CN115056437A - Injection mold release mechanism - Google Patents
Injection mold release mechanism Download PDFInfo
- Publication number
- CN115056437A CN115056437A CN202210685334.1A CN202210685334A CN115056437A CN 115056437 A CN115056437 A CN 115056437A CN 202210685334 A CN202210685334 A CN 202210685334A CN 115056437 A CN115056437 A CN 115056437A
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- China
- Prior art keywords
- plate
- step surface
- delay rod
- delay
- injection mold
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- Pending
Links
- 238000002347 injection Methods 0.000 title claims abstract description 30
- 239000007924 injection Substances 0.000 title claims abstract description 30
- 230000007246 mechanism Effects 0.000 title claims abstract description 28
- 230000000149 penetrating effect Effects 0.000 claims description 7
- 230000003111 delayed effect Effects 0.000 claims description 4
- 238000000034 method Methods 0.000 claims 1
- 230000003014 reinforcing effect Effects 0.000 description 7
- 238000001746 injection moulding Methods 0.000 description 6
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 210000002435 tendon Anatomy 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/33—Moulds having transversely, e.g. radially, movable mould parts
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention provides a release mechanism of an injection mold, which comprises a slider plate, an ejector plate arranged in parallel with the slider plate at intervals, a driving piece connected with the slider plate, a delay rod, a pressing plate arranged on a fixed mold in a vertically movable manner, and an elastic piece for driving the pressing plate to move downwards, wherein the delay rod extends along the left-right direction and comprises a first delay rod and a second delay rod which are respectively connected with the slider plate and the ejector plate and are arranged side by side, an inclined step surface is arranged on the first delay rod, a vertical step surface is arranged on the second delay rod, a left edge at the bottom of the pressing plate is propped against the inclined step surface and the vertical step surface, when the driving piece drives the slider plate to slide rightwards, the slider can be driven to be released firstly and drives the first delay rod to move rightwards, the pressing plate is lifted upwards through the inclined step surface to be separated from the vertical step surface, so that the slider plate can prop the ejector plate rightwards and drive the slider to be released, the mechanism has the advantages of small occupied space, compact structure, small control difficulty, simple operation and difficult damage.
Description
Technical Field
The invention relates to the technical field of injection molds, in particular to an injection mold release mechanism.
Background
The injection mold is a tool for producing injection molding parts and also a tool for endowing the injection molding parts with complete structures and accurate sizes, heated and melted plastics are injected into a mold cavity of the injection mold through an injection molding machine, and the injection molding parts can be obtained after cooling and solidification.
Along with the continuous promotion of strength, integrity and lightweight requirements, the structure of the existing injection molding part is more and more complex, the reinforcing rib plates arranged in a staggered mode are more and more, rib space enclosed between the adjacent reinforcing rib plates is more and more dense, as shown in figure 1, the problem that the reinforcing rib plates are difficult to demold due to the fact that the rib space is filled with the slider only to carry out injection molding is solved by the mode that the rib space is filled with the slider, so that the reinforcing rib plates are easy to tear apart, in order to solve the problem, a slider thimble for abutting against the bottom wall of the rib space is arranged on the slider in a penetrating mode, the reinforcing rib plates are prevented from deforming along with the detachment of the slider due to the forward and backward detachment of the slider and the slider thimble, most of injection molds adopting the mode are provided with two groups of driving pieces for respectively driving the slider and the slider thimble to detach, the occupied space is large, the structure is bloated, when the injection molds are used, the starting time of the two groups of driving pieces is required to be accurately controlled, the control difficulty is large, the operation is complex, and the operation of the injection molds is easy to cause the slider to miss, The slider thimble is damaged.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides the injection mold release mechanism which can realize the forward and backward release of the sliding block and the sliding block thimble, and has the advantages of small occupied space, compact structure, small control difficulty, simple operation and difficult damage.
In order to achieve the above object, the present invention provides an injection mold release mechanism, comprising:
the sliding block plate is connected with a sliding block;
the ejector plate is parallel to the sliding block plate and arranged at intervals, and a sliding block ejector pin is connected to the ejector plate;
a driving member connected to the slider plate;
a delay bar extending in the left-right direction;
a pressing plate which is arranged on the fixed die and can move up and down;
an elastic member;
the delay rod comprises a first delay rod and a second delay rod which are arranged side by side, the left end of the first delay rod is connected to the sliding plate, the left end of the second delay rod is connected to the thimble plate, the upper surface of the first delay rod is provided with an inclined step surface which is inclined downwards and extends rightwards, the upper surface of the second delay rod is provided with a vertical step surface which is inclined downwards and extends vertically downwards, the elastic part is used for driving the pressing plate to move downwards, so that the left edge at the bottom of the pressing plate supports against the inclined step surface and the vertical step surface, when the driving part drives the sliding plate to slide rightwards, the sliding plate drives the sliding block to be separated and drives the first delay rod to move rightwards, the pressing plate is gradually lifted upwards through the inclined step surface, so that the pressing plate is separated from the vertical step surface, and the sliding plate can be pushed rightwards to the thimble plate, and realizing delayed disengagement of the ejector pin of the sliding block.
Preferably, the highest point of the inclined step surface is flush with the highest point of the vertical step surface, and the lowest point of the inclined step surface is flush with the lowest point of the vertical step surface.
Preferably, a groove for accommodating the first delay rod is formed in the middle of the second delay rod.
Preferably, the left end portions of the first delay rod and the second delay rod are respectively provided with a T-shaped head so as to be fixedly connected with the slider plate and the ejector plate.
Preferably, the fixed die is connected with a supporting table, and the pressing plate is embedded in an installation groove in the supporting table in a vertically movable manner.
Further preferably, screws are arranged on two sides of the pressure plate in a penetrating mode, and the lower end portions of the screws are in threaded connection with the support table.
Further preferably, the elastic member is a compression spring disposed on the screw in a penetrating manner, and two end portions of the compression spring respectively abut against a head portion of the screw and an upper surface of the pressure plate.
Preferably, when the driving member is not actuated, the upper surface of the pressure plate is flush with the upper surface of the support table.
Preferably, an angle between the inclined step surface and the upper surface of the first delay lever is less than or equal to 40 °.
Preferably, the injection mold release mechanism further includes a proximity switch for detecting a position of a right end of the second delay lever.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages:
the invention provides a release mechanism of an injection mold, which comprises a slider plate, an ejector plate arranged in parallel with the slider plate at intervals, a driving piece connected with the slider plate, a delay rod, a pressing plate arranged on a fixed mold in a vertically movable manner, and an elastic piece for driving the pressing plate to move downwards, wherein the delay rod extends along the left-right direction and comprises a first delay rod and a second delay rod which are respectively connected with the slider plate and the ejector plate and are arranged side by side, an inclined step surface is arranged on the first delay rod, a vertical step surface is arranged on the second delay rod, a left edge at the bottom of the pressing plate is propped against the inclined step surface and the vertical step surface, when the driving piece drives the slider plate to slide rightwards, the slider can be driven to be released firstly, the first delay rod is driven to move rightwards, the pressing plate is gradually lifted upwards through the inclined step surface, and finally the pressing plate is separated from the vertical step surface, so that the slider plate can prop the ejector plate rightwards and drive the slider ejector pin to be released, the mechanism has the advantages of small occupied space, compact structure, small control difficulty, simple operation and difficult damage.
Drawings
Fig. 1 is a perspective view of a common injection molded part.
Fig. 2 is a schematic perspective view of the preferred embodiment of the present invention, with the left slider hidden.
Fig. 3 is a perspective view of the slider on the right side of fig. 1, with parts omitted.
Fig. 4 is a partially enlarged schematic view at a in fig. 1.
Fig. 5 is an exploded view of the delay rod and the pressure plate of fig. 4, with an observation angle adjusted.
Wherein:
10. a slider plate; 11. a slider; 12. a protrusion; 20. an ejector plate; 21. a slider thimble; 30. a drive member; 40. a delay lever; 41. a first delay lever; 411. inclining the step surface; 42. a second delay lever; 421. a vertical step surface; 422. a groove; a T-shaped portion; 50. pressing a plate; 51. a screw; 52. a head portion; 60. an elastic member; 70. fixing a mold; 71. a support table; 72. a first mounting groove; 73. a second mounting groove; 80. a proximity switch; 81. a support; 91. a reinforcing rib plate; 92. the tendon position.
Detailed Description
The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, and the scope of the present invention can be clearly and clearly defined.
The up-down, left-right, and front-back directions described in the present invention refer to the up-down, left-right, and front-back directions in fig. 2.
As shown in fig. 2, the injection mold release mechanisms provided by the present invention have two sets of release mechanisms, which are distributed symmetrically left and right along the center of the injection mold, and the two sets of release mechanisms have the same structure, and the release mechanism on the right side is taken as an example for description.
As shown in fig. 2 to 5, the present invention provides an injection mold release mechanism including: the device comprises a slider plate 10, an ejector plate 20, a driving part 30, a delay rod 40, a pressing plate 50 and an elastic part 60, wherein the right end face of the slider plate 10 is used for connecting a slider 11, the slider plate 10 is connected to a fixed die 70 in a left-right sliding manner, and the slider 11 can be driven to be disengaged by sliding to the right; the ejector plate 20 is used for installing the slider ejector pins 21, specifically, the left end portions of the slider ejector pins 21 penetrate through the slider 11 and fill rib positions 92 surrounded by reinforcing ribs 91 together with protrusions 12 on the slider 11, the right end portions of the slider ejector pins 21 penetrate through the slider 11 and the slider plate 10 and then are connected to the ejector plate 20, the ejector plate 20 can be connected to the fixed die 70 in a left-right sliding mode and can drive all the slider ejector pins 21 connected to the fixed die to be disengaged through right sliding, and the ejector plate 20 is located on the right side of the slider plate 10 and is parallel to the slider plate 10 and arranged at intervals; the driving part 30 is fixed on the fixed die 70 and connected with the slider plate 10 through a connecting rod penetrating through the ejector plate 20, the driving part 30 is used for driving the slider plate 10 to slide left and right, and preferably, the driving part 30 is a hydraulic cylinder; the delay bar 40 extends along the left-right direction, the delay bar 40 comprises a first delay bar 41 and a second delay bar 42, the left end of the first delay bar 41 is connected to the slider plate 10, the left end of the second delay bar 42 is connected to the ejector plate 20, the first delay bar 41 and the second delay bar 42 are arranged side by side, the upper surface of the first delay bar 41 is provided with an inclined step surface 411 extending obliquely downwards and rightwards, the upper surface of the second delay bar 42 is provided with a vertical step surface 421 extending vertically downwards, the press plate 50 is arranged on the fixed die 70 in a vertically movable manner, the press plate 50 is perpendicular to the delay bar 40, the elastic member 60 is used for driving the press plate 50 to move downwards, so that the left edge of the bottom of the press plate 50 is abutted against the inclined step surface 411 and the vertical step surface 421, when the driving member 30 does not act, the position of the slider plate 10 connected with the driving member 30 is kept fixed, because the press plate 50 is abutted against the vertical step surface 421, the ejector plate 20 cannot be separated rightwards, and the position is kept fixed because the slider ejector pin 21 is filled in the rib position 92 and cannot slide leftwards; when the driving part 30 drives the slider plate 10 to slide rightward, the slider plate 10 drives the slider 11 to disengage rightward, and drives the first delay rod 41 to move rightward, the pressing plate 50 is gradually lifted upward by the relative movement of the inclined step surface 411 and the left edge of the bottom of the pressing plate 50, and finally the pressing plate 50 is separated from the vertical step surface 421, and when the slider plate 10 continues to move rightward, the ejector plate 20 can be tightly supported and pushed rightward, so that the rear disengagement (rightward disengagement) of the slider ejector pin 21 is realized.
The mechanism can realize the delayed separation of the sliding block and the sliding block thimble only by driving the sliding block plate to act by one driving piece, and has the advantages of small occupied space, compact structure, small control difficulty, simple operation and difficult damage.
In this embodiment, the highest point of the inclined step surface 411 is flush with the highest point of the vertical step surface 421, and the lowest point of the inclined step surface 411 is flush with the lowest point of the vertical step surface 421, so that the movable mold is easy to debug, no avoidance groove needs to be formed in the movable mold, and the movable mold can be simplified.
To facilitate the lifting of the pressure plate 50, the angle between the inclined step surface 411 and the upper surface of the first delay bar 41 should be less than or equal to 40 °, and this angle also affects the time interval between the delayed disengagements, and in this embodiment, this angle is 12 °.
In order to avoid the relative shaking of the first delay rod 41 and the second delay rod 42, in this embodiment, the middle of the second delay rod 42 is provided with a groove 422 for accommodating the first delay rod 41, and the width of the groove 422 is 0.1-0.3mm larger than that of the first delay rod 41, so that guiding can be achieved, and friction can be reduced.
In order to facilitate the fixed connection with the slider plate 10 and the ejector plate 20, the left end portions of the first delay bar 41 and the second delay bar 42 are each provided with a T-shaped head 43 for mounting a fixing bolt.
For the convenience of supporting, the fixed mold 70 is connected with a supporting base 71, the upper surface of the supporting base 71 is provided with a first mounting groove 72 and a second mounting groove 73 which are vertically penetrated, the pressing plate 50 can be embedded in the first mounting groove 71 in a vertically moving manner, the two sides of the pressing plate 50 are penetrated with screw rods 51, the lower end parts of the screw rods 51 are in threaded connection with the supporting base 71, the elastic element 60 is a pressure spring which is penetrated through the upper end parts of the screw rods 51, the two end parts of the pressure spring respectively abut against the head parts of the screw rods 51 and the upper surface of the pressing plate 50, and the second mounting groove 73 is used for guiding by penetrating through the right end parts of the delay rods 40.
When the driving member 30 is not operated, the upper surface of the pressing plate 50 is flush with the upper surface of the supporting base 71 to avoid forming an avoiding groove on the movable mold.
In order to detect whether the slide block thimble 21 is released in position, the injection mold release mechanism further comprises a proximity switch 80 for detecting the position of the right end portion of the second delay rod 42, and the proximity switch 80 is fixed right behind the right end portion of the second delay rod 42 through a bracket 81.
The above embodiments are merely illustrative of the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the content of the present invention and implement the invention, and not to limit the scope of the invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered by the scope of the present invention.
Claims (10)
1. An injection mold release mechanism comprising:
the sliding block plate is connected with a sliding block;
the ejector plate is parallel to the sliding block plate and arranged at intervals, and a sliding block ejector pin is connected to the ejector plate;
a driving member connected to the slider plate;
a delay bar extending in the left-right direction;
a pressing plate which is arranged on the fixed die and can move up and down;
an elastic member;
the method is characterized in that:
the delay rod comprises a first delay rod and a second delay rod which are arranged side by side, the left end of the first delay rod is connected to the sliding plate, the left end of the second delay rod is connected to the thimble plate, the upper surface of the first delay rod is provided with an inclined step surface which is inclined downwards and extends rightwards, the upper surface of the second delay rod is provided with a vertical step surface which is inclined downwards and extends vertically downwards, the elastic part is used for driving the pressing plate to move downwards, so that the left edge at the bottom of the pressing plate supports against the inclined step surface and the vertical step surface, when the driving part drives the sliding plate to slide rightwards, the sliding plate drives the sliding block to be separated and drives the first delay rod to move rightwards, the pressing plate is gradually lifted upwards through the inclined step surface, so that the pressing plate is separated from the vertical step surface, and the sliding plate can be pushed rightwards to the thimble plate, and realizing delayed disengagement of the ejector pin of the sliding block.
2. The injection mold release mechanism of claim 1, wherein: the highest point of the inclined step surface is flush with the highest point of the vertical step surface, and the lowest point of the inclined step surface is flush with the lowest point of the vertical step surface.
3. The injection mold release mechanism of claim 1, wherein: the middle part of the second delay rod is provided with a groove for accommodating the first delay rod.
4. The injection mold release mechanism of claim 1, wherein: the left end parts of the first delay rod and the second delay rod are respectively provided with a T-shaped head so as to be fixedly connected with the sliding plate and the ejector plate.
5. The injection mold release mechanism of claim 1, wherein: the fixed die is connected with a supporting table, and the pressing plate can be embedded in the mounting groove on the supporting table in a vertically moving mode.
6. The injection mold release mechanism of claim 5, wherein: and screw rods are arranged on two sides of the pressing plate in a penetrating manner, and the lower end parts of the screw rods are in threaded connection with the supporting platform.
7. The injection mold release mechanism of claim 6, wherein: the elastic piece is a pressure spring which is arranged on the screw in a penetrating mode, and two end portions of the pressure spring respectively abut against the head portion of the screw and the upper surface of the pressing plate.
8. The injection mold release mechanism of claim 1, wherein: when the driving piece does not act, the upper surface of the pressing plate is flush with the upper surface of the supporting platform.
9. The injection mold release mechanism of claim 1, wherein: and the included angle between the inclined step surface and the upper surface of the first delay rod is less than or equal to 40 degrees.
10. The injection mold release mechanism of claim 1, wherein: the injection mold release mechanism further comprises a proximity switch for detecting the position of the right end of the second delay rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210685334.1A CN115056437A (en) | 2022-06-15 | 2022-06-15 | Injection mold release mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210685334.1A CN115056437A (en) | 2022-06-15 | 2022-06-15 | Injection mold release mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115056437A true CN115056437A (en) | 2022-09-16 |
Family
ID=83201963
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210685334.1A Pending CN115056437A (en) | 2022-06-15 | 2022-06-15 | Injection mold release mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115056437A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115056436A (en) * | 2022-06-15 | 2022-09-16 | 苏州双荣橡塑有限公司 | Dust collector hanger injection mold |
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