Die positioning pin with tapered head

Abstract

The utility model discloses a die positioning pin with a tapered head, which comprises a positioning component, a positioning component and a positioning component, and the positioning component comprises an upper pin rod, a tapered rod, a lower pin rod, a stepped rod and a threaded rod; the taper rod is located below the upper pin rod, the lower pin rod is fixed to the bottom end of the taper rod, the step rod is fixed to the bottom end of the lower pin rod, and the threaded rod is embedded into the bottom end of the step rod in a threaded mode. The positioning pin is divided into three sections in the height direction, namely the upper pin rod, the lower pin rod and the threaded rod, the upper part and the lower part are rods with different diameters and middle taper and are used for transition, the bottom threaded rod is in threaded connection with the interior of the bottom end of the step rod, and the material is changed into P20, so that the contact area between a mechanical arm for taking and placing parts and the positioning pin is reduced, and the friction resistance is reduced; and the threaded rod is made into a split body and is made of a P20 soft material, so that the bending resistance and fracture resistance of the pin are enhanced.

Description

Technical Field

[0001] This utility model relates to the field of positioning pin technology, and in particular to a mold positioning pin with a tapered head. Background Technology

[0002] A locating pin is a part used to restrict the degrees of freedom of an object. Its main function is to use the workpiece hole as a positioning reference to restrict the object's degrees of freedom of movement in various directions. This design ensures that the parts can maintain their positional relationship accurately during processing and assembly. Locating pins are also used in the mold production process.

[0003] In the production process of existing molds, the robot arm continuously picks up and places parts. During this process, the side wall of the positioning pin and the side wall of the positioning hole of the material sheet are in continuous contact, generating frictional resistance. After several thousand strokes, the titanium plating on the side wall of the pin will peel off, and the exposed base surface will develop roughness. As the number of strokes increases, the roughness area and depth will continue to increase. The resistance of the robot arm in picking up and placing parts will also continue to increase. When it reaches a certain level, the product will get stuck on the side wall of the pin, causing product surface deformation, pin breakage, and misalignment of the gripper, which seriously affects production efficiency and safety. Utility Model Content

[0004] The purpose of this utility model is to provide a mold positioning pin with a tapered head, in order to solve the problem mentioned in the background art that, during the production process of existing molds, the robot arm continuously picks up and places parts. At this time, the side wall of the positioning pin is in continuous contact with the side wall of the positioning hole of the material sheet, generating frictional resistance. After accumulating thousands of strokes, the titanium coating on the side wall of the pin will fall off, and the exposed base surface will produce roughness. With the accumulation of strokes, the roughness area and depth will continue to increase, and the resistance of the robot arm in picking up and placing parts will also continue to increase. When it reaches a certain extent, the product will get stuck on the side wall of the pin, causing product surface deformation, pin breakage, and misalignment of the gripper, which seriously affects production efficiency and safety.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model relates to a mold positioning pin with a tapered head, comprising:

[0007] A positioning assembly, comprising an upper pin, a tapered pin, a lower pin, a stepped pin, and a threaded pin;

[0008] The tapered rod is located below the upper pin, the lower pin is fixed to the bottom end of the tapered rod, the stepped rod is fixed to the bottom end of the lower pin, and the threaded rod is threadedly embedded inside the bottom end of the stepped rod.

[0009] Furthermore, the upper pin has a size of 14Φ, the lower pin has a size of 16Φ, and the tapered rod is a transition rod;

[0010] The single-sided clearance between the upper pin, the lower pin, and the tapered rod is 1.5mm.

[0011] Furthermore, the device also includes a connection component;

[0012] The connecting assembly includes a slot, a protective cover, an annular groove, a first spring, and a vertical rod;

[0013] The slot is located at the bottom of the upper pin and the top of the tapered rod. The protective cover is slidably connected to the outer periphery of the slot. The annular groove is located inside the bottom of the upper pin. The first spring is fixed inside the annular groove. The vertical rod is fixed inside the bottom of the upper pin.

[0014] Furthermore, a lower groove is provided inside the upper end of the tapered rod, and a telescopic rod is fixedly connected to the bottom end of the lower groove. Magnetic blocks are fixedly connected to the bottom end of the vertical rod and the top end of the telescopic rod.

[0015] The top of the tapered rod is fixedly connected to an annular plate, which is engaged with the annular groove.

[0016] Furthermore, the vertical rod has an upper groove inside the bottom end of the upper pin, and the upper groove is connected to the lower groove;

[0017] The inner part of the protective cover is threadedly connected to the surface of the slot below.

[0018] Furthermore, a second spring is fixedly connected inside the lower groove, and the telescopic rod is located inside the second spring, with the top end of the second spring fixedly connected to the top end of the telescopic rod.

[0019] Compared with existing technologies, the advantages of this utility model are:

[0020] I. This utility model features a positioning pin with three sections along its height: an upper pin, a lower pin, and a threaded rod. The upper and lower sections have different diameters, with a tapered rod in the middle for transition. The bottom threaded rod is threaded into the bottom of the stepped rod and made of P20 material. This modification reduces the contact area between the robot arm and the positioning pin, thus reducing frictional resistance and making the picking and placing of parts smoother. The threaded rod is made in sections and made of soft P20 material, enhancing the pin's resistance to bending and breakage. After these improvements, the robot arm picks and places parts smoothly and stably, reducing frictional resistance and preventing product surface deformation. The positioning pin's strength is increased, reducing the frequency of damage and thus lowering the probability of abnormal downtime and improving production safety and stability.

[0021] II. Based on the first beneficial effect, by setting up a slot, a protective cover, a first spring, a second spring, a telescopic rod, a vertical rod, and a magnetic block, the magnetic blocks attract each other. Rotating the protective cover causes the tapered rod to move upward through the second spring, so that the annular plate is inserted into the annular groove and squeezes the first spring. When the protective cover rotates to the bottom of the slot, the upper pin and the tapered rod are firmly connected together, which allows the tapered rod to be replaced when fatigue cracks occur. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the appearance and structure of this utility model;

[0024] Figure 2 This is a schematic cross-sectional view of the connecting component of this utility model;

[0025] Figure 3 This is a schematic diagram of the upper cross-sectional structure of the connecting component of this utility model;

[0026] Figure 4 This is a schematic diagram of the lower cross-sectional structure of the connecting component of this utility model.

[0027] The attached diagram lists the components represented by each number as follows:

[0028] 11. Upper pin; 12. Tapered rod; 13. Lower pin; 14. Stepped rod; 15. Threaded rod; 21. Slot; 22. Protective cover; 23. Annular groove; 24. First spring; 25. Vertical rod; 251. Upper groove; 26. Lower groove; 261. Annular plate; 27. Telescopic rod; 28. Magnetic block; 29. ​​Second spring. Detailed Implementation

[0029] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0030] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0031] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0032] Please see Figure 1 As shown, this embodiment is a mold positioning pin with a tapered head, comprising:

[0033] The positioning assembly includes an upper pin 11, a tapered rod 12, a lower pin 13, a stepped rod 14, and a threaded rod 15.

[0034] Tapered rod 12 is located below upper pin 11, lower pin 13 is fixed to the bottom end of tapered rod 12, stepped rod 14 is fixed to the bottom end of lower pin 13, and threaded rod 15 is threadedly embedded in the bottom end of stepped rod 14.

[0035] The upper pin 11, lower pin 13, tapered pin 12, stepped pin 14 and threaded pin 15 are all used to position the mold. The threaded pin 15 is made of soft material, which increases the toughness of the thread and makes it less likely to break under lateral force.

[0036] The upper pin 11 has a size of 14Φ, the lower pin 13 has a size of 16Φ, and the tapered rod 12 is a transition rod;

[0037] The single-sided clearance between the upper pin 11, the lower pin 13 and the tapered rod 12 is 1.5mm;

[0038] In the vertical direction, the different sizes of the rods reduce the contact area between the robot arm and the positioning pin, thereby reducing frictional resistance and making the picking and placing of parts smoother;

[0039] Working principle:

[0040] When in use, the single-sided gap is 1.5mm, making the initial feeding smoother. The material sheet passes through the upper pin 11 and the tapered rod 12. The tapered rod 12 provides coarse guidance and fine guidance when it reaches the bottom. The frictional resistance during the feeding process is small and does not affect the forming accuracy.

[0041] Before the improvement, the one-piece pin was made of hard material. Due to processing limitations, the bottom threaded rod 15 had to have a relief groove. The structural and material limitations meant that this part could not withstand large lateral forces and was easy to break during actual production. After the improvement, the split threaded rod 15 can avoid the relief groove structure, and the material can also be a soft material with toughness, thereby improving the overall strength of the positioning pin.

[0042] The above steps, by making the positioning pin into three sections in the height direction with different diameters at the top and bottom and a tapered transition in the middle, make it easier for the robotic arm to pick up and place parts.

[0043] Please see Figures 1-4 As shown, this embodiment, based on embodiment 1 above, further includes:

[0044] Connection components;

[0045] The connecting components include a slot 21, a protective cover 22, an annular groove 23, a first spring 24, and a vertical rod 25;

[0046] The slot 21 is opened at the bottom end of the upper pin 11 and the upper end of the tapered rod 12. The protective cover 22 is slidably connected to the outer periphery of the upper slot 21. The annular groove 23 is opened inside the bottom end of the upper pin 11. The first spring 24 is fixed inside the annular groove 23. The vertical rod 25 is fixed inside the bottom end of the upper pin 11.

[0047] The slot 21 is used for connecting and moving the protective cover 22. The protective cover 22 is used to protect the connection between the upper pin 11 and the tapered rod 12. The annular groove 23 is used for placing the first spring 24 and inserting the annular plate 261. The first spring 24 is used for pushing the annular plate 261. The vertical rod 25 is used for connecting the magnetic block 28.

[0048] The tapered rod 12 has a lower groove 26 inside its upper end. A telescopic rod 27 is fixedly connected to the bottom of the lower groove 26. A magnetic block 28 is fixedly connected to the bottom of the vertical rod 25 and the top of the telescopic rod 27.

[0049] An annular plate 261 is fixedly connected to the top of the tapered rod 12, and the annular plate 261 is engaged with the annular groove 23;

[0050] The lower groove 26 is used for connecting and moving the telescopic rod 27, the magnetic block 28 is used for connecting the vertical rod 25 and the telescopic rod 27, and the annular plate 261 is used to push the first spring 24 in the annular groove 23.

[0051] The vertical rod 25 has an upper groove 251 inside the bottom end of the upper pin 11, and the upper groove 251 is connected to the lower groove 26;

[0052] The inner part of the protective cover 22 is threadedly connected to the surface of the lower slot 21;

[0053] The upper groove 251 is used for placing the vertical rod 25 and the magnetic block 28. The protective cover 22 is threadedly connected to the slot 21 at the top of the tapered rod 12. When the protective cover 22 is rotated, the protective cover 22 drives the tapered rod 12 to move upward, causing the internal telescopic rod 27 to retract upward, thereby making the upper pin 11 and the tapered rod 12 firmly connected together.

[0054] A second spring 29 is fixedly connected inside the lower groove 26, and a telescopic rod 27 is located inside the second spring 29. The top end of the second spring 29 is fixedly connected to the top end of the telescopic rod 27.

[0055] When the tapered rod 12 moves upward, the second spring 29 pushes the telescopic rod 27 to retract upward, so that the annular plate 261 is inserted into the annular groove 23 and squeezes the first spring 24, thereby making the upper pin 11 fit with the tapered rod 12, and then the protective cover 22 connects the two together.

[0056] Working principle:

[0057] In use, hold the upper pin 11 and the lower pin 13 with both hands, align them so that the magnetic blocks 28 attract each other, and then rotate the protective cover 22. The protective cover 22 moves downward in the slot 21. At this time, the second spring 29 pushes the telescopic rod 27 to retract upward, causing the tapered rod 12 to move upward through the second spring 29, so that the annular plate 261 is inserted into the annular groove 23 and squeezes the first spring 24. When the protective cover 22 rotates to the bottom of the slot 21, the upper pin 11 and the tapered rod 12 are in contact, and the first spring 24 and the second spring 29 are fixed, so that the upper pin 11 and the tapered rod 12 are firmly connected together.

[0058] The above steps can improve its functionality.

[0059] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0060] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A mold positioning pin with a tapered head, characterized in that, include: The positioning assembly includes an upper pin (11), a tapered rod (12), a lower pin (13), a stepped rod (14), and a threaded rod (15). The tapered rod (12) is located below the upper pin (11), the lower pin (13) is fixed to the bottom end of the tapered rod (12), the stepped rod (14) is fixed to the bottom end of the lower pin (13), and the threaded rod (15) is threadedly embedded inside the bottom end of the stepped rod (14).

2. A mold positioning pin with a tapered head according to claim 1, characterized in that, The upper pin (11) has a size of 14Φ, the lower pin (13) has a size of 16Φ, and the tapered rod (12) is a transition rod; The single-sided gap between the upper pin (11), the lower pin (13) and the tapered rod (12) is 1.5mm.

3. A mold positioning pin with a tapered head according to claim 1, characterized in that, It also includes connection components; The connecting assembly includes a slot (21), a protective cover (22), an annular groove (23), a first spring (24), and a vertical rod (25); The slot (21) is located at the bottom of the upper pin (11) and the top of the tapered rod (12). The protective cover (22) is slidably connected to the outer periphery of the slot (21). The annular groove (23) is located inside the bottom of the upper pin (11). The first spring (24) is fixed inside the annular groove (23). The vertical rod (25) is fixed inside the bottom of the upper pin (11).

4. A mold positioning pin with a tapered head according to claim 1, characterized in that, The tapered rod (12) has a lower groove (26) inside its upper end. A telescopic rod (27) is fixedly connected to the bottom of the lower groove (26). A magnetic block (28) is fixedly connected to the bottom of the vertical rod (25) and the top of the telescopic rod (27). The tapered rod (12) is fixedly connected to an annular plate (261) at its top end, and the annular plate (261) is engaged with the annular groove (23).

5. A mold positioning pin with a tapered head according to claim 3, characterized in that, The vertical rod (25) has an upper groove (251) inside the bottom end of the upper pin (11), and the upper groove (251) is connected to the lower groove (26); The inner part of the protective cover (22) is threadedly connected to the surface of the slot (21) below.

6. A mold positioning pin with a tapered head according to claim 4, characterized in that, The lower groove (26) is fixedly connected to a second spring (29), and the telescopic rod (27) is located inside the second spring (29). The top end of the second spring (29) is fixedly connected to the top end of the telescopic rod (27).

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