Reset device and mold

Abstract

The utility model discloses a resetting device and a mold, the resetting device comprises a resetting rod and a limiting assembly, and the resetting rod is used for being fixed on a fixed mold plate of a fixed mold in the mold; the limiting assembly is used for being fixed to an ejection mechanism of a movable mold in a mold. A slot is formed in the end, close to a fixed mold, of the limiting assembly. When the mold is opened, the reset rod is driven by the fixed mold to be separated from the inserting groove, and the ejection mechanism can push the limiting assembly to move towards one side of the fixed mold. When the mold is closed, the reset rod is driven by the fixed mold to be inserted into the inserting groove, the reset rod can push the ejection mechanism to move towards the side away from the fixed mold through the limiting assembly so as to reset the ejection mechanism, the situation that an ejector pin in the ejection mechanism does not return and crashes the slide seat or the fixed mold is prevented, the ejection mechanism returns firstly, and finally the mold closing action is completed.

Description

Technical Field

[0001] The utility model relates to the technical field of die structures, and particularly relates to a reset device and a die. Background Art

[0002] A die is a tool for producing plastic products. It consists of a fixed die and a moving die. There is a product cavity in this combination. During injection molding, the die is clamped on an injection molding machine, molten plastic is injected into the product cavity, and it cools and solidifies in the product cavity. Then the fixed die and the moving die are separated, and the product is ejected from the product cavity by the ejection mechanism of the moving die and leaves the die. Finally, the die closes for the next injection molding. The whole injection molding process is carried out cyclically. The ejection mechanism generally has multiple springs, and the springs are used for the ejection mechanism to reset.

[0003] However, during long-term use, the springs are prone to getting stuck or losing their elasticity, resulting in the ejection mechanism being unable to reset normally. In severe cases, the die will be damaged when the die is closed. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a reset device and a die to solve the technical problem that during long-term use of the springs in the ejection mechanism of the existing die, the springs are prone to getting stuck or losing their elasticity, resulting in the ejection mechanism being unable to reset normally, and in severe cases, the die will be damaged when the die is closed.

[0005] The utility model is implemented as follows:

[0006] The utility model provides a reset device, including:

[0007] A reset rod, which is used to be fixed on the fixed template of the fixed die in the die;

[0008] A limit component, which is used to be fixed on the ejection mechanism of the moving die in the die. One end of the limit component close to the fixed die is provided with a slot;

[0009] When the die is opened, the reset rod is separated from the slot under the drive of the fixed die, and the ejection mechanism can push the limit component to move towards the fixed die side; when the die is closed, the reset rod is inserted into the slot under the drive of the fixed die, and the reset rod can push the ejection mechanism to move away from the fixed die side through the limit component to reset the ejection mechanism.

[0010] Furthermore, the reset device further includes a fixing block for being fixed on the moving template in the moving die. The fixing block and the moving template can enclose a through-set limiting hole, and the limiting component is slidably inserted into the limiting hole. When the mold is opened, the limiting component can move towards the fixed die side in the limiting hole. When the mold is closed, the reset rod can be inserted into the slot through the limiting hole.

[0011] Furthermore, the limiting component includes a positioning block, an elastic member, and two ejector rods arranged at intervals. The positioning block is fixed on the ejecting mechanism. One ends of the two ejector rods are rotatably installed on the positioning block, and the other ends of the two ejector rods are inserted into the limiting hole. Two ends of the elastic member are respectively connected to the two ejector rods, and the elastic member and the two ejector rods enclose to form the slot.

[0012] Furthermore, the limiting component further includes two first pins. The ejector rod includes a first branch rod and a second branch rod connected to the first branch rod. The width of the first branch rod is greater than that of the second branch rod. The first branch rod is rotatably installed on the positioning block through the first pin. The two second branch rods are both inserted into the limiting hole, and two ends of the elastic member are respectively connected to the two first branch rods.

[0013] Furthermore, the positioning block is provided with a receiving hole in a penetrating manner, and the first branch rod is rotatably installed on the inner wall of the receiving hole through the first pin.

[0014] Furthermore, the fixing block is provided with a concave cavity in a penetrating manner, and the inner wall of the concave cavity and the moving template can enclose to form the limiting hole.

[0015] Furthermore, the reset device further includes two second pins both for being fixed on the moving template. The fixing block is further provided with two pin holes, and the two second pins are respectively inserted into the two pin holes. The concave cavity is located between the two pin holes.

[0016] Furthermore, the fixing block is further provided with at least one avoiding groove for avoiding the inclined rod in the fixed die.

[0017] Furthermore, the reset rod includes an inserting rod and a convex block for being clamped with the fixed template. The convex block protrudes on one side surface of the inserting rod, and the inserting rod can be inserted into the slot.

[0018] The present utility model also discloses a mold, including the reset device as described above.

[0019] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0020] The present utility model is provided with a reset device in the mold. The reset rod in the reset device is used to be fixed on the fixed template of the fixed mold. The limit component in the reset device is used to be fixed on the ejector mechanism of the moving mold. The limit component is provided with a slot. When the mold is opened, the reset device can prevent the ejector mechanism from moving towards the fixed mold side. When it is opened to a certain stroke, the reset rod is driven by the fixed mold and disengages from the slot, and then the ejector mechanism moves. At the same time, the ejector mechanism pushes the limit component towards the fixed mold side. When the mold is closed, the reset rod needs to be inserted into the slot under the drive of the fixed mold. The reset rod can push the ejector mechanism to reset through the limit component, preventing the ejector pin in the ejector mechanism from not retracting and damaging the slide block seat or the fixed mold, so that the ejector mechanism retracts first, and finally the mold closing action is completed. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic structural diagram of the reset device provided by an embodiment of the present utility model;

[0022] Figure 2 is Figure 1 an exploded view of;

[0023] Figure 3 is a schematic structural diagram of the limit component provided by an embodiment of the present utility model;

[0024] Figure 4 is Figure 3 an exploded view of;

[0025] Figure 5 is a schematic structural diagram of the fixing block provided by an embodiment of the present utility model;

[0026] Figure 6 is a schematic structural diagram of the reset rod provided by an embodiment of the present utility model;

[0027] Figure 7 is a schematic structural diagram of the mold when it is closed provided by an embodiment of the present utility model;

[0028] Figure 8 is a schematic structural diagram of the mold when it is opened provided by an embodiment of the present utility model;

[0029] Figure 9 is a schematic structural diagram of the mold after removing the reset device provided by an embodiment of the present utility model.

[0030] In the figure:

[0031] 10. Reset device; 11. First fastener; 12. Second pin; 13. Second fastener; 14. Third fastener; 20. Reset rod; 21. Insert rod; 211. Third through hole; 22. Bump; 30. Limit component; 31. Slot; 32. Positioning block; 321. Storage hole; 322. Positioning hole; 323. First through hole; 324. Protrusion; 33. Elastic member; 34. Thrust rod; 341. First support rod; 3411. First card slot; 342. Second support rod; 35. First pin; 40. Fixed mold; 41. Fixed template; 411. Third card slot; 412. Third threaded hole; 42. Diagonal rod; 50. Movable mold; 51. Ejection mechanism; 511. First threaded hole; 512. Second card slot; 513. First top plate; 514. Second top plate; 515. Ejector pin; 52. Movable template; 521. Embedded groove; 522. Second threaded hole; 53. Bottom plate; 54. Movable mold core; 55. Square iron; 56. Slide block seat; 561. Oblique hole; 57. Through cavity; 60. Fixed block; 61. Concave cavity; 62. Pin hole; 63. Second through hole; 64. Avoidance groove; 70. Limiting hole. Detailed implementation manners

[0032] Next, in combination with the accompanying drawings and specific implementation manners, the present utility model will be further described. It should be noted that, on the premise of no conflict, any combination of the following-described embodiments or technical features can form a new embodiment.

[0033] Please refer to Figures 1 to 4 and Figures 7 to 9 As shown, an embodiment of the present utility model discloses a reset device 10. The reset device 10 includes a reset rod 20 and a limit component 30. The reset rod 20 is used to be fixed on the fixed template 41 of the fixed mold 40 in the mold. The reset rod 20 can run together with the fixed mold 40. The limit component 30 is used to be fixed on the ejection mechanism 51 of the movable mold 50 in the mold. A slot 31 is provided at one end of the limit component 30 close to the fixed mold 40. The limit component 30 can run together with the ejection mechanism 51. The ejection mechanism 51 is driven by a top rod in an injection molding machine to eject a product.

[0034] When the mold is opened, the fixed mold 40 is separated from the movable mold 50. The reset rod 20 is driven by the fixed mold 40 to disengage from the slot 31, and the reset rod 20 is separated from the limit component 30. Subsequently, the ejection mechanism 51 operates to eject the molded product. When the ejection mechanism 51 ejects the product, it can simultaneously push the limit component 30 to move towards the fixed mold 40 side; when the mold is closed, the fixed mold 40 will be engaged with the movable mold 50. The reset rod 20 is driven by the fixed mold 40 to be inserted into the slot 31. The reset rod 20 can push the ejection mechanism 51 to move away from the fixed mold 40 side through the limit component 30 to reset the ejection mechanism 51, preventing the ejection mechanism 51 from not retracting and damaging the movable seat 56 in the fixed mold 40 or the movable mold 50, allowing the ejection mechanism 51 to retract first, and finally the closing action is completed.

[0035] The reset device 10 further includes a fixing block 60 for being fixed on the movable template 52 in the movable mold 50. The fixing block 60 moves together with the movable template 52. The fixing block 60 and the movable template 52 can enclose a vertically penetrating limiting hole 70. The limit component 30 is slidably inserted into the limiting hole 70. When the mold is opened, the limit component 30 can move towards the fixed mold 40 side in the limiting hole 70 driven by the ejection mechanism 51. When the mold is closed, the reset rod 20 can be inserted into the slot 31 through the limiting hole 70 driven by the fixed mold 40 to reset the ejection mechanism 51 and prevent damage to the mold.

[0036] In this embodiment, the limit component 30 includes a positioning block 32, an elastic member 33, and two spaced ejector rods 34. The positioning block 32 is fixed on the ejection mechanism 51. One ends of the two ejector rods 34 are rotatably installed on the positioning block 32. The other ends of the two ejector rods 34 are inserted into the limiting hole 70. Two ends of the elastic member 33 are respectively connected to the two ejector rods 34. The elastic member 33 is located between the positioning block 32 and the fixing block 60. The elastic member 33 and the two ejector rods 34 enclose the slot 31. At this time, the inner diameter of the slot 31 gradually increases from the end close to the positioning block 32 towards the end close to the fixing block 60. The reset rod 20 will not abut against the elastic member 33 during the insertion process. The elastic member 33 is a spring.

[0037] The limit component 30 further includes two first pins 35. The ejector rod 34 includes a first branch rod 341 and a second branch rod 342 connected to the first branch rod 341. The width of the first branch rod 341 is greater than the width of the second branch rod 342. The first branch rod 341 is rotatably installed on the positioning block 32 through the first pin 35. The two second branch rods 342 are both inserted into the limiting hole 70 to limit the opening angle of the two ejector rods 34. Two ends of the elastic member 33 are respectively connected to the two first branch rods 341. The limit component 30 will not disengage from the limiting hole 70 during the up and down movement.

[0038] In some embodiments, first slots 3411 are provided on the sides of the two first support rods 341 , and two ends of the elastic member 33 are respectively engaged in the two first slots 3411 , so that the elastic member 33 is installed between the two top rods 34 .

[0039] The positioning block 32 is penetrated by a receiving hole 321 and four spaced positioning holes 322. The receiving hole 321 vertically penetrates the positioning block 32. The positioning hole 322 extends from the inner wall of the receiving hole 321 to the outer wall of the positioning block 32. The two ends of the first pin 35 are respectively fixed in two oppositely arranged positioning holes 322. The first support rod 341 is connected to the middle part of the first pin 35. The first support rod 341 is rotatably installed on the inner wall of the receiving hole 321 through the first pin 35 to further limit the opening angle of the two top rods 34 and improve the installation strength of the two top rods 34.

[0040] In some embodiments, the reset device 10 also includes two first fasteners 11, the positioning block 32 is also penetrated by two first through holes 323, the storage hole 321 and the positioning hole 322 are both located between the two first through holes 323, the ejection mechanism 51 is provided with two first threaded holes 511, the first fastener 11 passes through the first through hole 323 and is connected to the first threaded hole 511, thereby fixing the positioning block 32 on the ejection mechanism 51, and the first fastener 11 is a screw.

[0041] In some embodiments, the positioning block 32 is provided with a protruding portion 324 , the ejection mechanism 51 is provided with a second slot 512 , and the protruding portion 324 is engaged in the second slot 512 to achieve initial positioning of the positioning block 32 .

[0042] Please read further Figure 2 ,as well as Figures 5 to 9 In this embodiment, the fixed block 60 is penetrated by a concave cavity 61 with a "U"-shaped cross-section. The concave cavity 61 is located on the side of the fixed block 60 facing the movable template 52. The inner wall of the concave cavity 61 can be enclosed with the movable template 52 to form the limiting hole 70, so that the limiting assembly 30 can be slidably inserted into the limiting hole 70, and the reset rod 20 and the limiting assembly 30 are positioned at the same time.

[0043] The reset device 10 also includes two second pins 12, both used to be fixed on the movable template 52. The movable template 52 is provided with two embedding grooves 521. The fixed block 60 is also provided with two pin holes 62. One ends of the two second pins 12 are respectively installed in the two embedding grooves 521, and the other ends of the two second pins 12 are respectively inserted into the corresponding two pin holes 62 to preliminarily position the fixed block 60. The concave cavity 61 is located between the two pin holes 62.

[0044] In some embodiments, the reset device 10 further includes four second fasteners 13. The fixed block 60 is further provided with four second through holes 63, and the moving template 52 is further provided with four second threaded holes 522. The second fasteners 13 pass through the corresponding second through holes 63 and are threadedly connected to the corresponding second threaded holes 522 to fix the fixed block 60 to the moving die 50. The second fasteners 13 are screws.

[0045] The fixed block 60 is further provided with at least one avoidance groove 64. The avoidance groove 64 is provided on the side of the fixed block 60 close to the moving die 50. The avoidance groove 64 is used to avoid the inclined rod 42 in the fixed die 40 so that the inclined rod 42 can be smoothly inserted into the moving die 50.

[0046] The reset rod 20 includes an insertion rod 21 and a convex block 22. The convex block 22 protrudes from one side surface of the insertion rod 21. The convex block 22 has a square structure. The fixed template 41 is provided with a third card slot 411. The convex block 22 is used to engage with the third card slot 411 in the fixed template 41 to prevent the reset rod 20 from rotating during use. The insertion rod 21 can be inserted into the slot 31.

[0047] In some embodiments, the reset device 10 further includes two third fasteners 14. The insertion rod 21 is provided with two third through holes 211. The fixed template 41 is further provided with two third threaded holes 412. The third fasteners 14 pass through the third through holes 211 and are connected to the third threaded holes 412 to fix the reset rod 20 to the fixed template 41. The third fasteners 14 are screws.

[0048] The present utility model also discloses a mold, which includes a fixed mold 40, a movable mold 50, and at least one reset device 10 as described above. The fixed mold 40 includes a fixed template 41, a fixed mold core, and a plurality of inclined rods 42. The fixed mold core and the inclined rods 42 are both fixed on one surface of the fixed template 41. The movable mold 50 includes an ejection mechanism 51, a movable template 52, a bottom plate 53, a movable mold core 54, two square irons 55, and a plurality of slide seats 56. The two ends of the square iron 55 are respectively connected to the bottom plate 53 and the movable template 52. The movable mold core 54 and the slide seats 56 are both installed on the surface of the movable template 52 away from the square iron 55. The slide seats 56 slide on the movable template 52, and the slide seats 56 are provided with inclined holes 561. The fixed template 41 is also called the A plate, and the movable template 52 is also called the B plate. When the mold is closed, each inclined rod 42 is respectively inserted into each inclined hole 561. The movable mold core 54, the fixed mold core, and a plurality of slide seats 56 enclose to form a product cavity. The movable template 52, the bottom plate 53, and the two square irons 55 enclose to form a through cavity 57. One end of the ejection mechanism 51 is located in the through cavity 57, and the other end passes through the movable template 52 and is located in the product cavity, so as to eject the formed product. The reset rod 20 is fixed on the fixed template 41, and the reset rod 20 can operate together with the fixed mold 40. The limit assembly 30 is fixed on the ejection mechanism 51. The reset device 10 can solve major risks such as the ejection mechanism 51 hitting the slide seat 56 or the ejection mechanism 51 hitting the fixed mold 40, and can enable the mold to be mass-produced smoothly.

[0049] The ejection mechanism 51 includes a first top plate 513, a second top plate 514, a plurality of guide rods, and a plurality of ejector pins 515. The two ends of the guide rods are respectively fixed on the inner walls on both sides of the through cavity 57. The first top plate 513 and the second top plate 514 are both located in the through cavity 57 and are both slidably installed on the guide rods. The first top plate 513 is located between the second top plate 514 and the bottom plate 53. One end of the ejector pin 515 is installed between the first top plate 513 and the second top plate 514, and the other end of the ejector pin 515 sequentially passes through the second top plate 514, the movable template 52, and the movable mold core 54 and is located in the product cavity. The positioning block 32 in the limit assembly 30 is fixed on the second top plate 514.

[0050] Working principle of the mold:

[0051] When the mold is opened, the fixed mold 40 is separated from the movable mold 50. Each inclined rod 42 is respectively separated from each inclined hole 561. Each slide seat 56 moves away from the movable mold core 54 side under the drive of each inclined rod 42. The reset rod 20 is separated from the slot 31 under the drive of the fixed mold 40, and the reset rod 20 is separated from the limit assembly 30. Subsequently, under the thrust of the injection molding machine ejector rod, the ejection mechanism 51 acts to eject the formed product. When the ejection mechanism 51 ejects the product, it can simultaneously push the limit assembly 30 to move towards the fixed mold 40 side through the limiting hole 70;

[0052] When the mold is closed, the stationary mold 40 is engaged with the moving mold 50. Each inclined rod 42 is respectively inserted into each inclined hole 561. The reset rod 20 is inserted into the slot 31 under the drive of the stationary mold 40. The reset rod 20 can push the ejection mechanism 51 to move away from the stationary mold 40 through the limit assembly 30 to reset the ejection mechanism 51. After that, each slider seat 56 moves toward the side close to the moving mold core 54 under the drive of each inclined rod 42. The moving mold core 54, the stationary mold core and the plurality of slider seats 56 enclose a product cavity. The slider seats 56 are finally closed to prevent the ejector pin 515 in the ejection mechanism 51 from not retracting and damaging the slider seat 56 or the stationary mold 40. Finally, the closing action is completed.

[0053] In summary, the present utility model is provided with a reset device 10 in the mold. The reset rod 20 in the reset device 10 is used to be fixed on the stationary template 41 of the stationary mold 40. The limit assembly 30 in the reset device 10 is used to be fixed on the ejection mechanism 51 of the moving mold 50. The limit assembly 30 is provided with a slot 31. When the mold is opened, the reset device 10 can prevent the ejection mechanism 51 from moving toward the stationary mold 40. When the mold is opened to a certain stroke, the reset rod 20 is disengaged from the slot 31 under the drive of the stationary mold 40, and then the ejection mechanism 51 runs. The ejection mechanism 51 simultaneously pushes the limit assembly 30 to move toward the stationary mold 40. When the mold is closed, the reset rod 20 needs to be inserted into the slot 31 under the drive of the stationary mold 40. The reset rod 20 can push the ejection mechanism 51 to reset through the limit assembly 30, preventing the ejector pin 515 in the ejection mechanism 51 from not retracting and damaging the slider seat 56 or the stationary mold 40, allowing the ejection mechanism 51 to retract first, and finally the closing action is completed.

[0054] The above embodiments are only the preferred embodiments of the present utility model, and cannot be used to limit the scope of protection of the present utility model. Any non-substantial changes and substitutions made by those skilled in the art based on the present utility model belong to the scope of protection required by the present utility model.

Claims

1. A reset device, characterized in that, Comprising: A reset rod, which is used to be fixed on the fixed template of the stationary mold in the mold; A limit component, which is used to be fixed on the ejector mechanism of the moving mold in the mold, and a slot is provided at one end of the limit component close to the stationary mold; When the mold is opened, the reset rod is disengaged from the slot under the drive of the stationary mold, and the ejector mechanism can push the limit component to move towards the stationary mold side; when the mold is closed, the reset rod is inserted into the slot under the drive of the stationary mold, and the reset rod can push the ejector mechanism to move away from the stationary mold side through the limit component to reset the ejector mechanism.

2. The reset device according to claim 1, characterized in that, The reset device further includes a fixed block that is used to be fixed on the moving template of the moving mold. The fixed block and the moving template can enclose a through-set limiting hole. The limit component is slidably inserted into the limiting hole. When the mold is opened, the limit component can move towards the stationary mold side in the limiting hole. When the mold is closed, the reset rod can be inserted into the slot through the limiting hole.

3. The reset device according to claim 2, wherein The limit component includes a positioning block, an elastic member, and two spaced-apart ejector rods. The positioning block is fixed on the ejector mechanism. One ends of the two ejector rods are rotatably mounted on the positioning block, and the other ends of the two ejector rods are inserted into the limiting hole. Two ends of the elastic member are respectively connected to the two ejector rods, and the elastic member and the two ejector rods enclose to form the slot.

4. The reset device according to claim 3, characterized in that, The limit component further includes two first pins. The ejector rod includes a first branch rod and a second branch rod connected to the first branch rod. The width of the first branch rod is greater than the width of the second branch rod. The first branch rod is rotatably mounted on the positioning block through the first pin. The two second branch rods are inserted into the limiting hole, and two ends of the elastic member are respectively connected to the two first branch rods.

5. The reset device according to claim 4, characterized in that, The positioning block is provided with a receiving hole in a penetrating manner, and the first branch rod is rotatably mounted on the inner wall of the receiving hole through the first pin.

6. The reset device according to claim 2, characterized in that, The fixed block is provided with a concave cavity in a penetrating manner, and the inner wall of the concave cavity and the moving template can enclose to form the limiting hole.

7. The reset device according to claim 6, characterized in that The reset device further includes two second pins that are both used to be fixed on the moving template. The fixed block is further provided with two pin holes, and the two second pins are respectively inserted into the two pin holes, and the concave cavity is located between the two pin holes.

8. The reset device according to claim 2, wherein, The fixed block is further provided with at least one avoidance groove for avoiding the inclined rod in the stationary mold.

9. The reset device according to claim 1, characterized in that, The reset rod includes an insertion rod and a convex block for clamping with the fixed template. The convex block protrudes from one side surface of the insertion rod, and the insertion rod can be inserted into the slot.

10. A mold, characterized in that, Comprising the reset device according to any one of claims 1-9.

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