CN210139592U - Balanced type ejection device of injection mold - Google Patents

Balanced type ejection device of injection mold Download PDF

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Publication number
CN210139592U
CN210139592U CN201821935706.7U CN201821935706U CN210139592U CN 210139592 U CN210139592 U CN 210139592U CN 201821935706 U CN201821935706 U CN 201821935706U CN 210139592 U CN210139592 U CN 210139592U
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thimble
die
articulated shaft
injection mold
fixed
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CN201821935706.7U
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Chinese (zh)
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翁国峰
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Shantou Tongde Craft Products Co Ltd
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Shantou Tongde Craft Products Co Ltd
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Abstract

The utility model discloses an injection mold's balanced type ejecting device, including movable mould board and die, the die shaping has the die cavity, the plastic product is left and is arranged in the die intracavity, the shaping has the drive chamber on the movable mould board, the drive intracavity is equipped with the drive seat that removes about can, be fixed with the slide rail on the drive seat, first articulated shaft and second articulated shaft, sliding connection has a plurality of sliders on the slide rail, it has two linking arms to articulate on every slider, the other end of every linking arm articulates respectively on a kicking block that corresponds, first articulated shaft and second articulated shaft are also articulated through a linking arm and the kicking block that corresponds, the left end of every kicking block is equipped with a thimble, the thimble plug bush is in the die. The utility model discloses can make many thimble atresss even, can effectively avoid making the injury because the atress is uneven to the plastic goods.

Description

Balanced type ejection device of injection mold
The technical field is as follows:
the invention relates to the technical field of injection molds, in particular to a balanced type ejection device of an injection mold.
Background art:
an injection mold is a tool for producing plastic products; and is also a tool for giving the plastic product complete structure and accurate dimension. Injection molding is a process used to mass produce parts of some complex shapes. Specifically, the plastic melted by heating is injected into a mold cavity from an injection molding machine at high pressure, and a formed product is obtained after cooling and solidification. Often can the phenomenon of plastic goods absorption in the die, cause and get a difficulty, for taking out plastic goods smoothly from the die, common practice is to increase the liftout device below the die, ejecting plastic goods from the die through thimble and the elastomeric element that sets up in the liftout device, this kind of ejecting mode can solve the problem of getting a piece from the die, because the thimble is different in size because machining error arouses, only one or several thimbles push up on the product sometimes, several thimble atresss are uneven, need cause plastic goods to warp, reduce plastic goods's qualification rate.
The invention content is as follows:
the invention aims to overcome the defects of the prior art and provides a balanced ejection device of an injection mold, which can ensure that a plurality of ejector pins are uniformly stressed and can effectively avoid damage to plastic products due to nonuniform stress.
The scheme for solving the technical problems is as follows:
a balanced type ejection device of an injection mold comprises a movable mold plate and a female mold fixed on the movable mold plate, wherein a female mold cavity is formed in the female mold, a plastic product is reserved in the female mold cavity, a driving cavity is formed in the movable mold plate, a driving seat capable of moving left and right is arranged in the driving cavity, a driving seat plug bush is arranged on two guide rails arranged in the left and right directions, the guide rails are fixed on the rear side wall of the driving cavity, a sliding rail, a first hinged shaft and a second hinged shaft which are arranged up and down are fixed on the driving seat, the first hinged shaft and the second hinged shaft are respectively positioned at the upper end and the lower end of the sliding rail, a plurality of sliding blocks are connected on the sliding rail in a sliding mode, two connecting arms are hinged on each sliding block, the other end of each connecting arm is hinged on a corresponding ejecting block, a connecting arm is also hinged on the first hinged shaft and the second hinged, the other end of the connecting arm hinged on the second hinged shaft is hinged on the ejector block at the lowest side, the left end of each ejector block is provided with a thimble, the thimble is inserted in the female die, the driving seat is fixed with a connecting support lug, the connecting support lug is fixedly connected with a piston rod of the oil cylinder, and the oil cylinder is fixed on the rear side wall of the driving cavity.
The shaping has a plurality of communicating thimble holes with the die cavity on the die, and the cross-section of thimble hole is the I shape, and every thimble plug bush is in a thimble hole that corresponds, and the thimble includes the top, connects pole and footstock, and in the left end hole of thimble hole was arranged in to the top, the left end face of top flushed the setting with the bottom surface of die cavity, the top with connect the step face between the pole and press on the left side step face of thimble hole, the pressure spring has been cup jointed on connecting the pole, the both ends of pressure spring press respectively on the right side step face and the footstock of thimble hole, the footstock presses on the kicking block.
And U-shaped barrier strips are fixed on the right side wall of the top block, and each U-shaped barrier strip is positioned between two corresponding connecting arms.
The left end of the driving seat is formed with a baffle protruding upwards, and the front end face of the baffle is lower than the rear side wall of the connecting arm but higher than the rear side wall of the ejector block.
The top block is rectangular.
The invention has the following outstanding effects: compared with the prior art, the ejector pin has the advantages that the stress of the ejector pins can be uniform, and the damage to plastic products caused by uneven stress can be effectively avoided.
Description of the drawings:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a partial assembly view of a part of the present invention
Fig. 3 is a partial cross-sectional view of the present invention.
The specific implementation mode is as follows:
in the embodiment, as shown in fig. 1 to 3, a balanced ejection device for an injection mold comprises a movable mold plate 11 and a female mold 12 fixed on the movable mold plate 11, wherein a female mold cavity 121 is formed in the female mold 12, a plastic product 13 is left in the female mold cavity 121, a driving cavity 111 is formed in the movable mold plate 11, a driving seat 21 capable of moving left and right is arranged in the driving cavity 111, the driving seat 21 is inserted and sleeved on two guide rails 22 arranged in the left and right directions, the guide rails 22 are fixed on the rear side wall of the driving cavity 111, a slide rail 23, a first hinge shaft 24 and a second hinge shaft 25 are fixed on the driving seat 21, the first hinge shaft 24 and the second hinge shaft 25 are respectively located at the upper end and the lower end of the slide rail 23, a plurality of slide blocks 26 are slidably connected on the slide rail 23, two connecting arms 27 are hinged on each slide block 26, the other end of each connecting arm 27 is respectively hinged on a, also articulated on first articulated shaft 24 and the second articulated shaft 25 have a linking arm 27, and the other end of the linking arm 27 who articulates on first articulated shaft 24 articulates on the kicking block 28 of the top, and the other end of the linking arm 27 who articulates on second articulated shaft 25 articulates on the kicking block 28 of downside, the left end of every kicking block 28 is equipped with a thimble 29, and thimble 29 plug bush is in die 12, be fixed with on the drive seat 21 and connect journal stirrup 30, connect the piston rod fixed connection of journal stirrup 30 and hydro-cylinder 31, the hydro-cylinder 31 is fixed on the back lateral wall of drive chamber 111.
Furthermore, a plurality of thimble holes 122 communicated with the cavity 121 are formed in the die 12, the cross section of each thimble hole 122 is i-shaped, each thimble 29 is inserted in a corresponding thimble hole 122, each thimble 29 comprises a thimble 291, a connecting rod 292 and a thimble 293, the thimble 291 is arranged in the left end hole of the thimble hole 122, the left end face of the thimble 291 is flush with the bottom surface of the cavity 121, the step face between the thimble 291 and the connecting rod 292 is pressed on the step face on the left side of the thimble hole 122, the connecting rod 292 is sleeved with a pressure spring 32, two ends of the pressure spring 32 are respectively pressed on the step face on the right side of the thimble hole 122 and the thimble 293, and the thimble 293 is pressed on the top block 28.
Furthermore, the right side wall of the top block 28 is fixed with "U" shaped bars 33, and each "U" shaped bar 33 is located between two corresponding connecting arms 27 for limiting the direction of rotation of the top block 3 from being too large.
Furthermore, the left end of the driving seat 21 is formed with a baffle 211 protruding upwards, the front end surface of the baffle 211 is lower than the rear side wall of the connecting arm 27 but higher than the rear side wall of the top block 28, and the baffle 211 is used for limiting the excessive backward movement of the top block 3.
Further, the top block 28 has a rectangular shape.
The working principle is as follows: after the plastic product is formed, the female die 12 moves along with the movable die plate 11 to separate from the male die, the plastic product 13 is clamped in the female die cavity 121, the oil cylinder 31 is opened, the piston rod of the oil cylinder 31 drives the movable seat 21 to move left (to the ejector pins), the movable seat 21 moves left through the slide rail 23, the first hinge shaft 24, the second hinge shaft 25 and the slide block 26, the first hinge shaft 24 and the second hinge shaft 25 drive the ejector block 28 to move left through a plurality of connecting arms 27, the ejector block 28 pressed against the ejector pins 29 at first stops moving left (due to the length of the ejector pins due to the machining precision problem, all the ejector blocks cannot be simultaneously pressed against the ejector pins), and two corresponding connecting arms 27 are driven to open, the connecting arms 27 drive the slide block 26 to move on the slide rail 23 to be adjusted to a proper position, when all the ejector blocks 28 are pressed against a corresponding ejector pin 29, the stress, then, the moving seat 21 continues to move leftwards to drive the ejector 29 to move leftwards, and the ejector 29 pushes the plastic product 13 away from the cavity 121.
Finally, the above embodiments are only for illustrating the present invention and not for limiting the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, so that all equivalent technical solutions also belong to the scope of the present invention, and the scope of the present invention should be defined by the claims.

Claims (5)

1. The utility model provides an injection mold's balanced type ejecting device, includes movable mould board (11) and fixes die (12) on movable mould board (11), die (12) shaping has die cavity (121), and plastic product (13) are kept somewhere in die cavity (121), its characterized in that: a driving cavity (111) is formed in the movable die plate (11), a driving seat (21) capable of moving left and right is arranged in the driving cavity (111), the driving seat (21) is sleeved on two guide rails (22) arranged in the left and right directions, the guide rails (22) are fixed on the rear side wall of the driving cavity (111), a slide rail (23), a first articulated shaft (24) and a second articulated shaft (25) which are arranged up and down are fixed on the driving seat (21), the first articulated shaft (24) and the second articulated shaft (25) are respectively positioned at the upper end and the lower end of the slide rail (23), a plurality of sliders (26) are connected on the slide rail (23) in a sliding manner, two connecting arms (27) are hinged on each slider (26), the other end of each connecting arm (27) is hinged on a corresponding ejector block (28), and a connecting arm (27) is hinged on each first articulated shaft (24) and the second articulated shaft (25), the other end of linking arm (27) articulated on first articulated shaft (24) articulates on kicking block (28) of the most advanced side, and the other end of linking arm (27) articulated on second articulated shaft (25) articulates on kicking block (28) of downside, the left end of every kicking block (28) is equipped with a thimble (29), and thimble (29) plug bush is in die (12), be fixed with on drive seat (21) and connect journal stirrup (30), connect the piston rod fixed connection of journal stirrup (30) and hydro-cylinder (31), hydro-cylinder (31) are fixed on the back lateral wall in drive chamber (111).
2. The balanced ejection device of an injection mold according to claim 1, wherein: the die is characterized in that a plurality of thimble holes (122) communicated with a die cavity (121) are formed in the die (12), the cross section of each thimble hole (122) is I-shaped, each thimble (29) is inserted in the corresponding thimble hole (122), each thimble (29) comprises a thimble (291), a connecting rod (292) and a jacking platform (293), the thimble (291) is arranged in the left end hole of the thimble hole (122), the left end surface of the thimble (291) is flush with the bottom surface of the die cavity (121), the step surface between the thimble (291) and the connecting rod (292) is pressed on the step surface on the left side of the thimble hole (122), a pressure spring (32) is sleeved on the connecting rod (292), two ends of the pressure spring (32) are respectively pressed on the step surface on the right side of the thimble hole (122) and the jacking platform (293), and the jacking platform (293) is pressed on a jacking block (28).
3. The balanced ejection device of an injection mold according to claim 1, wherein: and U-shaped retaining strips (33) are fixed on the right side wall of the top block (28), and each U-shaped retaining strip (33) is positioned between two corresponding connecting arms (27).
4. The balanced ejection device of an injection mold according to claim 3, wherein: the left end of the driving seat (21) is formed with a baffle (211) protruding upwards, and the front end face of the baffle (211) is lower than the rear side wall of the connecting arm (27) but higher than the rear side wall of the top block (28).
5. The balanced ejection device of an injection mold according to claim 4, wherein: the top block (28) is rectangular.
CN201821935706.7U 2018-11-23 2018-11-23 Balanced type ejection device of injection mold Active CN210139592U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201821935706.7U CN210139592U (en) 2018-11-23 2018-11-23 Balanced type ejection device of injection mold

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201821935706.7U CN210139592U (en) 2018-11-23 2018-11-23 Balanced type ejection device of injection mold

Publications (1)

Publication Number Publication Date
CN210139592U true CN210139592U (en) 2020-03-13

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Family Applications (1)

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CN201821935706.7U Active CN210139592U (en) 2018-11-23 2018-11-23 Balanced type ejection device of injection mold

Country Status (1)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109483829A (en) * 2018-11-23 2019-03-19 翁国峰 A kind of balanced type liftout attachment of injection mold

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109483829A (en) * 2018-11-23 2019-03-19 翁国峰 A kind of balanced type liftout attachment of injection mold
CN109483829B (en) * 2018-11-23 2023-12-26 深圳市成瀚科技有限公司 Balanced type ejection device of injection mold

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