Practical manual pin puller

Abstract

The utility model relates to the technical field of mold manufacturing equipment, in particular to a practical manual pin puller. The pin puller comprises a pull rod, the top of the pull rod is provided with a limiting disc, the outer surface of the bottom of the pull rod is provided with threads, and the pull rod is sleeved with an impact handle between the limiting disc and a base; the interior of the base is hollow, the base sequentially comprises a threaded hole section and an unthreaded hole section from top to bottom, and two opposite sides of the unthreaded hole section are opened to form an insertion channel; the inserting plate is inserted into the inserting channel, a plurality of mounting holes with different diameters are formed in the inserting plate, and the diameter of each mounting hole is smaller than that of each unthreaded hole; the pull-out screw comprises a head, a straight rod and a threaded rod which are sequentially connected from top to bottom, the nominal diameter of the straight rod and the nominal diameter of the threaded rod are the same and smaller than the nominal diameter of the head, the size of the threaded hole and the size of the unthreaded hole are matched with the size of the head, and the size of the mounting hole is matched with the size of the straight rod and the size of the threaded rod. The pin pulling-out device effectively solves the technical problem that in the prior art, a pin cannot be pulled out of a die quickly and efficiently.

Description

Technical Field

[0001] This utility model relates to the field of mold manufacturing equipment technology, and in particular to a practical manual pin puller. Background Technology

[0002] A pin, also known as a fastener, is a common fastener used to secure several individual objects together or as a support suspending one object from another. In mold manufacturing, pins are commonly used at the joints of various plates and inserts for positioning. When the mold needs maintenance, the pins often need to be removed without damaging the mold.

[0003] Currently, there are two main methods for removing pins from pin holes. One is the drilling method, which involves selecting a suitable drill bit based on the pin's material, size, and specific position in the mold. Then, a suitable drilling position is selected on the pin, and an electric drill or other drilling equipment is used to drill at the selected position until the pin is broken into sufficiently small fragments so that they can be removed one by one through the gaps in the mold or the reserved chip removal holes. The other is the hydraulic pin puller method, which involves accurately clamping the part of the pin protruding from the mold surface with the clamping part of the hydraulic pin puller. Then, pressure is applied to the hydraulic pin puller manually or electrically, causing the hydraulic oil inside to be pressurized and generate thrust, forcing the pin to gradually exit from the pin hole in the mold.

[0004] However, the drilling method is prone to damaging other structures around the mold during the drilling process, and it is difficult and time-consuming to clean up the pin fragments. As for the hydraulic pin puller method, the hydraulic pin puller has a more complex structure and is more complicated to operate. It is also limited by mechanical space and cannot pull out pins that have not protruded from the mold surface. Utility Model Content

[0005] This invention provides a practical manual pin puller to solve the technical problem in the prior art that it is impossible to quickly and efficiently pull pins out of the mold.

[0006] To solve the above problems, the practical manual pin puller provided by this utility model adopts the following technical solution:

[0007] A practical manual pin puller, comprising:

[0008] The pull rod has a limiting plate at the top and threads on the outer surface of the bottom so that it can be screwed onto the base. An impact handle is fitted on the pull rod between the limiting plate and the base.

[0009] The base is hollow inside and consists of a threaded hole section and a smooth hole section from top to bottom. The threaded hole is used to screw on the pull rod, and the smooth hole is used to install the pull-out screw. The two opposite sides of the smooth hole section are open to form an insertion channel for inserting the insert plate.

[0010] a plurality of mounting holes with different diameters are formed in the plug-in plate, and the diameters of the mounting holes are smaller than the diameter of the light hole;

[0011] The pull-out screw comprises a head, a straight rod and a threaded rod connected in sequence from top to bottom, the nominal diameters of the straight rod and the threaded rod are the same and smaller than the nominal diameter of the head, the sizes of the threaded hole and the light hole are matched with the size of the head, and the sizes of the mounting holes are matched with the sizes of the straight rod and the threaded rod.

[0012] The utility model discloses a practical manual pin puller which has the advantages that: the manual pin puller comprises a pull rod, an impact handle, a base and a pull-out screw, a limiting disc is arranged on the top of the pull rod, a screw thread is arranged on the outer surface of the bottom of the pull rod, the impact handle is sleeved on the pull rod, a threaded hole for rotating the pull rod and a plug-in channel for plugging the plug-in plate are formed in the base, a mounting hole for mounting the pull-out screw is formed in the plug-in plate, when in use, the base is separated from the pull rod, the plug-in plate is plugged into the base, the mounting hole with the required size is matched with the light hole in the base, then the pull-out screw is penetrated into the base from top to bottom, the bottom of the pull rod is rotated and fixed in the base, the bottom of the pull rod is abutted with the head of the pull-out screw, after the rotation and fixing are completed, the impact handle is held and moved up and down along the pull rod, the pin can be pulled out from the pin hole by the impact of the impact handle, and the structure is small, the operation steps are simple and the utility model is easy to store.

[0013] Through the above arrangement, the utility model effectively solves the technical problem that the pin cannot be quickly and efficiently pulled out from the mold in the prior art.

[0014] Further, the impact handle has a holding groove for holding the impact handle.

[0015] Further, the number of the holding grooves is two, and the two holding grooves are formed on the opposite sides of the impact handle.

[0016] Further, the cross section of the base is inverted T-shaped, and the base comprises a vertical segment and a horizontal segment, and the plug-in channel is formed at the connection between the horizontal segment and the vertical segment.

[0017] Further, the mounting holes are uniformly distributed in the length direction of the plug-in plate.

[0018] Further, the number of the mounting holes is six.

[0019] Further, the diameters of the six mounting holes are 5mm, 6mm, 7mm, 9mm, 11mm and 13mm respectively.

[0020] Further, the plug-in plate is rectangular in structure, and the two ends in the length direction of the plug-in plate have outward convex arc segments. BRIEF DESCRIPTION OF DRAWINGS

[0021] The above and other objects, features and advantages of the present application will become more apparent from the following detailed description read in conjunction with the accompanying drawings. In the drawings, several embodiments of the present application are shown by way of example, and like or corresponding elements are indicated by like or corresponding reference numbers, in which:

[0022] Fig. 1 A structure schematic view of the utility type manual pin extractor provided by the present application;

[0023] Fig. 2 A structure schematic view of the pull rod provided by the present application;

[0024] Fig. 3 A structure schematic view of the plug-in plate provided by the present application;

[0025] Fig. 4 A structure schematic view of the screw pulling-out provided by the present application.

[0026] Explanation of reference signs:

[0027] 1, pull rod; 2, limiting disc; 3, base; 4, impact handle; 5, screw pulling-out; 6, plug-in plate; 7, mounting hole; 8, head; 9, straight rod; 10, threaded rod; 11, holding groove. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application, and those skilled in the art should know that the embodiments described below are only part of the embodiments of the present disclosure, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0029] It should be noted that the main concept of the utility type manual pin extractor provided by the present application is that: a pull rod 1 is arranged, a limiting disc 2 is arranged at the top end of the pull rod 1, a thread is arranged on the outer surface of the bottom end, an impact handle 4 is sleeved on the pull rod 1, the bottom end of the pull rod 1 is screwed on the base 3, a plug-in channel for plug-in of the plug-in plate 6 is formed on the base 3, in use, the base 3 is separated from the pull rod 1, the plug-in plate 6 is plug-in in the plug-in channel, the plug-in length of the plug-in plate 6 is controlled to control the alignment of the mounting hole 7 of the required size with the light hole on the base 3, then the screw pulling-out 5 required is penetrated through the base 3 from top to bottom, the pull rod 1 is screwed in the base 3, the bottom end of the pull rod 1 abuts against the head 8 of the screw pulling-out 5, the screw pulling-out 5 is screwed in the pin to be pulled out, and the impact handle 4 is held and moved up and down, so that the pin is pulled out from the pin hole under the impact of the impact handle 4.

[0030] After introducing the basic principles of this utility model, various non-limiting embodiments of this utility model are described in detail below. Any quantity of elements in the accompanying drawings is for illustrative purposes only and not for limitation, and any naming is for distinction only and has no limiting meaning.

[0031] The principles and spirit of this utility model will be explained in detail below with reference to several representative embodiments.

[0032] Example 1 of the practical manual pin puller provided by this utility model:

[0033] like Figs. 1 to 4 As shown, the practical manual pin puller includes a pull rod 1, a base 3, a insert plate 6, and a pull-out screw 5.

[0034] Regarding the pull rod 1: The top of the pull rod 1 is provided with a limiting disc 2, and the outer surface of the bottom is threaded. An impact handle 4 is fitted between the limiting disc 2 and the base 3. The limiting disc 2 is used to limit the excessive upward movement of the impact handle 4, and the thread is used to screw the pull rod 1 onto the base 3.

[0035] The impact handle 4 is a hollow rod-shaped structure with gripping grooves on its two opposite sides for gripping the impact handle 4.

[0036] Regarding base 3: The interior of base 3 is hollow and its cross-section is inverted T-shaped. It includes a vertical section and a horizontal section. The vertical section includes a threaded hole section and a smooth hole section from top to bottom. The threaded hole is used to screw on the pull rod 1, and the smooth hole is used to install the pull-out screw 5. The two opposite sides of the smooth hole section are open to form an insertion channel for inserting the insert plate 6. The horizontal section has a smooth hole corresponding to the vertical section.

[0037] Specifically, the insertion channel is located at the junction of the horizontal and vertical sections, and the diameter of both the threaded hole and the smooth hole is 20mm.

[0038] Regarding the insert plate 6: The insert plate 6 has a rectangular structure with outwardly convex arc-shaped sections at both ends along its length. The insert plate 6 has six mounting holes 7 of different diameters, which are evenly distributed along the length of the insert plate 6. Their diameters from left to right are 5mm, 6mm, 7mm, 9mm, 11mm and 13mm, respectively. The diameter of each of the six mounting holes 7 is smaller than the diameter of the aperture.

[0039] Regarding the pull-out screw 5: The pull-out screw 5 includes a head 8, a straight rod 9, and a threaded rod 10 connected sequentially from top to bottom. The nominal diameters of the straight rod 9 and the threaded rod 10 are the same and both smaller than the nominal diameter of the head 8. The dimensions of the threaded hole and the smooth hole are adapted to the dimensions of the head 8. The dimensions of the mounting hole 7 are adapted to the dimensions of the straight rod 9 and the threaded rod 10.

[0040] The working principle of the practical manual pin puller is as follows: firstly, the pull rod 1 is rotated out of the base 3, then the plug plate 6 is inserted into the plug channel, the installation hole 7 with the required size is aligned with the light hole, after the alignment is completed, the pull screw 5 is inserted into the installation hole 7 from top to bottom, then the bottom of the pull rod 1 is screwed in the threaded hole, finally, the threaded rod 10 of the pull screw is screwed on the pin to be pulled out, the operator holds the impact handle 4 and moves up and down, so that the pin can be pulled out from the pin hole, during the up and down movement of the impact handle 4, the limiting disc 2 limits the upward movement of the impact handle 4, and the limiting disc 2 is prevented from being separated from the pull rod 1.

[0041] The embodiment 2 of the practical manual pin puller is provided in the utility model.

[0042] The difference between the embodiment 2 and the embodiment 1 is mainly as follows:

[0043] In the embodiment 1, the number of the installation holes is six.

[0044] In the embodiment, the number and size of the installation holes are determined according to the situation.

[0045] The embodiment 3 of the practical manual pin puller is provided in the utility model.

[0046] The difference between the embodiment 3 and the embodiment 1 is mainly as follows:

[0047] In the embodiment 1, the left and right ends of the plug plate have outward convex arc segments.

[0048] In the embodiment, the left and right ends of the plug plate are straight line segments.

[0049] According to the above description of the present specification, those skilled in the art can also understand the terms used as follows, for example, the terms indicating the orientation or positional relationship such as "upper", "lower", "front", "rear", "left", "right", "width", "horizontal", "top", "bottom", "inner", "outer" and the like are based on the orientation or positional relationship shown in the drawings of the present specification, and are only for the purpose of facilitating the description of the scheme of the present utility model and simplifying the description, and do not explicitly or implicitly indicate or suggest that the devices or elements involved must have the specific orientation, be constructed and operated in the specific orientation, therefore, the above-mentioned orientation or positional relationship terms cannot be understood or interpreted as a limitation on the scheme of the present utility model.

[0050] In addition, in the description of the present specification, the meaning of "a plurality of" is at least two, for example, two, three or more, etc., unless otherwise specifically limited.

Claims

1. A practical manual pin puller, characterized in that, include: The pull rod has a limiting plate at the top and threads on the outer surface of the bottom so that it can be screwed onto the base. An impact handle is fitted on the pull rod between the limiting plate and the base. The base is hollow inside and consists of a threaded hole section and a smooth hole section from top to bottom. The threaded hole is used to screw on the pull rod, and the smooth hole is used to install the pull-out screw. The two opposite sides of the smooth hole section are open to form an insertion channel for inserting the insert plate. An insert plate is inserted into the insertion channel. The insert plate has multiple mounting holes of different diameters, and the diameter of the mounting holes is smaller than the diameter of the optical aperture. The screw is pulled out, which includes a head, a straight rod, and a threaded rod connected in sequence from top to bottom. The nominal diameters of the straight rod and the threaded rod are the same and smaller than the nominal diameter of the head. The dimensions of the threaded hole and the open hole are adapted to the dimensions of the head, and the dimensions of the mounting hole are adapted to the dimensions of the straight rod and the threaded rod.

2. The practical manual pin puller according to claim 1, characterized in that, The impact handle has a gripping groove for gripping the impact handle.

3. The practical manual pin puller according to claim 2, characterized in that, The number of grip grooves is two, and the two grip grooves are opened on opposite sides of the impact handle.

4. The practical manual pin puller according to any one of claims 1 to 3, characterized in that, The base has an inverted T-shaped cross-section, which includes a vertical section and a horizontal section, and the insertion channel is located at the connection between the horizontal section and the vertical section.

5. The practical manual pin puller according to any one of claims 1 to 3, characterized in that, The mounting holes are evenly spaced along the length of the insert plate.

6. The practical manual pin puller according to claim 5, characterized in that, The number of mounting holes is six.

7. The practical manual pin puller according to claim 6, characterized in that, The diameters of the six mounting holes are 5mm, 6mm, 7mm, 9mm, 11mm and 13mm, respectively.

8. The practical manual pin puller according to any one of claims 1 to 3, characterized in that, The insert plate has a rectangular structure with outwardly convex arc-shaped segments at both ends along its length.

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