Secondary ejection mold

Abstract

The utility model relates to a secondary ejection mold, which comprises a fixed mold seat, a fixed block, a fixed mold plate, a first ejector plate, a second ejector plate and an ejection control mechanism, the ejection control mechanism comprises a sliding seat mounted on the second ejector plate, a sliding block mounted on the fixed mold plate and capable of moving along a sliding groove of the sliding seat, and a locking block elastically arranged on the first ejector plate, the sliding seat is concavely provided with a locking groove in at least one side of the sliding groove, and the side surface of the locking block is provided with a locking part corresponding to the locking groove; a movable groove is concavely formed in the sliding block facing the locking block, a first inclined surface is obliquely arranged on the groove wall of one side of the movable groove, a first abutting surface is arranged on the locking block corresponding to the first inclined surface, the first inclined surface and the first abutting surface are arranged in parallel, and a fixed column is fixedly connected between the first ejector plate and the mold core; the fixing column penetrates through the second ejector plate and does not interfere with the second ejector plate, a plurality of ejector pins are installed on the second ejector plate, and the upper ends of the ejector pins penetrate through the mold core.

Description

Technical Field

[0001] This utility model relates to the field of molds, and in particular to a secondary ejection mold. Background Technology

[0002] Currently, with the increasing use of electronic products, the use of plastic casings for electronic products is gaining popularity due to their lightweight nature, ease of application with various colors of paint, and aesthetic appeal. The injection molding technology for plastic casings has also been continuously improving, resulting in not only increased injection yield but also refined quality.

[0003] However, existing injection molds eject the product after injection molding, and then the sprue material connected to the product is removed manually or by equipment. For large-scale plastic products, this requires a significant increase in labor costs or the cost of purchasing equipment.

[0004] Therefore, there is an urgent need to develop an injection mold that can separate the product and the sprue material during product ejection. Utility Model Content

[0005] The purpose of this invention is to provide a secondary ejection mold that can separate the product and the sprue material while ejecting the product.

[0006] This utility model provides a secondary ejection mold, including a fixed mold base, a fixed block, and a fixed template arranged sequentially from top to bottom, as well as a first ejector plate and a second ejector plate movably disposed between the fixed mold base and the fixed template. The first ejector plate is located between the second ejector plate and the fixed template. A mold core is movably disposed on the fixed mold base. The secondary ejection mold further includes an ejection control mechanism, which includes a sliding seat with one end mounted on the second ejector plate and the other end extending towards the fixed template, a sliding block with one end mounted on the fixed template and the other end movable along the sliding groove of the sliding seat, and a sliding block elastically disposed on the first ejector plate that is connected to the sliding seat and the fixed template. The sliding block has a locking block that cooperates with it. The sliding seat has a locking groove recessed on at least one side of the sliding groove. The locking block has a locking part on its side corresponding to the locking groove. The sliding block has a movable groove recessed on its surface facing the locking block. The movable groove has a first inclined surface on its side wall away from the fixed template. The locking block has a first abutting surface corresponding to the first inclined surface. The first inclined surface and the first abutting surface are parallel to each other. A fixing post is fixedly connected between the first ejector plate and the mold core. The fixing post passes through the second ejector plate and does not interfere with it. The second ejector plate is equipped with a plurality of ejector pins, the upper ends of which penetrate the mold core.

[0007] When the product injection molding is completed, the locking part of the locking block is located in the locking groove. The second ejector plate, together with the first ejector plate, moves upward synchronously and ejects the mold core upward synchronously, separating the product from the sprue material, completing the first ejection action. When the first abutting surface of the locking block is squeezed by the first inclined surface, the locking part disengages from the locking groove. The first ejector plate and the mold core stop moving upward. The second ejector plate drives several ejector pins to continue moving upward, and several ejector pins protrude from the upper surface of the mold core and eject the product, completing the second ejection action.

[0008] Furthermore, a spring is provided between the locking block and the first ejector plate, and the locking block is connected to the first ejector plate by a limiting bolt.

[0009] Furthermore, the locking block has a receiving hole on the side facing the first ejector plate, and at least a portion of the spring is located in the receiving hole with its two ends abutting against the locking block and the first ejector plate, respectively.

[0010] Furthermore, the upper end of the sliding block is inclined to the locking block with a second inclined surface, and the locking block is provided with a second abutting surface corresponding to the second inclined surface. The second inclined surface and the second abutting surface are arranged parallel to each other. When the secondary ejection mold is assembled, the second inclined surface abuts against the second abutting surface, causing the locking block to move towards the first ejector plate. The first ejector plate and the locking block move downward along the sliding block and complete the reset.

[0011] Furthermore, the second ejector plate has mounting holes for mounting a plurality of ejector pins, and the lower ends of the plurality of ejector pins are correspondingly mounted in the mounting holes.

[0012] Furthermore, the second ejector plate is also provided with a clearance hole, and the fixing post is located in the clearance hole and does not interfere with the clearance hole.

[0013] Furthermore, the first ejector plate has a receiving space for accommodating the locking block, and the locking block can move elastically within the receiving space.

[0014] Furthermore, the second ejector plate has bolt holes, and the fixing bolt passes through the sliding seat and is screwed into the bolt holes.

[0015] Furthermore, a mold core is provided on the mold core, and a plurality of through holes are provided on the mold core, and the upper end of the ejector pin is movably disposed in the through holes.

[0016] Furthermore, a sensing unit is installed on the fixed template, and a triggering unit is installed on the first ejector plate. When the sensing unit senses the triggering unit, the secondary ejection mold is determined to have completed its reset.

[0017] The secondary ejection mold provided by this utility model separates the product from the sprue material during the first ejection and smoothly ejects the product from the injection space during the second ejection, and then the product is picked up manually or by a robot. Attached Figure Description

[0018] Figure 1 This is a perspective view of a secondary ejection mold according to the present invention.

[0019] Figure 2 for Figure 1 The top view of the secondary ejection mold shown.

[0020] Figure 3 for Figure 2 The cross-sectional view of the secondary ejection mold along the AA plane is shown.

[0021] Figure 4 This is a schematic diagram of part of the structure of the secondary ejection mold of this utility model.

[0022] Figure 5 This is a schematic diagram of part of the structure of the secondary ejection mold of this utility model.

[0023] Figure 6 for Figure 5 The diagram shows a partial exploded view of the secondary ejection mold structure.

[0024] Figure 7 for Figure 6 The diagram shows a three-dimensional view of part of the secondary ejection mold structure.

[0025] Figure 8 for Figure 2 The diagram shows a cross-sectional view of a portion of the secondary ejection mold along the BB surface.

[0026] Figure 9 This is an exploded perspective view of the ejection control mechanism of this utility model.

[0027] Figure 10 This is a perspective view of the locking block of this utility model. Detailed Implementation

[0028] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0029] The terms “first,” “second,” “third,” “fourth,” etc. (if present) in the specification and claims of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0030] The directional terms such as "up," "down," "left," "right," "front," "back," "top," and "bottom" (if present) used in the specification and claims of this utility model are defined according to the position of the structures in the drawings and the relative positions of the structures, and are only for the purpose of clarity and convenience in expressing the technical solution. It should be understood that the use of directional terms should not limit the scope of protection claimed in this application.

[0031] Please see Figures 1-10 This utility model discloses a secondary ejection mold, including a fixed mold base 60, a fixing block 20 and a fixed template 10 arranged sequentially from top to bottom, and a first ejector plate 30 and a second ejector plate 40 movably disposed between the fixed mold base 60 and the fixed template 10, wherein the first ejector plate 30 is located between the second ejector plate 40 and the fixed template 10. In this embodiment, the secondary ejection mold includes two fixing blocks 20, which are spaced apart, and the first ejector plate 30 and the second ejector plate 40 are located between the two fixing blocks 20.

[0032] Furthermore, a mold core 70 is movably disposed on the fixed mold base 60, and a mold core 80 is also disposed on the mold core 70.

[0033] The secondary ejection mold further includes an ejection control mechanism 50. The ejection control mechanism 50 includes a sliding seat 51 with one end mounted on the second ejector plate 40 and the other end extending towards the fixed mold plate 10; a sliding block 52 with one end mounted on the fixed mold plate 10 and the other end movable along the sliding groove 511 of the sliding seat 51; and a locking block 53 elastically disposed on the first ejector plate 30, cooperating with the sliding seat 51 and the sliding block 52. The sliding seat 51 has a locking groove 513 recessed on at least one side of the sliding groove 511. The side of the locking block 53 corresponding to the locking groove 513 has a laterally extending locking portion 531. The sliding block 52 faces the... The locking block 53 is recessed with a movable groove 521, and the side wall of the movable groove 521 away from the fixed template 10 is inclined with a first inclined surface 522. The locking block 53 is provided with a first abutting surface 533 corresponding to the first inclined surface 522. The first inclined surface 522 and the first abutting surface 533 are arranged parallel to each other. A fixing post 90 is fixedly connected between the first ejector plate 30 and the mold core 70 and / or the mold core 80. The fixing post 90 passes through the second ejector plate 40 and does not interfere with the second ejector plate 40. The second ejector plate 40 is equipped with a plurality of ejector pins 100. The upper end of the ejector pin 100 passes through the mold core 70 and / or the mold core 80.

[0034] In this embodiment, the upper end of the fixing post 90 has a square fixing end 91, which is installed on the mold core 70 and / or the mold core 80.

[0035] Please see Figure 4 Furthermore, the mold core 70 and / or the mold core 80 are provided with a fixing hole 82 for matching the fixing end 91, and the fixing end 91 is installed in the fixing hole 82.

[0036] In this embodiment, the fixed end 91 is square, which on the one hand prevents the mold core 70 and / or the mold core 80 from rotating, and on the other hand, the side length of the square of the fixed end 91 is smaller than the diameter of the circle, which allows the mold core 70 and / or the mold core 80 to slide downwards, and further fixes the mold core 70 and / or the mold core 80 to the upper end of the fixed post 90.

[0037] In this embodiment, when the product injection molding is completed and ejection is required, the sliding seat 51 drives the second ejector plate 40 to move upward. At this time, the locking part 531 of the locking block 53 is located in the locking groove 513. The second ejector plate 40, together with the first ejector plate 30, moves upward synchronously and ejects the mold core 70 and the mold core 80 upward synchronously, protruding from the fixed mold base 60 to separate the product from the sprue material, completing the first ejection action. Then, the sliding seat 51 drives the second ejector plate 40 to continue... As the locking block 53 continues to move upward, when the first abutting surface 533 of the locking block 53 moves away from the sliding block 52 under the pressure of the first inclined surface 522, causing the locking part 531 to disengage from the locking groove 513, the first ejector plate 30, the mold core 70, and the mold core 80 stop moving upward. The second ejector plate 40 then drives a number of ejector pins 100 to continue moving upward, and the number of ejector pins protrudes from the upper surface of the mold core 70 and / or the mold core 80 and ejects the product, completing the second ejection action.

[0038] In this embodiment, the product is separated from the sprue material by the first ejection, and the product is detached from the mold core 70 and / or the mold core 80 by the second ejection, thereby successfully completing the product demolding.

[0039] Please see Figure 3 , Figure 6 , Figure 9 and Figure 10 A spring 54 is provided between the locking block 53 and the first ejector plate 30, and the locking block 53 is connected to the first ejector plate 30 by a limiting bolt 55. The locking block 53 has a receiving hole 532 on the side facing the first ejector plate 30, and at least a portion of the spring 54 is located within the receiving hole 532, with both ends abutting against the locking block 53 and the first ejector plate 30 respectively. When the locking block 53 is in an uncompressed state, the spring 54 abuts against the locking block 53, causing the locking block 53 to be located away from the first ejector plate 30; when the locking block 53 is compressed by the first inclined surface 522, the locking block 53 compresses the spring 54 and moves towards the first ejector plate 30.

[0040] In this embodiment, the limiting bolt 55 has a columnar body portion, a limiting portion with a diameter larger than the body portion located at one end of the body portion, and a threaded connecting portion located at the other end of the body portion. The receiving hole 532 is provided through the locking block 53, the spring 54 is sleeved on the outer periphery of the body portion, the limiting bolt 55 passes through the receiving hole 532 and the limiting portion restricts the locking block 53 from disengaging from the first ejector plate 30, and the connecting portion is threadedly connected to the first ejector plate 30.

[0041] Please see Figure 9 and Figure 10 The upper end of the sliding block 52 is inclined to the locking block 53 and has a second inclined surface 523. The locking block 53 is provided with a second abutting surface 534 corresponding to the second inclined surface 523. The second inclined surface 523 and the second abutting surface 534 are arranged parallel to each other. When the secondary ejection mold is assembled, the second inclined surface 523 abuts against the second abutting surface 534, causing the locking block 53 to move toward the first ejector plate 30. The first ejector plate 30 and the locking block 53 move downward along the sliding block 52 and complete the reset.

[0042] Please see Figure 6 and Figure 7 The second ejector plate 40 has mounting holes 42 for mounting a plurality of ejector pins 100. The lower ends of the plurality of ejector pins 100 are correspondingly installed in the mounting holes 42. The second ejector plate 40 also has a through hole 41. The fixing post 90 is located in the through hole 41 and does not interfere with the through hole 41.

[0043] Please see Figure 7 The first ejector plate 30 has a receiving space 31 for accommodating the locking block 53. The locking block 53 moves elastically within the receiving space 31 under the action of the spring 54. When the locking block 53 is not in a compressed state, at least a portion of the locking block 53 protrudes out of the receiving space 31.

[0044] Please continue reading. Figure 7 The second ejector plate 40 has a bolt hole 43. The fixing bolt passes through the sliding seat 51 and is screwed into the bolt hole 43 to fix the sliding seat 51 on the second ejector plate 40.

[0045] The mold core 80 and / or the mold inlet 70 are also provided with a plurality of through holes 81. The upper end of the ejector pin 100 is movably disposed in the through holes 81. When ejecting for the second time, the ejector pin 100 extends upward through the through holes 81 to eject the product.

[0046] Please see Figure 1 and Figure 5A sensing unit 120 is installed on the fixed template 10, and a trigger unit 32 is installed on the first ejector plate 30. When the sensing unit 120 senses the trigger unit 32, the secondary ejection mold is determined to have completed reset. In this embodiment, the trigger unit 32 is a trigger post, which is a mechanical trigger. That is, when the trigger post abuts against the trigger end of the mechanical trigger, the mechanical trigger is turned on and transmits the trigger data to the computer. The computer determines that the reset is complete upon receiving the trigger data, and can then begin injecting molten plastic into the injection cavity of the secondary ejection mold. When the computer does not receive the trigger data, it determines that the secondary ejection mold is in the open state, and therefore, injecting molten plastic into the injection cavity is prohibited.

[0047] Please see Figure 3 and Figure 4 In this embodiment, the secondary ejection mold includes two ejection control mechanisms 50, which are located on opposite sides of the first ejector plate 30 and the second ejector plate 40. This effectively ensures that the first ejector plate 30 and the second ejector plate 40 move in unison during the first and second ejections, ensuring smooth ejection and further guaranteeing the yield of the ejected products.

[0048] In this embodiment, to further ensure the vertical movement of the first ejector plate 30 and the second ejector plate 40, a guide post 110 is provided through the fixed template 10, the first ejector plate 30, and the second ejector plate 40. Furthermore, a guide sleeve 130 is also provided through the first ejector plate 30 and the fixed template 10. The upper end of the guide sleeve 130 is fixed to the first ejector plate 30, and the lower end of the guide post 110 is fixed to the lower end of the guide sleeve 130. The upper end of the guide post 110 extends upwards from the guide sleeve 130 and passes through the second ejector plate 40. The lower end of the guide sleeve 130 is movably disposed within the fixed template 10, and the upper end of the guide post 110 is movably disposed within the second ejector plate 40. The second ejector plate 40 does not detach from the upper end of the guide post 110, and the fixed template 10 does not detach from the lower end of the guide sleeve 130.

[0049] The secondary ejection mold provided by this utility model separates the product from the sprue material during the first ejection and smoothly ejects the product from the injection space during the second ejection, and then the product is picked up manually or by a robot.

[0050] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A secondary ejection mold characterized by: The secondary ejection mold comprises a fixed die seat, a fixed block and a fixed die plate arranged in sequence from top to bottom, and a first ejector plate and a second ejector plate movably arranged between the fixed die seat and the fixed die plate, the first ejector plate is located between the second ejector plate and the fixed die plate, a mold core is movably arranged on the fixed die seat, the secondary ejection mold further comprises an ejection control mechanism, the ejection control mechanism comprises a sliding seat installed at one end on the second ejector plate and extending in the direction of the fixed die plate, a sliding block installed at one end on the fixed die plate and movable along a sliding groove of the sliding seat, and a locking block movably arranged on the first ejector plate and matched with the sliding seat and the sliding block, at least one side of the sliding groove of the sliding seat is recessed with a locking groove, a side surface of the locking block is provided with a locking portion corresponding to the locking groove, a side surface of the sliding block facing the locking block is recessed with a movable groove, a groove wall of the movable groove away from the fixed die plate is provided with a first inclined surface, the locking block is provided with a first abutting surface corresponding to the first inclined surface, and the first inclined surface and the first abutting surface are arranged in parallel, a fixed column is fixedly connected between the first ejector plate and the mold core, the fixed column passes through the second ejector plate and does not interfere with the second ejector plate, the second ejector plate is installed with a plurality of ejector pins, the upper end of the ejector pin is arranged through the mold core, When the product injection is completed, the locking portion of the locking block is located in the locking groove, the second ejector plate moves upward synchronously with the first ejector plate and synchronously ejects the mold core upward to separate the product from the nozzle material, and the first ejection action is completed; when the first abutting surface of the locking block is extruded by the first inclined surface, the locking portion is separated from the locking groove, the first ejector plate and the mold core stop moving upward, the second ejector plate drives the plurality of ejector pins to continue moving upward, and the plurality of ejector pins protrude out of the upper surface of the mold core and eject the product, and the second ejection action is completed.

2. The secondary ejection mold according to claim 1, wherein: The locking block and the first ejector plate are provided with a spring, and the locking block is connected to the first ejector plate by a limiting bolt.

3. The secondary ejection mold according to claim 2, wherein: The side of the locking block facing the first ejector plate is provided with a receiving hole, and at least part of the spring is located in the receiving hole and abuts against the locking block and the first ejector plate at both ends.

4. The secondary ejection mold according to claim 1, wherein: The upper end of the sliding block facing the locking block is provided with a second inclined surface, the locking block is provided with a second abutting surface corresponding to the second inclined surface, and the second inclined surface and the second abutting surface are arranged in parallel, when the secondary ejection mold is assembled, the second inclined surface abuts against the second abutting surface to move the locking block in the direction of the first ejector plate, and the first ejector plate and the locking block move downward along the sliding block and complete resetting.

5. The secondary ejection mold according to claim 1, wherein: The second ejector plate is provided with a mounting hole for mounting the plurality of ejector pins, and the lower end of the plurality of ejector pins is mounted in the mounting hole.

6. The secondary ejection mold according to claim 1, wherein: The second ejector plate is further provided with an avoiding hole, and the fixed column is located in the avoiding hole and does not interfere with the avoiding hole.

7. The secondary ejection mold according to claim 1, wherein: The first ejector pin plate is provided with a receiving space for receiving the locking block, and the locking block is elastically movable in the receiving space.

8. The secondary ejection mold of claim 1, wherein: The second ejector pin plate is provided with a bolt hole, and a fixing bolt is screwed in the bolt hole through the sliding seat.

9. The secondary ejection mold of claim 1, wherein: The mold core is provided on the mold pin, and a plurality of through holes are formed in the mold core, and the upper end of the ejector pin is movably arranged in the through hole.

10. The secondary ejection mold of claim 1, wherein: The second ejector pin plate is provided with a bolt hole, and a fixing bolt is screwed in the bolt hole through the sliding seat. The mold core is provided on the mold pin, and a plurality of through holes are formed in the mold core, and the upper end of the ejector pin is movably arranged in the through hole. The second ejector pin plate is provided with a bolt hole, and a fixing bolt is screwed in the bolt hole through the sliding seat. The mold core is provided on the mold pin, and a plurality of through holes are formed in the mold core, and the upper end of the ejector pin is movably arranged in the through hole. The second ejector pin plate is provided with a bolt hole, and a fixing bolt is screwed in the bolt hole through the sliding seat. The mold core is provided on the mold pin, and a plurality of through holes are formed in the mold core, and the upper end of the ejector pin is movably arranged in the through hole. The second ejector pin plate is provided with a bolt hole, and a fixing bolt is screwed in the bolt hole through the sliding seat. The mold core is provided on the mold pin, and a plurality of through holes are formed in the mold

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