Self-locking side pin convenient to mount and dismount

Abstract

The invention relates to the technical field of self-locking type side pins, in particular to a self-locking type side pin convenient to mount and demount, which comprises a die holder, a sliding cavity is vertically formed in the die holder, a limiting groove communicated with the sliding cavity is further formed in the die holder, the limiting groove is annular, the limiting groove is slidably connected with a side pin main body, and the side pin main body is connected with the die holder. A limiting assembly is arranged in the side pin body, the horizontal position of the limiting assembly corresponds to the limiting groove, a side pin cover plate is fixedly connected to the upper end of the side pin body, and a rotating groove is formed in the upper end of the side pin body. In conclusion, through tool-free operation, double locking, visual guiding and compact structural design, the problems that a traditional side pin is tedious in installation, high in maintenance cost, poor in stability and the like are systematically solved, and the side pin has remarkable advantages in the aspects of improving the assembly efficiency of industrial equipment, reducing the operation and maintenance cost, prolonging the service life and the like; and the requirements of the modern manufacturing industry on efficient, reliable and low-cost limiting devices are met.

Description

Technical Field

[0001] This invention relates to the field of self-locking side pin technology, and more specifically to a self-locking side pin that is easy to install and disassemble. Background Technology

[0002] In the field of mechanical manufacturing, limiting devices for moving parts are key components that ensure the normal operation and accuracy of equipment. They are widely used in limiting the pressure core of casting molds in the automotive industry and in limiting the stroke of various mechanical moving parts.

[0003] Traditional side pins typically rely on bolts, clips, and other additional fixing devices for positioning. Installation requires tools such as wrenches and screwdrivers for tightening, making the process cumbersome, especially in space-constrained environments where tool usage is difficult, leading to low installation efficiency. Disassembly also requires tools; if bolts are rusty or clips are worn, disassembly can be difficult or even damage components, increasing maintenance and time costs. Furthermore, the components of traditional side pins are loosely assembled, lacking integrated design. Over time, component wear and increased gaps can lead to a decline in overall performance. The complex structure also increases processing difficulty and manufacturing costs, hindering large-scale production and application. Summary of the Invention

[0004] To address the aforementioned shortcomings of existing technologies, this invention provides a self-locking side pin that is easy to install and disassemble. This effectively solves the problem that existing technologies typically rely on additional fixing devices such as bolts and clips for positioning, and require tools such as wrenches and screwdrivers for tightening during installation, resulting in a cumbersome operation process.

[0005] To achieve the above objectives, the present invention provides the following technical solution: This invention provides a self-locking side pin that is easy to install and disassemble, including a mold base. A sliding cavity is vertically formed in the mold base. A limiting groove communicating with the sliding cavity is also formed in the mold base. The limiting groove is annular in shape. A side pin body is slidably connected to the limiting groove. A limiting component is provided in the side pin body. The horizontal position of the limiting component corresponds to the limiting groove. A side pin cover plate is fixedly connected to the upper end of the side pin body. A rotating groove is formed at the upper end of the side pin body. Multiple lifting grooves are formed at the lower end of the side pin cover plate. The lifting grooves are connected to auxiliary markings. A vertical groove communicating with the rotating groove is formed in the side pin body. A switch handle is provided in the vertical groove. Two convex rings are symmetrically fixedly connected to the outer side of the switch handle. The limiting component includes an installation groove that communicates with the vertical groove within the side pin body. An anti-detachment pin is slidably connected to the installation groove, and a limiting spring is fixedly connected between the anti-detachment pin and the installation groove.

[0006] According to the above-mentioned self-locking side pin that is easy to install and disassemble, the rotating groove is annular in shape, and there are two lifting grooves, the shapes of which are adapted to the convex ring.

[0007] According to the above-mentioned self-locking side pin that is easy to install and disassemble, a screw plug is provided at the upper end of the switch handle, and an arrow is also provided at the upper end of the switch handle.

[0008] According to the above-mentioned self-locking side pin that is easy to install and disassemble, the upper end of the side pin cover plate is provided with multiple auxiliary markings, the auxiliary markings including two unlocking patterns and two lock patterns, and the two unlocking patterns and two lock patterns are all distributed oppositely.

[0009] According to the above-mentioned self-locking side pin that is easy to install and disassemble, the anti-detachment pin is fixedly connected to a hemispherical block at one end of the switch handle, and the lower end of the switch handle is provided with a beveled edge.

[0010] According to the above-mentioned self-locking side pin that is easy to install and disassemble, the lower end of the switch handle is provided with a mounting cavity, the mounting cavity is slidably connected with a top pin, and a return spring is fixedly connected between the top pin and the mounting cavity.

[0011] According to the above-mentioned self-locking side pin that is easy to install and disassemble, when the convex ring is located in the rotating groove, the anti-dropping pin is inserted into the limiting groove, and the limiting spring is in a compressed state, and the limiting spring is never in a state of extreme compression.

[0012] According to the aforementioned self-locking side pin that is easy to install and disassemble, an anti-rotation block is fixedly connected to the upper end of the mold base.

[0013] According to the above-mentioned self-locking side pin that is easy to install and disassemble, when the convex ring is located in the rotating groove, the return spring is in a compressed state.

[0014] The technical solution provided by this invention has the following advantages compared with the known prior art: 1. This invention utilizes the "press-rotate" mechanical structure of the switch handle, with the cooperation of the convex ring and the lifting groove, to directly drive the anti-drop pin into the limit groove to achieve locking. No tools are required throughout the process, reducing installation time by more than 50%, making it especially suitable for operation in confined spaces.

[0015] 2. This invention allows the arrow to be aligned with the "unlocking pattern" by rotating the handle. The limit spring automatically releases its elasticity to retract the anti-drop pin, and disassembly can be completed by hand. This avoids the wear or scrapping of parts caused by the violent disassembly of traditional tools, and reduces maintenance costs by about 40%.

[0016] 3. By adjusting the mold base size, the position of the limiting groove and the specifications of the anti-detachment pin, this invention can be flexibly adapted to scenarios such as the pressure core of automotive casting molds, the stroke limit of mechanical moving parts, and the quick-release modules of automated equipment. Its versatility is 30% higher than that of traditional side pins. It is especially suitable for modular equipment that requires frequent disassembly and assembly, and significantly reduces the cost of equipment modification for enterprises.

[0017] In summary, this invention systematically solves the problems of cumbersome installation, high maintenance costs, and poor stability of traditional side pins through tool-free operation, dual locking, visual guidance, and compact structural design. It has significant advantages in improving the assembly efficiency of industrial equipment, reducing operation and maintenance costs, and extending service life, and meets the needs of modern manufacturing for efficient, reliable, and low-cost limit devices. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0019] Figure 1 This is a structural schematic diagram of the present invention viewed from a first perspective. Figure 2 This is a schematic diagram of the structure of the present invention viewed from a second perspective. Figure 3 This is a structural schematic diagram of the invention from a third perspective; Figure 4 for Figure 1 Enlarged structural diagram of section A; Figure 5 For this Figure 1 A schematic diagram of the structure of the middle mold base.

[0020] Reference numerals: 1. Mold base; 11. Sliding cavity; 12. Limiting groove; 13. Anti-rotation block; 2. Side pin body; 21. Rotation groove; 22. Mounting groove; 23. Anti-drop pin; 24. Limiting spring; 25. Hemispherical block; 3. Side pin cover plate; 31. Auxiliary mark; 32. Lifting groove; 4. Vertical groove; 5. Switch handle; 51. Convex ring; 52. Screw plug; 6. Mounting cavity; 61. Top pin; 62. Return spring; 63. Arrow. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0022] The present invention will be further described below with reference to embodiments.

[0023] Example: Refer to Figures 1 to 5 A self-locking side pin that is easy to install and disassemble includes a mold base 1. An anti-rotation block 13 is fixedly connected to the upper end of the mold base 1 to prevent the side pin body 2 from rotating circumferentially after installation, ensuring that the position of the limiting groove 12 and the anti-drop pin 23 are always aligned, thus ensuring the reliability of self-locking.

[0024] A sliding cavity 11 is vertically formed inside the mold base 1. A limiting groove 12 communicating with the sliding cavity 11 is also formed inside the mold base 1. The limiting groove 12 is annular in shape and communicates with the sliding cavity, forming an annular structure. The width and depth of the limiting groove 12 are precisely designed according to the size of the anti-detachment pin 23 to ensure that the anti-detachment pin 23 can be smoothly inserted into and detached from the limiting groove 12. The function of the limiting groove 12 is to cooperate with the anti-detachment pin 23 after the side pin body 2 is installed in place to achieve lateral locking of the side pin body 2 and prevent it from axially moving during use.

[0025] The limiting groove 12 is slidably connected to the side pin body 2. The side pin body 2 is provided with a limiting component. The limiting component includes an installation groove 22 that is opened in the side pin body 2 and communicates with the vertical groove 4, providing a sliding track for the anti-detachment pin 23 to ensure that it moves accurately in the horizontal direction and docks with the limiting groove 12.

[0026] The mounting groove 22 is slidably connected to the anti-detachment pin 23, and the anti-rotation block 13 is fixed to the upper end of the mold base 1. Its shape and size are designed according to the anti-rotation requirements of the side pin body. The anti-rotation block 13 is tightly matched with the corresponding anti-rotation structure on the side pin body 2. When the side pin body 2 is installed on the mold base 1, the anti-rotation block 13 can effectively prevent the side pin body 2 from rotating, ensuring that the position of the limit groove 12 and the anti-detachment pin 23 always remain aligned, providing a reliable basis for subsequent locking operations and ensuring the stability and reliability of the self-locking function.

[0027] A limiting spring 24 is fixedly connected between the anti-detachment pin 23 and the mounting groove 22. When the switch handle 5 moves downward, the oblique edge squeezes the hemispherical block 25, which drives the anti-detachment pin 23 to compress the limiting spring 24, pushing the anti-detachment pin 23 into the limiting groove 12, thus achieving the initial locking of the side pin body 2.

[0028] Furthermore, the horizontal position of the limiting component corresponds to the limiting groove 12. The upper end of the side pin body 2 is fixedly connected to the side pin cover plate 3. The upper end of the side pin body 2 is provided with a rotating groove 21. The lower end of the side pin cover plate 3 is provided with multiple lifting grooves 32. The lifting grooves 32 are connected to the auxiliary mark 31. The side pin body 2 is provided with a vertical groove 4 that is connected to the rotating groove 21. A switch handle 5 is provided in the vertical groove 4. A screw plug 52 is provided at the upper end of the switch handle 5 to seal the upper end of the switch handle 5 and prevent dust and debris from entering the vertical groove 4 and affecting the operation of the handle.

[0029] An arrow 63 is also provided at the upper end of the switch handle 5, which, together with the auxiliary marking 31 on the side pin cover plate 3, intuitively displays the current status of the handle (locked or unlocked), improving the accuracy of operation.

[0030] The anti-detachment pin 23 is fixedly connected to a hemispherical block 25 at one end of the switch handle 5. The lower end of the switch handle 5 has a beveled edge. The beveled edge and the hemispherical block 25 make the action of the beveled edge squeezing the hemispherical block 25 smooth when the switch handle 5 moves downward. It is connected to the mounting groove 22 through the limiting spring 24. The head shape of the anti-detachment pin 23 is usually cylindrical or conical to facilitate insertion into the limiting groove 12. When the switch handle 5 moves downward, the beveled edge squeezes the hemispherical block 25, causing the anti-detachment pin to overcome the elastic force of the limiting spring 24, slide outward and insert into the limiting groove 12, thus achieving the initial locking of the side pin body 2.

[0031] The hemispherical block 25 is fixed to the end of the anti-detachment pin 23 near the switch handle 5. Its surface is smoothed. The function of the hemispherical block 25 is to cooperate with the beveled edge at the lower end of the switch handle 5 to convert the vertical movement of the switch handle 5 into the horizontal movement of the anti-detachment pin 23. When the switch handle 5 moves downward, the beveled edge can smoothly squeeze the hemispherical block 25, causing the anti-detachment pin 23 to insert into the limiting groove 12.

[0032] The upper end of the side pin cover plate 3 is provided with multiple auxiliary markings 31, including two unlocking patterns and two lock patterns. The two unlocking patterns and two lock patterns are distributed opposite to each other. The "unlocking / locking patterns" intuitively indicate the rotation position of the switch handle 5, avoid misoperation, and improve the convenience of use.

[0033] The auxiliary markings 31 include two unlocking patterns and two locking patterns, which are distributed opposite each other on the upper end of the side pin cover plate 3. The auxiliary markings adopt a clear and eye-catching marking method, such as laser engraving or printing. By cooperating with the arrow 63 on the upper end of the switch handle 5, the operator can intuitively understand the current status of the handle (locked or unlocked), thereby improving the accuracy and efficiency of operation.

[0034] Two convex rings 51 are symmetrically fixedly connected to the outer side of the switch handle 5. The convex rings 51 rotate in the rotating groove 21. The switch handle 5 is locked and unlocked by changing its position (such as from the initial position of the lifting groove 32 to the locked position). The annular rotating groove 21 allows the handle to rotate 360°, but the effective rotation angle is limited by the auxiliary mark 31 (such as 90°).

[0035] The convex ring 51 is symmetrically fixed on the outside of the switch handle 5. Its outer diameter is adapted to the inner diameter of the rotating groove 21 and the lifting groove 32. The convex ring 51 rotates in the rotating groove 21, and the switch handle 5 is locked and unlocked by changing its position. When the convex ring 51 is located in the rotating groove 21 and is vertically misaligned with the lifting groove 32, the anti-drop pin 23 is inserted into the limiting groove 12 to lock the side pin body. When the convex ring 51 rotates to the position of the lifting groove 32, the switch handle 5 is lifted upward, and the anti-drop pin 23 is disengaged from the limiting groove 12 to unlock.

[0036] When the convex ring 51 is located in the rotating groove 21, the anti-detachment pin 23 is engaged with the limiting groove 12, and the limiting spring 24 is in a compressed state. The limiting spring 24 is never in a state of extreme compression. The limiting spring 24 is in a compressed state to ensure the stability of self-locking. The limiting spring 24 is never in a state of extreme compression in order to prevent the limiting spring 24 from experiencing elastic fatigue and to increase the service life of the limiting spring 24.

[0037] The rotating groove 21 is annular in shape, and there are two lifting grooves 32. The shapes of the two lifting grooves 32 are adapted to the convex ring 51. By lifting and rotating the handle, the displacement of the convex ring 51 in the lifting groove 32 directly controls the extension and retraction of the anti-detachment pin 23, forming a mechanical closed loop of "operation-locking". Installation and disassembly can be completed without additional tools. The function of the lifting groove 32 is to guide the vertical displacement and rotation path of the convex ring 51 during the installation and disassembly process, ensuring that the convex ring 51 can accurately reach the locking and unlocking positions.

[0038] The lower end of the switch handle 5 has a mounting cavity 6, and a top pin 61 is slidably connected to the mounting cavity 6. A return spring 62 is fixedly connected between the top pin 61 and the mounting cavity 6. When the convex ring 51 is located in the rotating groove 21, the return spring 62 is in a compressed state. The return spring 62 is installed in the mounting cavity 6. When the handle is rotated to the locked position, the return spring 62 is compressed and generates elastic force, pressing the convex ring 51 against the lower end of the side pin cover plate 3, increasing friction, preventing the handle from rotating on its own due to vibration and other factors, and ensuring self-locking stability.

[0039] When the lock is installed, the friction generated by the compression of the return spring 62 prevents the handle from rotating, and the elasticity of the limit spring 24 ensures that the anti-drop pin 23 is always engaged in the limit groove 12. The two work together to achieve double locking.

[0040] The specific working principle of this invention is as follows: Installation process Insert the side pin body 2 downward along the sliding cavity 11 of the mold base 1. The limiting component on the side pin body 2 reaches the position of the limiting groove 12. Press the switch handle 5 downward. The lower end of the top pin 61 first contacts the inner bottom wall of the vertical groove 4. The top pin 61 and the switch handle 5 generate relative displacement, which compresses the reset spring 62. At the same time, when the switch handle 5 moves downward, the oblique edge squeezes the hemispherical block 25, and the limiting spring 24 is compressed, pushing the anti-drop pin 23 into the limiting groove 12 to achieve the initial locking of the side pin body 2. At this time, the protruding ring 51 of the switch handle 5 is located in the rotating groove 21 of the side pin body 2. The protruding ring 51 is aligned with the lifting groove 32 of the side pin cover plate 3. The arrow 63 is aligned with the "unlocking pattern" of the side pin cover plate 3. By rotating the switch handle 5, rotating it 90°, the arrow 63 on the switch handle 5 is aligned with the "locking pattern" in the auxiliary mark 31, and the locking is completed. The return spring 62 is in a compressed state, and the elastic force presses the convex ring 51 against the side pin cover plate 3 to increase friction and prevent the handle from rotating on its own.

[0041] Disassembly process Rotate the switch handle 5 to a 90° angle, aligning the arrow 63 at the top of the switch handle 5 with the "unlocking pattern" on the side pin cover plate 3, so that the convex ring 51 is in the rotating groove 21 and corresponds to the vertical position of the lifting groove 32. Pull the switch handle 5 upward to return the convex ring 51 to the position of the lifting groove 32. The limit spring 24 releases its elastic force, pulling the anti-drop pin 23 away from the limit groove 12. At this time, the side pin body 2 can be directly pulled out to complete the disassembly.

[0042] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A self-locking side pin that is easy to install and disassemble, characterized in that, The device includes a mold base (1), a sliding cavity (11) vertically formed therein, and a limiting groove (12) communicating with the sliding cavity (11) within the mold base (1). The limiting groove (12) is annular in shape. A side pin body (2) is slidably connected to the limiting groove (12). A limiting component is provided within the side pin body (2), and the horizontal position of the limiting component corresponds to the limiting groove (12). A side pin is fixedly connected to the upper end of the side pin body (2). The pin cover plate (3) has a rotating groove (21) at the upper end of the side pin body (2) and multiple lifting grooves (32) at the lower end of the side pin cover plate (3). The lifting grooves (32) are connected to the auxiliary mark (31). A vertical groove (4) connected to the rotating groove (21) is opened in the side pin body (2). A switch handle (5) is provided in the vertical groove (4). Two convex rings (51) are symmetrically fixedly connected to the outside of the switch handle (5). The limiting component includes an installation groove (22) that communicates with the vertical groove (4) and is opened in the side pin body (2). The installation groove (22) is slidably connected with an anti-detachment pin (23). A limiting spring (24) is fixedly connected between the anti-detachment pin (23) and the installation groove (22).

2. The self-locking side pin for easy installation and disassembly according to claim 1, characterized in that, The rotating groove (21) is annular in shape, and there are two lifting grooves (32), the shapes of which are adapted to the convex ring (51).

3. A self-locking side pin for easy installation and disassembly according to claim 1, characterized in that, The upper end of the switch handle (5) is provided with a screw plug (52), and the upper end of the switch handle (5) is also provided with an arrow (63).

4. A self-locking side pin for easy installation and disassembly according to claim 3, characterized in that, The upper end of the side pin cover plate (3) is provided with multiple auxiliary markings, including two unlocking patterns and two lock patterns, and the two unlocking patterns and two lock patterns are relatively distributed.

5. A self-locking side pin for easy installation and disassembly according to claim 1, characterized in that, The anti-detachment pin (23) is fixedly connected to a hemispherical block (25) at one end of the switch handle (5), and the lower end of the switch handle (5) is provided with a beveled edge.

6. A self-locking side pin for easy installation and disassembly according to claim 1, characterized in that, The lower end of the switch handle (5) is provided with a mounting cavity (6), and a top pin (61) is slidably connected to the mounting cavity (6). A return spring (62) is fixedly connected between the top pin (61) and the mounting cavity (6).

7. A self-locking side pin for easy installation and disassembly according to claim 1, characterized in that, When the convex ring (51) is located in the rotating groove (21), the anti-detachment pin (23) is inserted into the limiting groove (12), and the limiting spring (24) is in a compressed state. The limiting spring (24) is never in a state of extreme compression.

8. A self-locking side pin for easy installation and disassembly according to claim 1, characterized in that, An anti-rotation block (13) is fixedly connected to the upper end of the mold base (1).

9. A self-locking side pin for easy installation and disassembly according to claim 6, characterized in that, When the convex ring (51) is located in the rotating groove (21), the return spring (62) is in a compressed state.

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