism was designed, which combines two demolding actions into one. Through the cooperation of guide rails and guide blocks, the guide rail fixing plate is driven by a hydraulic cylinder to achieve the coordinated action of the upper and lower top plates, thus completing the primary and secondary demolding.
It improves demolding efficiency and precision, simplifies mold structure, avoids manual intervention and coordination issues, and ensures efficient and automated demolding.
Smart Images
Figure CN223720084U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of mould, especially in injection mould one -piece secondary demoulding mechanism. BACKGROUND
[0002] In the process of producing the plastic product with the convex ring or the rim such as the cover by the injection mould, when the demoulding plate demoulds the product completed by the injection, the product is easy to be stuck on the core and cannot automatically drop, which needs the manual operation to take down, not only wastes the time, but also exists the danger, and the product is easy to be damaged when taking out manually. In order to improve the automatic demoulding effect of the injection mould, generally, a secondary ejection mechanism is added in the injection mould, when the demoulding plate in the injection mould demoulds the product, the product stuck on the core is pushed out by the secondary ejection mechanism, so that the product automatically drops. UTILITARY MODEL CONTENTS
[0003] The utility model aims at providing one -piece secondary demoulding mechanism in injection mould which can integrate twice demoulding actions together and will not have the cooperation problem.
[0004] In order to achieve the above-mentioned purpose, the utility model adopts the technical scheme of one -piece secondary demoulding mechanism in injection mould, which comprises: upper top plate, lower top plate and guide rail fixed plate, two guide rail fixed plates are arranged in parallel, two guide rail fixed plates are connected with movable plate, movable plate is connected with driver, two guide rail groups are arranged on each guide rail fixed plate, first guide rail and second guide rail are arranged in parallel in a guide rail group, the top wall of first guide rail is inclined top wall which inclines from front to back and from bottom to top, inclined guide surface which inclines from bottom to top is arranged between the flat top wall and the front side wall of second guide rail, four guide columns are arranged downwards around the upper top plate, four guide columns surround the outside of lower top plate, four guide columns are matched with four second guide rails respectively, wedge surface matched with the inclined guide surface on the second guide rail is arranged on the bottom wall of guide column, a plurality of core holes are arranged on the upper top plate, two guide blocks are arranged on the left and right side walls of lower top plate respectively, four guide blocks are matched with four first guide rails respectively, wedge surface matched with the inclined top wall is arranged on the bottom wall of guide block, a plurality of sliding holes are arranged on the lower top plate.
[0005] Further, the one -piece secondary demoulding mechanism in injection mould, wherein, anti -skid line is arranged on the inclined top wall of first guide rail, anti -skid line is also arranged on the flat top wall and inclined guide surface of second guide rail.
[0006] Further, the integrated secondary demolding mechanism of the injection mold, wherein the connecting structure between the first guide rail and the second guide rail in the guide rail set and the guide rail fixing plate is that a mounting groove is formed on the guide rail fixing plate, the first guide rail and the second guide rail are clamped in the same mounting groove and connected through bolts, and the slope of the inclined top wall of the first guide rail is the same as the slope of the inclined guide surface of the second guide rail.
[0007] Further, the integrated secondary demolding mechanism of the injection mold, wherein the connecting structure between the guide block and the lower top plate is that two clamping grooves are formed on the left and right side walls of the lower top plate, one of the clamping grooves is flush with the rear end wall of the lower top plate, one first guide rail on the guide rail fixing plate is clamped in the clamping groove and extends rearward beyond the lower top plate, the other clamping groove is left with a limiting groove between the same side wall, the other first guide rail on the guide rail fixing plate is clamped in the clamping groove and the limiting groove, a fixing groove is formed on the top wall of the clamping groove, and the guide block is clamped in the fixing groove and connected through bolts.
[0008] Further, the integrated secondary demolding mechanism of the injection mold, wherein the drive is an oil cylinder, the oil cylinder is fixed on the fixing plate, a piston rod on the oil cylinder is connected with the movable plate after penetrating through the fixing plate, a plurality of guide shafts are arranged on the fixing plate, and a plurality of guide holes are arranged on the movable plate and movably sleeved on the guide shafts.
[0009] The injection mold has the advantages that the structure is simple, high coordination and high efficiency between the upper top plate and the lower top plate are ensured, the twice demolding efficiency and precision are improved, the first demolding is completed by simultaneously driving the upper top plate and the lower top plate to be lifted up through the first guide rail and the second guide rail when the guide rail fixing plate moves forward, the upper top plate is not lifted up any more after being lifted up to a certain height, the lower top plate continues to be lifted up, the second demolding is completed in the lifting process of the lower top plate, and the twice demolding is completed by driving the guide rail fixing plate to move forward. BRIEF DESCRIPTION OF DRAWINGS
[0010] Figure 1 is a structural schematic view of the integrated secondary demolding mechanism of the injection mold.
[0011] Figure 2 is Figure 1 is a structural schematic view of the injection mold without the upper top plate and the guide column.
[0012] Figure 3 is Figure 2 is a connecting structure schematic view between the guide rail fixing plate and the first guide rail and the second guide rail in the injection mold.
[0013] Figure 4 is Figure 2 is a structural schematic view of the lower top plate in the injection mold.
[0014] Figure 5It is the structure schematic view that the integrated secondary demolding mechanism in the injection mold is connected with the injection mold.
[0015] Figure 6 It is the structure schematic view that the integrated secondary demolding mechanism in the injection mold is connected with the injection mold. Figure 5
[0016] It is the structure schematic view that the integrated secondary demolding mechanism in the injection mold is connected with the injection mold. Figure 7 Figure 6 It is the structure schematic view that the integrated secondary demolding mechanism in the injection mold is connected with the injection mold.
[0017] The technical scheme of the utility model is further described below in combination with the drawings and preferred embodiments.
[0018] As shown in the utility model discloses an integrated secondary demolding mechanism in injection mold, include: upper top plate 1, lower top plate 2 and guide rail fixed plate 3, two guide rail fixed plate 3 parallelly arranged, two guide rail fixed plate 3 are connected with movable plate 31, movable plate 31 is connected with driver, the driver is oil cylinder 4, oil cylinder 4 is fixed on fixed plate 41, the piston rod on oil cylinder 4 is connected with movable plate 31 after passing through fixed plate 41, be provided with a plurality of guide shaft 42 on fixed plate 41, be provided with a plurality of guide hole on movable plate 31, guide hole is movably sleeved on guide shaft 42, be provided with two guide rail groups on each guide rail fixed plate 3, and first guide rail 32 and second guide rail 33 are arranged in parallel in a guide rail group, and the connecting structure between first guide rail 32 and second guide rail 33 and guide rail fixed plate 3 in guide rail group is: installation slot is set up on guide rail fixed plate 3, and first guide rail 32 and second guide rail 33 are all clamped in same installation slot and are connected by bolt, and the top wall of first guide rail 32 is inclined top wall from front to back, from bottom to top, and the inclined guide surface from bottom to top is set up between the flat top wall and side wall of second guide rail 33, and the inclination of the top wall of first guide rail 32 is same with the inclination of the inclined guide surface of second guide rail 33, and anti-skid line is set up on the top wall of first guide rail 32, and anti-skid line is also set up on the flat top wall and inclined guide surface of second guide rail 33. Figures 1-4
[0019] Four guide columns 11 are arranged downwardly around the upper top plate 1, the four guide columns 11 are surrounded outside the lower top plate 2, the four guide columns 11 are matched with the four second guide rails 33 respectively, a wedge surface matched with the inclined guide surface on the second guide rail 33 is arranged on the bottom wall of the guide column 11, two guide blocks 21 are arranged on the left and right side walls of the lower top plate 2 respectively, four wedge surfaces matched with the inclined top wall on the first guide rail 32 are arranged on the bottom wall of the guide block 21, the connecting structure between the guide block 21 and the lower top plate 2 is that two clamping grooves 22 are arranged on the left and right side walls of the lower top plate 2 respectively, one clamping groove 22 is flush with the rear end wall of the lower top plate 2, one first guide rail 32 on the guide rail fixing plate 3 is movably clamped in the clamping groove 22 and extends rearward beyond the lower top plate 2, the other clamping groove 22 and the same side wall leave a limiting groove 23, the other first guide rail 32 on the guide rail fixing plate 3 is movably clamped in the clamping groove 22 and the limiting groove 23, a fixing groove 24 is arranged on the top wall of the clamping groove 22, the guide block 21 is clamped in the fixing groove 24 and is connected through bolts.
[0020] The oil cylinder 4 drives the movable plate 31 to drive the two guide rail fixing plates 3 to move synchronously forward and backward, when the guide rail fixing plate 3 moves forward, the guide block 21 moves upward along the inclined top wall of the first guide rail 32 all the time, thereby driving the lower top plate 2 to move upward all the time, the guide column 11 moves upward along the inclined guide surface of the second guide rail 33 to the flat top wall and then slides in parallel, thereby driving the upper top plate 1 to rise by a height and then not to rise any more, after the upper top plate 1 and the lower top plate 2 rise synchronously by a height, the upper top plate 1 does not rise any more, but the lower top plate 2 continues to rise, when the guide rail fixing plate 3 moves backward, the guide block 21 moves downward along the inclined top wall of the first guide rail 32 all the time, thereby driving the lower top plate 2 to move downward all the time, the guide column 11 slides in parallel along the flat top wall of the second guide rail 33 to the inclined guide surface and then moves downward, thereby driving the upper top plate 1 to be stationary first and then to descend, when the first guide rail 32 abuts against the groove wall of the limiting groove 23, the upper top plate 1 and the lower top plate 2 descend to the position, and the guide rail fixing plate 3 cannot move backward any more.
[0021] As Figure 5As shown, the integral secondary demolding mechanism in the injection mold is installed in the injection mold, and the installation structure is as follows: two guide rail fixed plates 3 are slidingly clamped in the lower mold base 5, a plurality of connecting columns 51 are vertically arranged in the lower mold base 5, a plurality of sliding holes are arranged on the lower top plate 2, the lower top plate 2 is slidingly clamped on the connecting columns 51 through the sliding holes and abuts against the lower mold base 5, a core support plate 52 is fixedly connected on the connecting columns 51, a sliding hole slidingly matched with the guide column 11 is arranged on the core support plate 52, a core 53 is arranged on the core support plate 52, a top shaft 56 is arranged on the lower top plate 2, the top shaft 56 sequentially passes through the core support plate 52 and the core 53, a core hole avoiding the core 53 is arranged on the upper top plate 1, the upper surface of the upper top plate 1 is flush with the upper surface of the core support plate 52, a demolding plate 54 is arranged on the core support plate 52 and the upper top plate 1, and an upper mold 55 is movably arranged on the demolding plate 54; in the mold closing state, a molding cavity is formed between the demolding plate 54, the core 53 and the upper mold 55. Figure 6 As shown, the oil cylinder 4 continues to drive the guide rail fixed plate 3 to slide forward, the guide column 11 slides horizontally on the flat top wall of the second guide rail 33, the upper top plate 1 and the demolding plate 54 will not rise again, and the guide block 21 moves upward under the guidance of the inclined top wall of the first guide rail 32, thereby driving the lower top plate 2 to continue to rise, the lower top plate 2 pushes the top shaft 56 upward, and the top shaft 56 pushes the product clamped in the demolding plate 54 out to complete secondary demolding, as shown in Figure 7 As shown, the structure of the injection mold in the embodiment is a common structure in the field, the core hole avoiding the core 53 is arranged on the upper top plate 1, and the sliding hole and the top shaft 56 are arranged in the lower top plate 2, which are conventional arrangements in the field; the number of core holes arranged on the upper top plate 1 needs to be arranged according to the actual number of cores 53, and the number of top shafts 56 arranged on the lower top plate 2 needs to be arranged according to the actual number of connecting columns 51 between the lower mold base 5 and the core support plate 52.
[0022] It should be explained finally: the above examples are only used to illustrate the technical scheme of the utility model and not to limit it, although the utility model has been explained in detail with reference to the above examples, the ordinary skilled in the art should understand that: the specific implementation of the utility model can still be modified or replaced, and any modification or equivalent replacement without departing from the spirit and scope of the utility model should be covered in the protection scope of the claims of the utility model.
Claims
1. An integrated secondary ejection mechanism in an injection mold characterized by: The utility model relates to a movable plate and drive device, including: The upper top plate, the lower top plate and the guide rail fixed plate, two guide rail fixed plates are parallelly arranged, two guide rail fixed plates are connected with the movable plate, the movable plate is connected with the driver, two guide rail groups are arranged on each guide rail fixed plate, the first guide rail and the second guide rail are arranged side by side in a guide rail group, the top wall of the first guide rail is the inclined top wall that inclines from front to back and from bottom to top, the inclined guide surface that inclines from bottom to top is arranged between the flat top wall of the second guide rail and the front side wall, four guide columns are arranged downwards around the upper top plate, four guide columns are surrounded on the outside of the lower top plate, four guide columns are matched with four second guide rails respectively, the wedge surface matched with the inclined guide surface on the second guide rail is arranged on the bottom wall of the guide column, a plurality of core holes are arranged on the upper top plate, two guide blocks are arranged on the left and right side walls of the lower top plate, four guide blocks are matched with four first guide rails respectively, the wedge surface matched with the inclined top wall is arranged on the bottom wall of the guide block, a plurality of sliding holes are arranged on the lower top plate.
2. The integral secondary ejection mechanism in an injection mold of claim 1, wherein: Anti-skid lines are arranged on the inclined top wall of the first guide rail, and anti-skid lines are also arranged on the flat top wall and the inclined guide surface of the second guide rail.
3. The integral secondary ejection mechanism in an injection mold of claim 1, wherein: The connecting structure between the first guide rail and the second guide rail in the guide rail group and the guide rail fixed plate is that the mounting groove is formed on the guide rail fixed plate, the first guide rail and the second guide rail are clamped in the same mounting groove and are connected through bolts, and the inclination of the inclined top wall of the first guide rail is same with the inclination of the inclined guide surface of the second guide rail.
4. The integral secondary ejection mechanism in an injection mold of claim 1, wherein: The connecting structure between the guide block and the lower top plate is that two clamping grooves are formed on the left and right side walls of the lower top plate, one clamping groove is flush with the rear end wall of the lower top plate, one first guide rail on the guide rail fixed plate is clamped in the clamping groove and extends rearward beyond the lower top plate, the other clamping groove is left with a limiting groove between the same side wall, the other first guide rail on the guide rail fixed plate is clamped in the clamping groove and the limiting groove, the fixing groove is formed on the top wall of the clamping groove, and the guide block is clamped in the fixing groove and is connected through bolts.
5. The integral secondary ejection mechanism in an injection mold of claim 1, wherein: The driver is an oil cylinder, the oil cylinder is fixed on the fixed plate, the piston rod on the oil cylinder passes through the fixed plate and is connected with the movable plate, a plurality of guide shafts are arranged on the fixed plate, and a plurality of guide holes are arranged on the movable plate, and the guide hole is movably sleeved on the guide shaft.