A high-efficiency and energy-saving plastic injection mold

Abstract

The present invention discloses an energy-efficient plastic injection mold, including a base, a lower template is fitted on the base, an upper template matching the lower template is correspondingly provided on the lower template, two lower templates are symmetrically provided, sliding grooves are symmetrically embedded on both sides of the base, a slide plate is slidably provided in the sliding groove, the slide plate is located below the lower template and is fitted with the lower template, a mold cavity is symmetrically embedded on one side of the two lower templates that are relatively close, an injection hole connected to the mold cavity is provided through the base, the slide plate and the relatively distant sides of the two lower templates are rotatably connected by a rotating hinge, and a driving component for driving the two slide plates to move relative to each other is embedded on the base. In the present invention, the driving component drives the two slide plates to move relatively away so that the two lower templates are relatively separated, and the injection molded parts are automatically dropped, which improves the demoulding efficiency and reduces the risk of defects that may exist when the injection molded parts are demoulded.

Description

Technical Field

[0001] The invention relates to the technical field of plastic injection molds, in particular to a high-efficiency and energy-saving plastic injection mold. Background Art

[0002] Plastic mold is the abbreviation of a combined mold used for compression molding, extrusion molding, injection molding, blow molding and low-foaming molding. The coordinated changes of the mold convex and concave molds and the auxiliary molding system can process a series of plastic parts of different shapes and sizes.

[0003] Chinese patent publication number: CN118372428A, discloses a multi-color silicone processing and molding mold, including a mold cover plate arranged on the upper side of the mold bottom plate, and also includes two groups of first side mold plates and two groups of second side mold plates. The lower surfaces of the two groups of first side mold plates are fixedly connected with first connecting blocks, the lower sides of the two groups of first connecting blocks are fixedly connected with first extension rods, and the lower surfaces of the two groups of second side mold plates are fixedly connected with second connecting blocks.

[0004] When this solution is used, during demoulding, the edges of the injection molded parts will inevitably produce some burrs or extensions, so they will adhere to the mold cavity, making demoulding inconvenient when opening the mold. Summary of the invention

[0005] The object of the present invention is to provide a high-efficiency and energy-saving plastic injection mold to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A highly efficient and energy-saving plastic injection mold comprises a base, a lower template is fitted on the base, an upper template matching the lower template is correspondingly provided on the lower template, two lower templates are symmetrically provided, sliding grooves are symmetrically embedded on both sides of the base, a slide plate is slidably provided in the sliding groove, the slide plate is located below the lower template and is fitted with the lower template, a mold cavity is symmetrically embedded on the relatively close sides of the two lower templates, an injection hole connected to the mold cavity is through-set on the base, the slide plate and the relatively distant sides of the two lower templates are rotatably connected by a rotating hinge, and a driving component for driving the two slide plates to move relative to each other is embedded in the base.

[0008] As a further solution of the present invention: a pressing block is fixedly connected to a side of the upper mold plate facing the lower mold plate, and the pressing block and the upper end of the cavity formed by the two mold cavities are adapted.

[0009] As a further solution of the present invention: a sleeve is fixedly connected to the upper end of the base, a sleeve rod is slidably provided in the sleeve, and the end of the sleeve rod away from the sleeve is assembled and fixed to the lower side of the edge of the upper template.

[0010] As a further solution of the present invention: the driving assembly includes a driving rod rotatably connected in the sliding groove and a guide rod fixedly arranged in the sliding groove, the extending directions of the guide rod and the driving rod are consistent with the sliding direction of the slide plate relative to the sliding groove, the slide plate and the driving rod are connected by threaded fitting, and the slide plate and the guide rod are slidingly adapted.

[0011] As a further solution of the present invention: both ends of the driving rod have threads with opposite rotation directions, a threaded hole is set through one side of the sliding plate, the threaded hole and the end of the driving rod are movably adapted through threaded cooperation, and a sliding through hole is set through the other side of the sliding plate and arranged parallel to the threaded hole, and the sliding through hole and the guide rod are slidably adapted.

[0012] As a further solution of the present invention: the outer periphery of the middle part of the driving rod is embedded with teeth, and a sliding tooth plate is slidably embedded in one side of the base close to the driving rod, and the sliding tooth plate meshes with the teeth in the middle part of the driving rod for transmission.

[0013] As a further solution of the present invention: a driving motor is installed on the outer side of the base near the driving rod, the output end of the driving motor is movably embedded in the base, and the output end of the driving motor is transmission-connected with a screw rod that meshes with a sliding tooth plate for transmission, a thin rod parallel to the screw rod slides through the sliding tooth plate, and the thin rod is fixedly connected in the base.

[0014] As a further solution of the present invention: a limiting top block is slidably embedded in the sliding groove, a strip through groove is provided on the sliding plate at a position opposite to the limiting top block, and the limiting top block slides through the strip through groove and is fitted with the lower surface of the lower template.

[0015] As a further solution of the present invention: the limiting top block includes a sliding block, the sliding block and the strip-shaped through-slot are slidably adapted in the horizontal direction and the vertical direction, the lower end of the sliding block is slidably embedded in the bottom surface of the sliding groove, the upper end of the sliding block is arranged in an arc surface, the lower end of the sliding block is fixedly connected with a sliding rod, the end of the sliding rod is fixedly connected with a pad, the pad is slidably embedded in the bottom of the sliding groove, a spring is connected between the pad and the bottom of the sliding groove, sliding protrusions are symmetrically fixedly connected on both sides of the sliding block, and a lifting guide groove slidably adapted to the sliding protrusion is embedded on the side wall corresponding to the sliding protrusion in the strip-shaped through-slot

[0016] As a further solution of the present invention: the lifting guide groove is a sliding track, the sliding track includes a lifting section and a horizontal section that are connected, the lifting section is an inclined groove, the higher end of the lifting section is connected to the horizontal section, and the end of the horizontal section away from the lifting section passes through the end of the lower template.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: when in use, when the two lower templates are aligned, the upper template is attached to the upper end of the lower template, and material is injected into the mold cavity through the injection hole. After the injection molding is completed, the upper template is driven away from the lower template by the hydraulic station, and the two slides are driven relatively away by the driving component so that the two lower templates are relatively separated, so that the injection molded parts can be automatically dropped, the demoulding efficiency is improved, and the risk of defects that may exist when the injection molded parts are demoulded is reduced. After the injection molded parts are removed after completion, the two slides are driven relatively close by the driving component and the two lower templates are attached, and the injection molding process can be performed again. In this way, the device is more efficient and energy-saving in use, and manual operations are reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the present invention.

[0019] Figure 2 It is a schematic diagram of the structure of the present invention when the upper template and the lower template are separated.

[0020] Figure 3 It is a structural schematic diagram of the lower template in the present invention.

[0021] Figure 4 It is a structural schematic diagram of the upper template in the present invention.

[0022] Figure 5 It is a structural schematic diagram of the base in the present invention.

[0023] Figure 6 It is a schematic diagram of the matching structure of the driving rod and the sliding tooth plate in the present invention.

[0024] Figure 7 for Figure 6 Schematic diagram of the enlarged structure of area A in the middle.

[0025] Figure 8 It is a structural schematic diagram of the slide plate in the present invention.

[0026] Fig. 9 for Figure 8 Schematic diagram of the enlarged structure of area B in the middle.

[0027] Fig.10 It is a schematic structural diagram of the position-limiting top block in the present invention.

[0028] In the figure: 1-base, 11-drive motor, 12-sliding groove, 13-injection hole, 14-guide rod, 15-drive rod, 16-sliding tooth plate, 17-limiting top block, 1701-sliding block, 1702-sliding protrusion, 1703-sliding rod, 1704-pad, 2-slide plate, 21-threaded hole, 22-sliding through hole, 23-rotating hinge, 24-strip through groove, 25-sliding track, 3-lower template, 31-mold cavity, 4-upper template, 41-pressing block. DETAILED DESCRIPTION

[0029] See also Figure 1-Figure 3 In an embodiment of the present invention, an energy-efficient plastic injection mold includes a base 1, a lower template 3 is fitted on the base 1, an upper template 4 matching the lower template 3 is correspondingly provided on the lower template 3, two lower templates 3 are symmetrically provided, sliding grooves 12 are symmetrically embedded on both sides of the base 1, a slide plate 2 is slidably provided in the sliding groove 12, the slide plate 2 is located below the lower template 3, and is fitted with the lower template 3, a mold cavity 31 is symmetrically embedded on one side of the two lower templates 3 that are relatively close to each other, an injection hole 13 connected to the mold cavity 31 is provided through the base 1, the slide plate 2 and the relatively distant sides of the two lower templates 3 are rotatably connected by a rotating hinge 23, and a driving component for driving the two slide plates 2 to move relative to each other is embedded in the base 1.

[0030] Preferably, the upper end of the upper template 4 is connected to the output end of the hydraulic station, and the upper template 4 is driven to move closer to or away from the lower template 3 by the output end of the hydraulic station to cooperate in completing the injection molding. When in use, when the two lower templates 3 are aligned, the upper template 4 is attached to the upper end of the lower template 3, and material is injected into the mold cavity 31 through the injection hole 13. After the injection molding is completed, the upper template 4 is driven away from the lower template 3 by the hydraulic station, and the two slides 2 are driven relatively away from each other by the driving component so that the two lower templates 3 are relatively separated, so that the injection molded parts can be automatically dropped, which improves the demolding efficiency and reduces the risk of defects that may exist when the injection molded parts are demolded. After the injection molded parts are removed after completion, the two slides 2 are driven relatively close to each other and the two lower templates 3 are attached by the driving component, and then injection and injection molding can be performed again.

[0031] Among them, a pressing block 41 is fixedly connected to one side of the upper template 4 facing the lower template 3, and the upper end of the cavity composed of the pressing block 41 and the two mold cavities 31 is adapted. When the upper template 4 is attached to the upper end of the lower template 3 during use, the pressing block 41 and the mold cavity 31 together form a closed cavity structure, which is used for injection molding. In the normal processing process, a release agent is generally used. The release agent can be mixed in the material and formed on the surface of the injection molded part after injection molding to facilitate demolding. The release agent can also be sprayed on the surface of the mold cavity 31 and the pressing block 41, which is convenient for demolding after injection molding.

[0032] Furthermore, a sleeve is fixedly connected to the upper end of the base 1, and a sleeve rod is slidably provided in the sleeve. The end of the sleeve rod away from the sleeve is assembled and fixed to the lower side of the edge of the upper template 4. When the upper template 4 approaches or moves away from the lower template 3, the sleeve rod slides relative to the sleeve, which can facilitate guidance to make the movement of the upper template 4 more stable.

[0033] like Figure 3-Figure 8 As shown, the driving assembly includes a driving rod 15 rotatably connected to the sliding groove 12 and a guide rod 14 fixedly arranged in the sliding groove 12. The extending directions of the guide rod 14 and the driving rod 15 are consistent with the sliding direction of the slide plate 2 relative to the sliding groove 12. The slide plate 2 and the driving rod 15 are connected by threaded fitting, and the slide plate 2 and the guide rod 14 are slidingly adapted.

[0034] Preferably, the two ends of the driving rod 15 have threads with opposite rotation directions. When the driving rod 15 rotates, it can synchronously drive the slide plates 2 on both sides to be relatively close or relatively far away, so that the two lower templates 3 can be controlled to be close to each other for injection molding or the two lower templates 3 can be relatively far away for demoulding. The sliding groove 12 is preferably a rectangular groove, so the slide plate 2 will not rotate when sliding, so the driving rod 15 can drive the slide plate 2 to move, and this method can also drive the slide plate 2 to withdraw from the sliding groove 12 all the time, which can facilitate the cleaning and maintenance of the slide plate 2 and the lower template 3.

[0035] Among them, the outer middle part of the driving rod 15 is embedded with teeth, and a sliding tooth plate 16 is slidably embedded on one side of the base 1 close to the driving rod 15. The sliding tooth plate 16 meshes with the teeth in the middle of the driving rod 15 for transmission. When the sliding tooth plate 16 moves relative to the driving rod 15, it can drive the driving rod 15 to rotate, thereby driving the slide plate 2 and the lower template 3 to move relatively closer or farther away. Furthermore, a driving motor 11 is installed on the outer side of the base 1 close to the driving rod 15, and the output end of the driving motor 11 is movably embedded in the base 1, and the output end of the driving motor 11 is connected to a screw rod meshing with the sliding tooth plate 16 for transmission. Preferably, a thin rod parallel to the screw rod is slidably passed through the sliding tooth plate 16, and the thin rod is fixedly connected in the base 1. After starting the driving motor 11, the driving motor 11 drives the lead screw to rotate, and the thin rod limits the sliding tooth plate 16 from rotating, so that it can move relative to the driving rod 15 under the engagement of the lead screw, thereby driving the driving rod 15 to rotate. The control is simple and convenient. The driving motor 11 can adopt a micromotor, and the driving rod 15 can be controlled to rotate forward and reverse by forward and reverse rotation, and then the lower template 3 can be driven relatively close or relatively far away.

[0036] A threaded hole 21 is provided through one side of the slide plate 2, and the threaded hole 21 and the end of the driving rod 15 are movably adapted through threaded matching, and a sliding through hole 22 is provided through the other side of the slide plate 2 and is arranged parallel to the threaded hole 21, and the sliding through hole 22 and the guide rod 14 are slidably adapted. In this way, when the driving rod 15 rotates, the slide plate 2 can be driven to slide on the sliding groove 12, and the relative sliding of the sliding through hole 22 and the guide rod 14 can limit the rotation of the slide plate 2, thereby maintaining the stability of the slide plate 2 when sliding relative to the sliding groove 12.

[0037] like Figure 5-Figure 10 As shown, a limiting top block 17 is slidably embedded in the sliding groove 12, and a strip through groove 24 is provided on the slide plate 2 at a position opposite to the limiting top block 17. The limiting top block 17 slides through the strip through groove 24 and is fitted with the lower surface of the lower template 3. When the two lower templates 3 are relatively far away from each other, the limiting top block 17 moves in the direction relative to the lower template 3 and pushes the lower template 3 to rotate upward relative to its corresponding slide plate 2.

[0038] When in use, the driving motor 11 is controlled to drive the driving rod 15 to rotate, and then drive the slide plate 2 and the lower template 3 to move relatively apart. At this time, when the slide plate 2 moves, the limit top block 17 and the slide plate 2 slide relative to each other, and the slide plate 2 can drive the limit top block 17 to slide vertically to the side of the lower template 3, so that the limit top block 17 can lift the lower template 3 and drive the lower template 3 to rotate relative to the slide plate 2. The two lower templates 3 rotate relative to each other, and the mold can be opened by rotation. The injection molded parts are easier to demold, and direct pulling of the inner walls of the mold cavities 31 on both sides is avoided. Even if there are burrs on the edges of the injection molded parts and the edges of the mold cavities 31 are stuck, the relative rotation of the two lower templates 3 can also better make the injection molded parts and the mold cavities 31 relatively separate.

[0039] Among them, the limiting top block 17 includes a sliding block 1701, and the sliding block 1701 and the strip-shaped through groove 24 are slidably adapted in the horizontal direction and the vertical direction. The lower end of the sliding block 1701 is slidably embedded in the bottom surface of the sliding groove 12, and the upper end of the sliding block 1701 is arranged in an arc surface. The lower end of the sliding block 1701 is fixedly connected with a sliding rod 1703, and the end of the sliding rod 1703 is fixedly connected with a pad 1704, and the pad 1704 is slidably embedded in the bottom of the sliding groove 12. A spring is connected between the pad 1704 and the bottom of the sliding groove 12, and sliding protrusions 1702 are symmetrically fixedly connected on both sides of the sliding block 1701. The inner wall of the strip-shaped through groove 24 and the side wall corresponding to the sliding protrusion 1702 are embedded with a lifting guide groove slidably adapted to the sliding protrusion 1702.

[0040] Under the action of the spring, the upper end of the sliding block 1701 fits with the lower surface of the lower template 3, and the lower template 3 fits with the upper surface of the slide plate 2. When the two slide plates 2 slide on the sliding groove 12 and move away from each other, the sliding protrusion 1702 slides and is pushed upward under the drive of the lifting guide groove, and the spring is stretched. At the same time, the upper end of the sliding block 1701 can push the lower template 3 to rotate relative to the slide plate 2, so that the two lower templates 3 can rotate relative to each other at the moment of moving away from each other, thereby realizing demoulding in this way, because the relative rotation connection between the lower template 3 and the slide plate 2 is achieved by rotating the hinge 23. , and the rotating hinge 23 is connected between the lower edge of the lower template 3 and the upper edge of the slide plate 2, so the two lower templates 3 will not affect the relative rotation in the state of abutment. After the relative rotation, when the slide plate 2 continues to move away from each other, the angle of the lower template 3 is limited by the sliding block 1701 to remain constant and will not continue to rotate. When the two slide plates 2 are relatively close to each other, when the lower template 3 is close to a certain degree, the sliding protrusion 1702 is limited by the lifting guide groove and drives the sliding block 1701 to move downward, so that the lower template 3 can gradually return to a horizontal state until the two lower templates 3 are completely in contact. In this way, the lower template 3 can be relatively rotated immediately when the mold is opened, thereby improving the demoulding efficiency. At the same time, the rotation angle of the lower template 3 can be stably maintained after the lower template 3 is rotated, avoiding excessive rotation and forming a flip, and preferably, the strip groove 24 runs through the relatively close edges of the two slide plates 2, and the sliding track 25 runs through the edge of the strip groove 24 on the relatively close side of the two slide plates 2, so that as the two slide plates 2 move away from each other, the slide plate 2 can be detached from the sliding groove 12, thereby facilitating maintenance.

[0041] Preferably, the lifting guide groove is a sliding rail 25, and the sliding rail 25 includes a connected lifting section and a horizontal section, the lifting section is an inclined groove, the higher end of the lifting section is connected to the horizontal section, and the end of the horizontal section away from the lifting section passes through the end of the lower template 3.

[0042] When in use, the sliding protrusion 1702 is initially located at the bottom of the lifting section in the sliding track 25. As the sliding protrusion 1702 slides upward in the lifting section, the sliding block 1701 can move upward and push the lower template 3 to rotate relative to the slide plate 2. As the sliding protrusion 1702 gradually enters the horizontal section, the height of the sliding block 1701 remains unchanged. As the sliding protrusion 1702 continues to move, it can slide out through the end of the horizontal section, and the slide plate 2 can be separated from the sliding groove 12, so as to facilitate replacement. In the process of the sliding protrusion 1702 and the sliding track 25 cooperating, the sliding block 1701 can automatically be lifted and held, and the operation is simple and convenient, and the response speed is fast.

Claims

1. An energy-efficient plastic injection mold, comprising a base, a lower template is fitted on the base, an upper template matching the lower template is correspondingly arranged on the lower template, two lower templates are symmetrically arranged, and sliding grooves are symmetrically embedded on both sides of the base, characterized in that: A slide plate is provided in the sliding groove for sliding cooperation, the slide plate is located below the lower template and is arranged in close contact with the lower template, a mold cavity is symmetrically embedded on the relatively close side of the two lower templates, an injection hole connected to the mold cavity is provided through the base, the slide plate and the relatively far sides of the two lower templates are rotatably connected by a rotating hinge, and a driving component for driving the two slide plates to move relative to each other is embedded on the base; The driving assembly comprises a driving rod rotatably connected in the sliding groove and a guide rod fixedly arranged in the sliding groove, the extending directions of the guide rod and the driving rod are consistent with the sliding direction of the slide relative to the sliding groove, the slide and the driving rod are connected by threaded fitting, and the slide and the guide rod are slidably adapted; a limited top block is slidably embedded in the sliding groove, a strip through groove is penetrated at a position of the slide relative to the limited top block, the limited top block slides through the strip through groove and is arranged in contact with the lower surface of the lower template; The limiting top block includes a sliding block, and the sliding block and the strip-shaped through-slot are slidably adapted in the horizontal direction and the vertical direction, and the lower end of the sliding block is slidably embedded in the bottom surface of the sliding groove, and the upper end of the sliding block is arranged in an arc surface, and the lower end of the sliding block is fixedly connected with a sliding rod, and the end of the sliding rod is fixedly connected with a pad, and the pad is slidably embedded in the bottom of the sliding groove, and a spring is connected between the pad and the bottom of the sliding groove, and sliding protrusions are symmetrically fixedly connected on both sides of the sliding block, and a lifting guide groove slidably adapted to the sliding protrusion is embedded on the side wall corresponding to the sliding protrusion in the strip-shaped through-slot; The lifting guide groove is a sliding track, which includes a lifting section and a horizontal section that are connected. The lifting section is an inclined groove, the higher end of the lifting section is connected to the horizontal section, and the end of the horizontal section away from the lifting section passes through the end of the slide.

2. The high-efficiency and energy-saving plastic injection mold according to claim 1, characterized in that: A pressing block is fixedly connected to one side of the upper mold plate facing the lower mold plate, and the pressing block is adapted to the upper end of a cavity formed by the two mold cavities.

3. The high-efficiency and energy-saving plastic injection mold according to claim 1, characterized in that: A sleeve is fixedly connected to the upper end of the base, a sleeve rod is slidably arranged in the sleeve, and the end of the sleeve rod away from the sleeve is assembled and fixed on the lower side of the edge end of the upper template.

4. The high-efficiency and energy-saving plastic injection mold according to claim 1, characterized in that: The two ends of the driving rod have threads with opposite rotation directions, a threaded hole is set through one side of the slide board, the threaded hole and the end of the driving rod are movably adapted through threaded cooperation, and a sliding through hole is set through the other side of the slide board and arranged parallel to the threaded hole, and the sliding through hole is slidably adapted to the guide rod.

5. The high-efficiency and energy-saving plastic injection mold according to claim 4, characterized in that: The outer periphery of the middle part of the driving rod is embedded with teeth, and a sliding tooth plate is slidably embedded in one side of the base close to the driving rod. The sliding tooth plate meshes with the teeth in the middle part of the driving rod for transmission.

6. The high-efficiency and energy-saving plastic injection mold according to claim 5, characterized in that: A driving motor is installed on the outer side of the base near the driving rod, and the output end of the driving motor is movably embedded in the base. The output end of the driving motor is transmission-connected with a screw rod that meshes with a sliding tooth plate for transmission. A thin rod parallel to the screw rod slides through the sliding tooth plate, and the thin rod is fixedly connected to the base.

Images