Pin pulling device for injection mold

Abstract

The utility model provides a pin pulling device for an injection mold. The pin pulling device comprises an impact sleeve handle, a limiting connecting sleeve and a stress pulling rod assembly. One end of the limiting connecting sleeve extends out of the threaded end of the pin pulling screw. The stress pulling rod assembly comprises a first connecting rod, a second connecting rod, a third connecting rod and a fourth connecting rod; one end of the first connecting rod is detachably connected with the other end of the limiting connecting sleeve, the other end of the first connecting rod is rotationally connected to one end of the second connecting rod, the other end of the second connecting rod is rotationally connected to one end of the third connecting rod, and the other end of the third connecting rod is rotationally connected to one end of the fourth connecting rod; an impact stopper is formed at the other end of the fourth connecting rod. When the pin pulling device does not need to be used, the first connecting rod, the second connecting rod, the third connecting rod and the fourth connecting rod can be rotated and bent into a state easy to store from a long-strip-shaped working state, meanwhile, the structural compactness of the pin pulling device is improved, and therefore the storability of the pin pulling device is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of injection mold production, in particular to a pin pulling device for an injection mold. Background Art

[0002] During the assembly and mold repair process of the injection mold, it is often necessary to disassemble the various templates and components of the mold, among which there are many positioning pins, guide pins or clamping blocks with internal threaded holes that need to be disassembled. Therefore, in order to improve the convenience of disassembly for relevant staff, pin pullers with long strip structures have appeared on the market. For example, Chinese patent document CN211661942U discloses a pin puller that can quickly remove the mold, including a force-bearing rod, a lever cylinder that is sleeved on the force-bearing rod and can slide back and forth along the force-bearing rod, and a limiting mechanism used to connect between the mold to be removed and the force-bearing rod to prevent the lever cylinder from detaching from the force-bearing rod, and the lever cylinder slides along the force-bearing rod to knock the end of the force-bearing rod to force the parts in the mold to detach from the mold. The above-mentioned pin puller uses the force generated by the sliding of the lever cylinder to knock the cup head position of the force-bearing rod to drive the parts to detach from the mold, making the disassembly process easy and quick.

[0003] However, the technical solution disclosed in the above patent still has the following problems: although the assembly structure of the above pin puller is relatively simple, the pin puller is an elongated structure as a whole, and has the problem of poor storability. Therefore, it is easy for workshop staff to place the pin puller at will, which is not conducive to the implementation of 5S management in the workshop. Utility Model Content

[0004] The utility model aims to overcome the shortcomings of the prior art and provide a pin pulling device for an injection mold with better storability.

[0005] The purpose of this utility model is achieved through the following technical solutions:

[0006] A pin pulling device for an injection mold, comprising:

[0007] Impact sleeve handle;

[0008] A position limiting connecting sleeve, one end of which extends out of the threaded end of the pull pin screw;

[0009] The force-bearing pull rod assembly includes a first connecting rod, a second connecting rod, a third connecting rod and a fourth connecting rod; one end of the first connecting rod is detachably connected to the other end of the limiting connecting sleeve, the other end of the first connecting rod is rotatably connected to one end of the second connecting rod, the other end of the second connecting rod is rotatably connected to one end of the third connecting rod, and the other end of the third connecting rod is rotatably connected to one end of the fourth connecting rod; the other end of the fourth connecting rod is formed with an impact stopper.

[0010] In one embodiment, the impact sleeve handle is slidably sleeved on the outer peripheral walls of the first connecting rod, the second connecting rod, the third connecting rod and the fourth connecting rod.

[0011] In one embodiment, a connection hole is formed on one end surface of the position-limiting connection sleeve, a positioning hole is formed on the bottom of the connection hole, and a positioning through hole connected to the positioning hole is formed on the other end surface of the position-limiting connection sleeve;

[0012] One end portion of the first connecting rod is located in the connecting hole, the head of the pin pulling screw is arranged in the positioning hole, and the threaded end of the pin pulling screw is passed through the positioning through hole and protrudes from the other end surface of the limiting connecting sleeve.

[0013] In one embodiment, the pin pulling device for the injection mold also includes a connecting and fastening assembly, which includes a hexagonal pin, one end of which is arranged in the hexagonal hole of the head of the pin pulling screw, and the other end of the hexagonal pin is connected to one end of the first connecting rod.

[0014] In one embodiment, one end of the first connecting rod is provided with a connecting notch matching the outer peripheral wall of the hexagonal pin, and the other end of the hexagonal pin is arranged in the connecting notch.

[0015] In one embodiment, a first through hole is formed on the outer peripheral wall of the position-limiting connecting sleeve, and a second through hole is formed on the outer peripheral wall of one end of the first connecting rod, and the centers of the first through hole and the second through hole are aligned;

[0016] The connecting and fastening assembly also includes a fastener, and the threaded end of the fastener is sequentially penetrated through the first penetration hole and the second penetration hole and is threadedly connected to the other end of the hexagonal pin.

[0017] In one embodiment, the pin extraction device for the injection mold further includes a lighting assembly, which is detachably connected to the outer peripheral wall of the limiting connecting sleeve, wherein a button battery is embedded in the lighting assembly, wherein the lighting assembly is formed with a lamp holder, wherein the lamp holder is electrically connected to the button battery, and wherein the illumination direction of the lamp holder is toward the threaded end of the pin extraction screw.

[0018] In one embodiment, the impact sleeve handle is an integrally formed structure.

[0019] In one embodiment, the first connecting rod, the second connecting rod, the third connecting rod and the fourth connecting rod are all integrally formed structures.

[0020] Compared with the prior art, the utility model has at least the following advantages:

[0021] By arranging a rotation connection point respectively between the first connecting rod and the second connecting rod, the second connecting rod and the third connecting rod, and the third connecting rod and the fourth connecting rod, when the pin pulling device is not needed, the first connecting rod, the second connecting rod, the third connecting rod and the fourth connecting rod can be rotated and bent from the long strip shape in the working state to a state that is easy to store, thereby effectively improving the storageability of the pin pulling device; wherein, the limit connecting sleeve and the impact stopper can also prevent the impact sleeve handle of the pin pulling device in the storage state from falling off, thereby increasing the compactness of the pin pulling device and making it easier to organize and store the pin pulling device, which is conducive to the implementation and development of 5S management work in the workshop. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 A schematic diagram of the structure of a pin pulling device for an injection mold in one embodiment;

[0024] Figure 2 for Figure 1 A schematic structural diagram of a pin pulling device for an injection mold in a retracted state;

[0025] Figure 3 for Figure 1 An exploded schematic diagram of the structure of a limit connecting sleeve and a pin pulling screw of a pin pulling device for an injection mold shown in FIG.

[0026] Figure 4 for Figure 1 An exploded schematic diagram of a partial structure of a pin pulling device for an injection mold shown;

[0027] Figure 5 for Figure 1 A schematic diagram of a partial structure of a pin pulling device for an injection mold shown;

[0028] Figure numerals: pin extraction device 10 for injection mold; impact sleeve handle 100; limiting connecting sleeve 200; connecting hole 201; positioning placement hole 202; positioning through hole 203; first penetration hole 204; pin extraction screw 300; force extraction rod assembly 400; first connecting rod 410; connecting slot 4101; second penetration hole 4102; second connecting rod 420; third connecting rod 430; fourth connecting rod 440; impact stopper 4410; fastening assembly 500; hexagonal pin 510; fastener 520; lighting assembly 600; lamp holder 610. DETAILED DESCRIPTION

[0029] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively with reference to the relevant drawings. The drawings provide preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thoroughly and comprehensively understood.

[0030] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0032] The present invention provides a pin extraction device for an injection mold, comprising an impact sleeve handle, a limit connecting sleeve and a force extraction rod assembly. A threaded end of a pin extraction screw extends from one end of the limit connecting sleeve. The force extraction rod assembly comprises a first connecting rod, a second connecting rod, a third connecting rod and a fourth connecting rod; one end of the first connecting rod is detachably connected to the other end of the limit connecting sleeve, the other end of the first connecting rod is rotatably connected to one end of the second connecting rod, the other end of the second connecting rod is rotatably connected to one end of the third connecting rod, the other end of the third connecting rod is rotatably connected to one end of the fourth connecting rod; the other end of the fourth connecting rod is formed with an impact stopper.

[0033] See also Figures 1 to 5 In order to better understand the pin pulling device 10 for the injection mold of the present application, the pin pulling device 10 for the injection mold is further explained below:

[0034] A pin extraction device 10 for an injection mold according to an embodiment includes an impact sleeve handle 100, a position-limiting connection sleeve 200, and a force extraction rod assembly 400. The threaded end of the pin extraction screw 300 extends from one end of the position-limiting connection sleeve 200. The force extraction rod assembly 400 includes a first connecting rod 410, a second connecting rod 420, a third connecting rod 430, and a fourth connecting rod 440; one end of the first connecting rod 410 is detachably connected to the other end of the position-limiting connection sleeve 200, the other end of the first connecting rod 410 is rotationally connected to one end of the second connecting rod 420, the other end of the second connecting rod 420 is rotationally connected to one end of the third connecting rod 430, and the other end of the third connecting rod 430 is rotationally connected to one end of the fourth connecting rod 440; the other end of the fourth connecting rod 440 is formed with an impact stopper 4410.

[0035] In this embodiment, by providing a rotation connection point between the first link 410 and the second link 420, the second link 420 and the third link 430, and the third link 430 and the fourth link 440, when the pin pulling device is not in use, the first link 410, the second link 420, the third link 430 and the fourth link 440 can be rotated and bent from the long strip shape in the working state to a state that is easy to store, thereby effectively improving the storageability of the pin pulling device; wherein, the limiting connecting sleeve 200 and the impact stopper 4410 can also prevent the impact sleeve handle 100 of the pin pulling device in the storage state from falling off, thereby increasing the compactness of the pin pulling device and making it easier to organize and store the pin pulling device, which is conducive to the implementation and development of the 5S management work in the workshop.

[0036] like Figure 1 and Figure 2 As shown, in one embodiment, the impact sleeve handle 100 is slidably mounted on the outer peripheral walls of the first connecting rod 410 , the second connecting rod 420 , the third connecting rod 430 and the fourth connecting rod 440 .

[0037] It can be understood that when it is necessary to use a pin pulling device to remove the locating pin with an internal threaded hole on the mold, the threaded end of the pin pulling screw 300 is connected to the internal threaded hole of the locating pin, and the pin pulling device is extended from the storage state to a long strip. At this time, the user can hold the impact sleeve handle 100 and slide it to hit the impact stopper 4410 at the other end of the fourth connecting rod 440, effectively utilizing the impact inertia of the impact sleeve handle 100 to easily complete the removal of the locating pin.

[0038] like Figures 1 to 4As shown, in one embodiment, a connecting hole 201 is provided on one end face of the limiting connecting sleeve 200, a positioning hole 202 is provided on the bottom of the connecting hole 201, and a positioning through hole 203 connected to the positioning hole 202 is provided on the other end face of the limiting connecting sleeve 200; one end portion of the first connecting rod 410 is located in the connecting hole 201, the head of the pin puller screw 300 is arranged in the positioning hole 202, and the threaded end of the pin puller screw 300 is passed through the positioning through hole 203 and protrudes from the other end face of the limiting connecting sleeve 200.

[0039] It can be understood that in this embodiment, the pin extraction screw 300 is a standard hexagon socket head screw. The head of the pin extraction screw 300 is arranged in the positioning hole 202, and one end of the first connecting rod 410 is used to movably limit the pin extraction screw 300, so that the pin extraction screw 300 is reliably positioned and installed in the positioning hole 202 and the positioning through hole 203.

[0040] like Figure 4 and Figure 5 As shown, in one embodiment, the pin pulling device 10 for the injection mold further includes a connection fastening assembly 500, and the connection fastening assembly 500 includes a hexagonal pin 510, one end of which is disposed in the hexagonal hole of the head of the pin pulling screw 300, and the other end of the hexagonal pin 510 is connected to one end of the first connecting rod 410. In one embodiment, a connection notch 4101 matching the outer peripheral wall of the hexagonal pin 510 is formed at one end of the first connecting rod 410, and the other end of the hexagonal pin 510 is disposed in the connection notch 4101.

[0041] It can be understood that by matching the hexagonal pin 510 with the hexagonal hole on the head of the pull pin screw 300 and the connecting slot 4101, the pull pin screw 300 can be positioned and fastened, thereby effectively preventing the pull pin screw 300 from loosening. At the same time, different specifications of hexagonal round head screw standard parts can be replaced, thereby realizing the disassembly of different types of locating pins with internal threaded holes.

[0042] like Figure 3 and Figure 4 As shown, in one embodiment, a first through hole 204 is formed on the outer wall of the limiting connecting sleeve 200, and a second through hole 4102 is formed on the outer wall of one end of the first connecting rod 410, and the centers of the first through hole 204 and the second through hole 4102 are aligned; the connecting and fastening assembly 500 also includes a fastener 520, and the threaded ends of the fastener 520 are sequentially penetrated through the first through hole 204 and the second through hole 4102 and are threadedly connected to the other end of the hexagonal pin 510.

[0043] It can be understood that in this embodiment, one end of the first connecting rod 410 and the hexagonal pin 510 are fixed in the connecting hole 201 through the threaded end of the fastener 520 to achieve the connection between the limiting connecting sleeve 200 and the pin extraction screw 300 and the first connecting rod 410.

[0044] In other embodiments, in order to maintain the balance of force when one end of the first connecting rod 410 is connected to the limiting connecting sleeve 200, the outer wall of the limiting connecting sleeve 200 is provided with at least two second penetration holes 4102, and the outer wall of one end of the first connecting rod 410 is provided with at least two first penetration holes 204, and correspondingly, there are at least two fasteners 520 to connect the limiting connecting sleeve 200 and the pin puller screw 300 with the first connecting rod 410.

[0045] like Figure 3 and Figure 5 As shown, in one embodiment, the pin extraction device 10 for the injection mold further includes a lighting assembly 600, which is detachably connected to the outer peripheral wall of the limiting connecting sleeve 200, and a button battery (not shown) is embedded in the lighting assembly 600. The lighting assembly 600 is formed with a lamp holder 610, and the lamp holder 610 is electrically connected to the button battery (not shown), and the illumination direction of the lamp holder 610 is toward the threaded end of the pin extraction screw 300.

[0046] It can be understood that the lamp head 610 of the lighting assembly 600 can provide lighting effects for the positioning pins with internal threaded holes on the mold that need to be removed, making it easier for users to observe the connection between the threaded end of the pin extraction screw 300 and the positioning pin, thereby effectively improving the removal efficiency of the positioning pins.

[0047] It should be noted that the pin removal device 10 for the injection mold only protects the positional relationship between the lighting assembly 600 and other components, and the lighting assembly 600 belongs to the prior art and is not within the protection scope of the present disclosure.

[0048] like Figure 1 As shown, in one embodiment, the impact sleeve handle 100 is an integrally formed structure. In one embodiment, the first connecting rod 410, the second connecting rod 420, the third connecting rod 430 and the fourth connecting rod 440 are all integrally formed structures.

[0049] It can be understood that when the user holds the impact sleeve handle 100 and slides to impact the impact stopper 4410 at the other end of the fourth connecting rod 440, due to the impact inertia, the various components of the pin pulling device need to withstand a large structural connection strength. By adopting an integrated structural design for each component, the pin pulling device can effectively maintain a good structural connection strength; at the same time, the bendability between the first connecting rod 410, the second connecting rod 420, the third connecting rod 430 and the fourth connecting rod 440 is also achieved, so that the pin pulling device has good retractability.

[0050] Compared with the prior art, the utility model has at least the following advantages:

[0051] By arranging a rotation connection point respectively between the first connecting rod and the second connecting rod, the second connecting rod and the third connecting rod, and the third connecting rod and the fourth connecting rod, when the pin pulling device is not needed, the first connecting rod, the second connecting rod, the third connecting rod and the fourth connecting rod can be rotated and bent from the long strip shape in the working state to a state that is easy to store, thereby effectively improving the storageability of the pin pulling device; wherein, the limit connecting sleeve and the impact stopper can also prevent the impact sleeve handle of the pin pulling device in the storage state from falling off, thereby increasing the compactness of the pin pulling device and making it easier to organize and store the pin pulling device, which is conducive to the implementation and development of 5S management work in the workshop.

[0052] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A pin pulling device for an injection mold, characterized in that: include: Impact sleeve handle; A position limiting connecting sleeve, one end of which extends out of the threaded end of the pull pin screw; The force-bearing pull rod assembly includes a first connecting rod, a second connecting rod, a third connecting rod and a fourth connecting rod; one end of the first connecting rod is detachably connected to the other end of the limiting connecting sleeve, the other end of the first connecting rod is rotatably connected to one end of the second connecting rod, the other end of the second connecting rod is rotatably connected to one end of the third connecting rod, and the other end of the third connecting rod is rotatably connected to one end of the fourth connecting rod; the other end of the fourth connecting rod is formed with an impact stopper.

2. The pin pulling device for injection mold according to claim 1, characterized in that: The impact sleeve handle is slidably sleeved on the outer peripheral walls of the first connecting rod, the second connecting rod, the third connecting rod and the fourth connecting rod.

3. The pin pulling device for injection mold according to claim 1, characterized in that: A connection hole is formed on one end surface of the position-limiting connection sleeve, a positioning hole is formed on the bottom of the connection hole, and a positioning through hole connected to the positioning hole is formed on the other end surface of the position-limiting connection sleeve; One end portion of the first connecting rod is located in the connecting hole, the head of the pin pulling screw is arranged in the positioning hole, and the threaded end of the pin pulling screw is passed through the positioning through hole and protrudes from the other end surface of the limiting connecting sleeve.

4. The pin pulling device for injection mold according to claim 3, characterized in that: The pin pulling device for the injection mold also includes a connecting and fastening component, which includes a hexagonal pin. One end of the hexagonal pin is arranged in the hexagonal hole of the head of the pin pulling screw, and the other end of the hexagonal pin is connected to one end of the first connecting rod.

5. The pin pulling device for injection mold according to claim 4, characterized in that: One end of the first connecting rod is provided with a connecting notch matching the outer peripheral wall of the hexagonal pin, and the other end of the hexagonal pin is arranged in the connecting notch.

6. The pin pulling device for injection mold according to claim 4, characterized in that: A first through hole is formed on the outer peripheral wall of the position-limiting connecting sleeve, and a second through hole is formed on the outer peripheral wall of one end of the first connecting rod, and the centers of the first through hole and the second through hole are aligned; The connecting and fastening assembly also includes a fastener, and the threaded end of the fastener is sequentially penetrated through the first penetration hole and the second penetration hole and is threadedly connected to the other end of the hexagonal pin.

7. The pin pulling device for an injection mold according to claim 1, characterized in that: The pin extraction device for the injection mold also includes a lighting component, which is detachably connected to the outer peripheral wall of the limiting connecting sleeve, and has a button battery embedded in it. The lighting component is formed with a lamp head, and the lamp head is electrically connected to the button battery. The illumination direction of the lamp head is toward the threaded end of the pin extraction screw.

8. The pin pulling device for injection mold according to claim 1, characterized in that: The impact sleeve handle is an integrally formed structure.

9. The pin pulling device for an injection mold according to claim 1, characterized in that: The first connecting rod, the second connecting rod, the third connecting rod and the fourth connecting rod are all integrally formed structures.

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