A mold structure for delaying the reset of a nylon rubber plug

Abstract

The utility model relates to the field of injection mold, the utility model discloses a kind of mold structure of nylon rubber plug delayed reset, including fixed plate, water gap plate, A plate, B plate, backing plate and delayed reset component, delayed reset component includes: nylon rubber plug, connecting rod, connecting protective sleeve, support rod and limit block, A plate is provided with first through-hole and second through-hole, connecting rod is slidably arranged in first through-hole, connecting rod and water gap plate abut, connecting protective sleeve is slidably arranged in second through-hole, connecting protective sleeve is fixed in connecting rod, B plate is provided with third through-hole, support rod is slidably arranged in third through-hole inside, support rod is arranged in backing plate, nylon rubber plug is arranged in the other end of support rod, limit block is arranged in A plate, the end face one end of connecting rod away from B plate is provided with step groove, and the movement path of the groove bottom of limit block one end is set in step groove;When clamping, nylon rubber plug is arranged in connecting protective sleeve with interference fit. A plate and B plate are reset first, and A plate and water gap plate are reset later.

Description

Technical Field

[0001] This utility model relates to the field of injection molds, and in particular to a mold structure for delayed reset of nylon rubber plugs. Background Technology

[0002] In a fine-gate mold structure, a standard nylon plug is typically mounted on plate B. During mold closing, the nylon plug on plate B prevents plates A and B from resetting, causing plates A and the sprue plate to reset first. In many cases, it is necessary to delay the mold closing function of the nylon plug to ensure that plates A and B reset first, followed by plates A and the sprue plate. Utility Model Content

[0003] The purpose of this utility model is to provide a mold structure for delayed reset of nylon rubber plugs. The mold closing function of the nylon rubber plugs is delayed, which can easily realize the function of resetting A plate and B plate first and resetting A plate and sprue plate later, and avoid using a large number of redundant mold structures such as fasteners.

[0004] To achieve the above objectives, this utility model adopts the following technical solution: a mold structure for delayed reset of nylon rubber stoppers, comprising a fixing plate, a sprue plate, an A plate, a B plate, a support plate, and a delayed reset assembly, wherein the fixing plate, the sprue plate, the A plate, the B plate, and the support plate are stacked sequentially, and the delayed reset assembly comprises: Nylon rubber stoppers; A connecting rod is provided. A first through hole is provided on the surface of plate A away from plate B. A second through hole is provided on the parting surface of plate A. The connecting rod is slidably disposed in the first through hole and abuts against the sprue plate. A connecting protective sleeve is slidably disposed inside the second through hole. One end of the connecting protective sleeve is fixed to the connecting rod, and the other end of the connecting protective sleeve is provided with a receiving groove. The outer diameter of the nylon rubber plug is larger than the diameter of the receiving groove. The support rod has a third through hole in plate B, and the support rod is slidably disposed inside the third through hole. One end of the support rod is detachably disposed on the support plate, and the nylon rubber plug is disposed at the other end of the support rod. A limiting block is provided on the surface of plate A away from plate B. A stepped groove is provided at one end of the connecting rod away from plate B. One end of the limiting block is located on the movement path at the bottom of the stepped groove. During mold closing, the nylon plug is interference-fitted into the receiving groove.

[0005] Preferably, the length of the connecting rod is greater than the depth of the first through hole, and the total length of the connecting rod and the connecting protective sleeve is equal to the thickness of plate A.

[0006] Preferably, the connecting protective sleeve is a rigid metal sleeve or a nylon sleeve, wherein the rigid metal sleeve is clearance-fitted with the second through hole, and the nylon sleeve is interference-fitted with the second through hole.

[0007] Preferably, the end of the connecting rod near plate B abuts against the end of the connecting protective sleeve away from plate B, and the connecting rod and the connecting protective sleeve are detachably connected by a connecting element.

[0008] Preferably, the nylon plug is detachably mounted on the support rod by a fastening screw, the nylon plug having a central hole through which the fastening screw passes, and the fastening screw being threadedly connected to the middle of the end face of the support rod away from the support plate.

[0009] Preferably, the end of the connecting rod away from the B plate and away from the limiting block has a protruding hanging platform, which is projected onto the outside of the first through hole along the mold closing direction.

[0010] Preferably, one end of the support rod is threaded to the support plate.

[0011] Preferably, the connecting element is a screw, the connecting element is disposed inside the receiving groove, and the end of the connecting element with external threads passes through the connecting protective sleeve.

[0012] Preferably, the end face of the connecting rod away from plate B is provided with a fixing element, and one end of the limiting block is disposed between the fixing element and the bottom of the stepped groove.

[0013] Preferably, the fixing element is a flat-head screw, which includes an integrally formed screw head and a threaded post. The end face of the connecting rod away from the B plate has a threaded hole, the threaded post is threaded into the threaded hole, the screw head is a cylinder, and one end of the limiting block is disposed between the screw head and the bottom of the stepped groove.

[0014] The beneficial effects of this invention are as follows: Due to the interference fit between the nylon plug and the receiving groove of the connecting protective sleeve, the nylon plug cannot be inserted into the receiving groove immediately during mold closing, and the nylon plug will lift the connecting protective sleeve. The connecting rod will move synchronously with the connecting protective sleeve. When the connecting protective sleeve is lifted by the nylon plug, the connecting rod will lift the sprue plate. When plate A is displaced, the position of the sprue plate remains unchanged, thus achieving the reset of plates A and B first.

[0015] When the connecting protective sleeve slides to the end of the second through hole, the fixing plate pushes the sprue plate to move synchronously. The displacement of the sprue plate drives the connecting protective sleeve to move in the opposite direction along the second through hole. The nylon plug is then inserted into the receiving groove of the connecting protective sleeve, achieving the rear reset of the A plate and the sprue plate. The nylon plug's mold-closing function fails. This structure can easily achieve this function, has wide applicability, and avoids the use of redundant mold structures such as numerous fasteners. Attached Figure Description

[0016] The accompanying drawings further illustrate the present invention, but the embodiments in the drawings do not constitute any limitation on the present invention.

[0017] Figure 1 This is a schematic diagram of the mold structure for delayed reset of nylon rubber plugs provided in an embodiment of the present invention; Figure 2 for Figure 1 A magnified view of a portion of region A in the middle; Figure 3 This is a schematic diagram of the structure of a delayed reset component provided in an embodiment of the present invention; Figure 4 A cross-sectional view of a delayed reset component provided in an embodiment of the present invention; Markings in the diagram: 1: Fixing plate; 2: Sprue plate; 3: Plate A; 4: Plate B; 5: Support plate; 6: Nylon rubber plug; 7: Connecting rod; 8: Connecting protective sleeve; 9: Support rod; 10: Limiting block; 11: Step groove; 12: Hanging platform; 13: Connecting element; 14: Fastening screw; 15: Fixing element. Detailed Implementation

[0018] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0019] It should be noted that, in this utility model, unless otherwise stated, when an element is referred to as "fixed to" or "set on" another element, it can be directly on the other element or may have an intervening element present simultaneously. "Inner" and "outer" refer to the inner and outer contours of a specific part. "Far" and "near" refer to the distance from or near to a certain component.

[0020] like Figures 1-3 As shown in the figure, an embodiment of the present invention provides a mold structure for delayed reset of a nylon rubber stopper 6, including a fixing plate 1, a sprue plate 2, an A plate 3, a B plate 4, a support plate 5, and a delayed reset assembly. The fixing plate 1 is fixedly connected to the sprue plate 2, and the fixing plate 1, the sprue plate 2, the A plate 3, the B plate 4, and the support plate 5 are stacked sequentially. The delayed reset assembly includes: Nylon rubber stopper 6; The connecting rod 7 has a first through hole on the surface of the A plate 3 away from the B plate 4, and a second through hole on the parting surface of the A plate 3. The connecting rod 7 is slidably disposed in the first through hole and abuts against the sprue plate 2. A connecting protective sleeve 8 is slidably disposed inside the second through hole. One end of the connecting protective sleeve 8 is fixed to the connecting rod 7, and the other end of the connecting protective sleeve 8 is provided with a receiving groove. The outer diameter of the nylon rubber plug 6 is larger than the diameter of the receiving groove. The support rod 9 has a third through hole in the B plate 4, and the support rod 9 is slidably disposed inside the third through hole. One end of the support rod 9 is detachably disposed on the support plate 5, and the nylon rubber plug 6 is disposed on the other end of the support rod 9. Limiting block 10, the limiting block 10 is disposed on the surface of plate A 3 away from plate B 4, and a stepped groove 11 is opened at one end of the end face of the connecting rod 7 away from plate B 4, and one end of the limiting block 10 is disposed on the movement path at the bottom of the stepped groove 11. During mold closing, the nylon plug 6 is interference-fitted into the receiving groove.

[0021] The length of the connecting rod 7 is greater than the depth of the first through hole, and the total length of the connecting rod 7 and the connecting protective sleeve 8 is equal to the thickness of plate A 3. When the mold is closed, the connecting rod 7 and the connecting protective sleeve 8 respectively abut against the sprue plate 2 and plate B 4, which facilitates the immediate mold opening.

[0022] The connecting protective sleeve 8 is a rigid metal sleeve or a nylon sleeve. The rigid metal sleeve has a clearance fit with the second through hole, and the nylon sleeve has an interference fit with the second through hole.

[0023] The end of the connecting rod 7 near plate B 4 abuts against the end of the connecting protective sleeve 8 away from plate B 4. The connecting rod 7 and the connecting protective sleeve 8 are detachably connected by the connecting element 13. Installing the connecting protective sleeve 8 through the connecting element 13 facilitates the removal and replacement of the connecting protective sleeve 8.

[0024] The nylon plug 6 is detachably mounted on the support rod 9 via a fastening screw 14. The nylon plug 6 has a central hole through which the fastening screw 14 passes, and the fastening screw 14 is threaded onto the center of the end face of the support rod 9 away from the support plate 5. The nylon plug 6 is mounted on the support rod 9 via the fastening screw 14, facilitating the removal and replacement of the nylon plug 6.

[0025] The end of the connecting rod 7 away from plate B 4 and away from the limiting block 10 has a protruding mounting platform 12, which is projected onto the outside of the first through hole along the mold closing direction. The mounting platform 12 and the limiting block 10 restrict the range of motion of the connecting rod 7.

[0026] One end of the support rod 9 is threaded to the support plate 5. This facilitates the disassembly and replacement of the support rod 9.

[0027] The connecting element 13 is a screw, which is disposed inside the receiving groove. One end of the connecting element 13 with external threads passes through the connecting protective sleeve 8, facilitating the disassembly and replacement of the connecting protective sleeve 8.

[0028] like Figure 4As shown in the illustration, in one embodiment, a fixing element 15 is provided on the end face of the connecting rod 7 away from the B plate 4, and one end of the limiting block 10 is disposed between the fixing element 15 and the bottom of the stepped groove 11. The displacement range of the connecting rod 7 is limited by the cooperation between the fixing element 15 and the bottom of the stepped groove 11, and the limiting block 10.

[0029] The fixing element 15 is a flat-head screw, which includes an integrally formed screw head and a threaded post. The end face of the connecting rod 7 away from the B plate 4 has a threaded hole, and the threaded post is threaded into the threaded hole. The screw head is cylindrical, and one end of the limiting block 10 is positioned between the screw head and the bottom of the stepped groove 11. The displacement range of the connecting rod 7 is limited by the cooperation between the flat-head screw and the bottom of the stepped groove 11, and the limiting block 10.

[0030] The technical features of the embodiments described above can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of this utility model, and these should all be considered to be within the scope of this specification.

Claims

1. A mold structure for delayed reset of a nylon rubber stopper, characterized in that: The system includes a fixed plate, a sprue plate, an A plate, a B plate, a support plate, and a delayed reset assembly. The fixed plate, sprue plate, A plate, B plate, and support plate are stacked sequentially. The delayed reset assembly includes: Nylon rubber stoppers; A connecting rod is provided. A first through hole is provided on the surface of plate A away from plate B. A second through hole is provided on the parting surface of plate A. The connecting rod is slidably disposed in the first through hole and abuts against the sprue plate. A connecting protective sleeve is slidably disposed inside the second through hole. One end of the connecting protective sleeve is fixed to the connecting rod, and the other end of the connecting protective sleeve is provided with a receiving groove. The outer diameter of the nylon rubber plug is larger than the diameter of the receiving groove. The support rod has a third through hole in plate B, and the support rod is slidably disposed inside the third through hole. One end of the support rod is detachably disposed on the support plate, and the nylon rubber plug is disposed at the other end of the support rod. A limiting block is provided on the surface of plate A away from plate B. A stepped groove is provided at one end of the connecting rod away from plate B. One end of the limiting block is located on the movement path at the bottom of the stepped groove. During mold closing, the nylon plug is interference-fitted into the receiving groove.

2. The mold structure for delayed reset of the nylon plug according to claim 1, characterized in that: The length of the connecting rod is greater than the depth of the first through hole, and the total length of the connecting rod and the connecting protective sleeve is equal to the thickness of plate A.

3. The mold structure for delayed reset of the nylon plug according to claim 1, characterized in that: The connecting protective sleeve is a rigid metal sleeve or a nylon sleeve.

4. The mold structure for delayed reset of the nylon plug according to claim 2, characterized in that: The end of the connecting rod near plate B abuts against the end of the connecting protective sleeve away from plate B, and the connecting rod and the connecting protective sleeve are detachably connected by a connecting element.

5. The mold structure for delayed reset of the nylon plug according to claim 1, characterized in that: The nylon plug is detachably mounted on the support rod by a fastening screw. The nylon plug has a central hole through which the fastening screw passes. The fastening screw is threaded onto the middle of the end face of the support rod away from the support plate.

6. The mold structure for delayed reset of the nylon plug according to claim 1, characterized in that: The end face of the connecting rod away from plate B and away from the limiting block has a protruding hanging platform, which is projected onto the outside of the first through hole along the mold closing direction.

7. The mold structure for delayed reset of the nylon plug according to claim 1, characterized in that: One end of the support rod is threaded to the support plate.

8. The mold structure for delayed reset of the nylon plug according to claim 4, characterized in that: The connecting element is a screw, which is disposed inside the receiving groove, and the end of the connecting element with external threads passes through the protective sleeve.

9. The mold structure for delayed reset of the nylon plug according to claim 1, characterized in that: The end face of the connecting rod away from plate B is provided with a fixing element, and one end of the limiting block is located between the fixing element and the bottom of the stepped groove.

10. The mold structure for delayed reset of the nylon plug according to claim 9, characterized in that: The fixing element is a flat-head screw, which includes an integrally formed screw head and a threaded post. The end face of the connecting rod away from the B plate has a threaded hole. The threaded post is threaded into the threaded hole. The screw head is a cylinder. One end of the limiting block is located between the screw head and the bottom of the stepped groove.

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