A pin extractor

Abstract

The utility model relates to the technical field of part dismounting fixture, disclose a kind of pin puller, including support, clamping structure, drive assembly and support, and guiding passage is provided on support;Clamping structure is slidably arranged in guiding passage along first direction, and clamping structure is used to and the clamping of positioning pin to be dismounted;Drive assembly is installed on support, and the output end of drive assembly is connected with clamping structure transmission, to drive clamping structure moves in guiding passage along first direction, drive assembly is pneumatic hydraulic jack, uses compressed air as driving force, and hydraulic system generates working force, without sharp and harsh impact noise, without manually generating pin pulling force, more labor-saving;Support is hinged on support, and it can be switched between supporting state and folding state, when not using pin puller, support is put down, in supporting state, can smoothly place pin puller, avoid to turn over;When using pin puller, support is folded, avoid to influence the use of pin puller.

Description

Technical Field

[0001] This utility model relates to the field of parts disassembly fixtures, and in particular to a pin puller. Background Technology

[0002] Currently, the stamping die manufacturing industry and tooling fixture manufacturing industry require a large number of locating pins during the manufacturing process of dies and fixtures. During the repeated debugging of dies and disassembly of fixtures, all installed locating pins need to be removed. Because the locating pins are interference-fitted, removing them presents significant challenges. This removal process currently mainly uses an impact hammer pin puller. However, using an impact hammer pin puller generates considerable noise, is tiring to operate, and the puller is prone to tipping over when not in use. Utility Model Content

[0003] The purpose of this invention is to propose a pin puller that solves the technical problems of existing pin pullers using impact hammers, which generate significant noise, are tiring to operate, and are prone to tipping over when not in use.

[0004] To achieve this objective, the present invention adopts the following technical solution:

[0005] This utility model provides a pin puller, comprising:

[0006] Support, wherein a guide channel is provided on the support;

[0007] A snap-fit ​​structure is slidably disposed in the guide channel along a first direction, and the snap-fit ​​structure is used to snap-fit ​​with the positioning pin to be disassembled.

[0008] A drive assembly is mounted on the support, and the output end of the drive assembly is connected to the snap-fit ​​structure for driving the snap-fit ​​structure to move in the guide channel along the first direction. The drive assembly is a pneumatic-hydraulic jack.

[0009] A bracket, which is hinged to the support and can switch between a supported state and a folded state.

[0010] The pin puller has a guide channel on its support. The locking structure is slidably disposed in the guide channel along a first direction. The drive component is mounted on the support, and the output end of the drive component is connected to the locking structure for transmission, so as to drive the locking structure to move in the guide channel along the first direction, thereby moving the locking structure to remove the positioning pin. The drive component is a pneumatic hydraulic jack, using compressed air as the driving force. The hydraulic system generates the working force, and the noise is controlled within a certain decibel level. There is no sharp and piercing impact noise, and no manual pin pulling force is required, which is relatively labor-saving. The pin puller also includes a bracket, which is hinged to the support and can switch between a supported state and a folded state. When the pin puller is not in use, the bracket is lowered and in the supported state, which can stably place the pin puller and prevent it from tipping over. When the pin puller is in use, the bracket is folded up to avoid affecting the use of the pin puller.

[0011] As a preferred embodiment of the aforementioned pin puller, the support is provided with a locking component for locking the support to the support when the bracket is in the supported state.

[0012] The locking assembly is used to lock the bracket to the support when the bracket is in the supported state, preventing the bracket from rotating when the pin puller is stored and avoiding the pin puller from tipping over.

[0013] As a preferred embodiment of the aforementioned pin puller, the locking assembly includes a baffle and a first locking member. The baffle is rotatably mounted on the support via the first locking member, and the baffle is locked after it is rotated into position.

[0014] The locking component described above has a simple structure and is easy to manufacture. It can stop the bracket from rotating when it is in a supported state, thus preventing the pin puller from tipping over.

[0015] As a preferred embodiment of the aforementioned pin puller, the support is provided with a groove, and when the bracket is in the supported state, a portion of the bracket structure is accommodated within the groove.

[0016] The groove design allows part of the support structure to be housed within the groove when the support is in a supported state, and the support can be locked in place by a locking component, making the support more stable in the supported state.

[0017] As a preferred embodiment of the aforementioned pin puller, the support includes:

[0018] The support frame includes a support base and support columns on both sides of the bottom of the support base. The drive assembly is mounted on the support base. The bottom of the support columns is provided with the bottom plate. The support base, the support columns and the bottom plate form the guide channel.

[0019] The support includes a support frame and a base plate. The support base of the support frame supports the drive assembly. The support base, support column and base plate form a guide channel, which guides the movement of the snap-fit ​​structure. The support frame has a simple structure and is easy to manufacture.

[0020] As a preferred embodiment of the aforementioned pin puller, a guide groove is provided on the inner side of the support column, the guide groove extends along the first direction, and a guide protrusion that cooperates with the guide groove is provided on the snap-fit ​​structure.

[0021] The combination of the guide groove and the guide protrusion can guide the movement of the snap-fit ​​structure and prevent the snap-fit ​​structure from deflecting during the movement.

[0022] As a preferred embodiment of the aforementioned pin puller, the snap-fit ​​structure is provided with a snap-fit ​​opening, the snap-fit ​​opening penetrates at least one side of the snap-fit ​​structure where the support column is not provided, and the base plate is provided with a through-hole communicating with the snap-fit ​​opening, the through-hole penetrating the upper and lower sides of the base plate, and the orientation of the through-hole is consistent with the orientation of the snap-fit ​​opening.

[0023] The snap-fit ​​structure has a snap-fit ​​opening that penetrates at least one side of the snap-fit ​​structure without a support column, and a through-hole on the base plate penetrates both the upper and lower sides of the base plate, with the through-hole facing the same direction as the snap-fit ​​opening. Even if the positioning pin is close to the side wall of the fault, the positioning pin can be disassembled through the snap-fit ​​opening and the through-hole. This snap-fit ​​structure has a wide range of adaptability.

[0024] As a preferred embodiment of the aforementioned pin puller, the bracket is provided in two sets, and the two sets of brackets are rotatably disposed on opposite sides of the support.

[0025] Two sets of brackets are set up, which are rotatably mounted on opposite sides of the support. When the brackets are in the supported state, they can stably support the entire device; when the brackets are in the folded state, they do not affect the use of the pin puller.

[0026] As a preferred embodiment of the aforementioned pin puller, the bracket is rotatably mounted on the support via a second locking member. The second locking member includes a head, a cylindrical rod, and a screw part connected in sequence. The cylindrical rod is rotatably mounted on the support and connected to the support via the screw part.

[0027] The bracket is rotatably mounted on the support via the second locking member. The cylindrical rod can act as a pivot and for positioning, while the screw can lock the bracket in any position. The head design prevents the second locking member from being over-tightened, thus serving as a limit.

[0028] As a preferred embodiment of the aforementioned pin puller, the pin puller further includes a handrail frame, and the drive assembly is mounted on the handrail frame.

[0029] The drive assembly is mounted on the handrail frame, and the pin puller is stabilized by holding the handrail frame when removing the locating pin.

[0030] The beneficial effects of this utility model are:

[0031] The pin puller proposed in this utility model has a guide channel on the support. The locking structure is slidably disposed in the guide channel along a first direction. The drive component is installed on the support, and the output end of the drive component is connected to the locking structure for transmission, so as to drive the locking structure to move in the guide channel along the first direction, thereby enabling the locking structure to move and remove the positioning pin. The drive component is a pneumatic hydraulic jack, using compressed air as the driving force. The hydraulic system generates the working force, and the noise is controlled within a certain decibel level, without sharp and piercing impact noise. There is no need to manually generate the pin pulling force, which is more labor-saving. The pin puller also includes a bracket, which is hinged to the support and can switch between a supported state and a folded state. When the pin puller is not in use, the bracket is lowered and in the supported state, which can stably place the pin puller and prevent it from tipping over. When the pin puller is in use, the bracket is folded up to avoid affecting the use of the pin puller. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the first structure of the pin puller provided by this utility model;

[0033] Figure 2 This is a schematic diagram of the second structure of the pin puller provided by this utility model;

[0034] Figure 3 This is a schematic diagram of the structure of the pin puller bracket provided by this utility model when it is in a supported state;

[0035] Figure 4 This is a structural diagram of the support, snap-fit ​​structure, and positioning pin provided by this utility model;

[0036] Figure 5 This is a structural schematic diagram of the second locking member provided by this utility model.

[0037] In the picture:

[0038] 1. Support; 10. Guide channel; 11. Support frame; 111. Support base; 112. Support column; 1121. Guide groove; 1122. Groove; 12. Base plate; 121. Through-hole;

[0039] 2. Snap-fit ​​structure; 21. Guide protrusion; 22. Bayonet;

[0040] 3. Drive assembly; 31. Cylinder; 310. Air pipe; 311. Switch; 32. Hydraulic cylinder; 321. Piston;

[0041] 4. Bracket; 41. Second locking element; 411. Head; 4111. Socket hexagonal groove; 412. Cylindrical rod; 413. Screw rod; 42. Support rod; 43. Crossbar;

[0042] 5. Locking assembly; 51. Baffle; 52. First locking element; 53. Fixing element;

[0043] 6. Handrail frame;

[0044] 100. Locating pin; 101. Pull-out screw. Detailed Implementation

[0045] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar parts or parts having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0046] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or the internal communication of two components or the interaction between 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.

[0047] In the description of this utility model, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0048] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0049] like Figures 1-3 As shown, this embodiment provides a pin puller, including a support 1, a snap-fit ​​structure 2, a drive assembly 3, and a bracket 4. The support 1 is provided with a guide channel 10; the snap-fit ​​structure 2 is positioned along a first direction ( Figure 1The bracket 4 is slidably disposed in the guide channel 10 in the middle height direction. The snap-fit ​​structure 2 is used to snap-fit ​​with the positioning pin 100 to be disassembled. The drive component 3 is installed on the support 1, and the output end of the drive component 3 is connected to the snap-fit ​​structure 2 for transmission, so as to drive the snap-fit ​​structure 2 to move in the first direction in the guide channel 10. The drive component 3 is a pneumatic hydraulic jack. The bracket 4 is hinged to the support 1 and can switch between the supported state and the folded state.

[0050] The pin puller has a guide channel 10 on its support 1. The locking structure 2 is slidably disposed in the guide channel 10 along the first direction. The drive component 3 is mounted on the support 1. The output end of the drive component 3 is connected to the locking structure 2 to drive the locking structure 2 to move along the first direction in the guide channel 10, thereby moving the locking structure 2 to remove the positioning pin 100. The drive component 3 is a pneumatic hydraulic jack, using compressed air as the driving force. The hydraulic system generates working force, and the noise is controlled within a certain decibel level. There is no sharp and piercing impact noise, and no manual pin pulling force is required, which is more labor-saving. The pin puller also includes a bracket 4, which is hinged to the support 1 and can switch between a supported state and a folded state. When the pin puller is not in use, the bracket 4 is lowered and in a supported state, which can stably place the pin puller and prevent it from tipping over. When the pin puller is in use, the bracket 4 is folded up to avoid affecting the use of the pin puller.

[0051] It should be noted that the positioning pin 100 to be disassembled includes the positioning pin body and the pin-pulling screw 101 that can be detachably installed on the positioning pin body. The pin-pulling screw 101 is engaged by the snap-fit ​​structure 2, thereby disassembling the entire positioning pin 100.

[0052] Specifically, such as Figure 4 As shown, the support 1 includes a support frame 11 and a base plate 12. The support frame 11 includes a support base 111 and support columns 112 on both sides of the bottom of the support base 111. The drive assembly 3 is mounted on the support base 111, and the support base 111 supports the drive assembly 3. The base plate 12 is provided at the bottom of the support columns 112. The support base 111, the support columns 112 and the base plate 12 form a guide channel 10, which guides the movement of the snap-fit ​​structure 2. The support 1 has a simple structure and is easy to manufacture.

[0053] The support base 111 and the support column 112 are an integral structure. The base plate 12 is detachably connected to the two sets of support columns 112, facilitating the installation of the snap-fit ​​structure 2 within the guide channel 10. In this embodiment, the base plate 12 and the support column 112 are connected by pull pin screws 101. Specifically, the base plate 12 is connected to the support column 112 at each of its four corners by pull pin screws 101, thereby connecting the base plate 12 and the support column 112.

[0054] Furthermore, a guide groove 1121 is provided on the inner side of the support column 112, and the guide groove 1121 extends along the first direction. A guide protrusion 21 that cooperates with the guide groove 1121 is provided on the snap-fit ​​structure 2. The cooperation between the guide groove 1121 and the guide protrusion 21 can guide the movement of the snap-fit ​​structure 2 and prevent the snap-fit ​​structure 2 from deflecting during the movement.

[0055] In this embodiment, guide grooves 1121 are provided on both sides of the support column 112. Correspondingly, guide protrusions 21 are provided at the corresponding positions of the snap-fit ​​structure 2. Each support column 112 cooperates with the snap-fit ​​structure 2 through two sets of guide grooves 1121, making the movement of the snap-fit ​​structure 2 more stable.

[0056] Optionally, a groove 1122 is provided on the outer side of the support column 112 of the support 1. When the support 4 is in the supported state, part of the structure of the support 4 is accommodated in the groove 1122, which can make the support of the support 4 more stable.

[0057] like Figure 1 As shown, a locking component 5 is provided on the support 1, which is used to lock the support 4 and the support 1 when the support 4 is in the supported state, so as to prevent the support 4 from rotating when storing the pin puller and avoid the pin puller from tipping over.

[0058] Specifically, the locking assembly 5 includes a baffle 51 and a first locking member 52. One end of the baffle 51 is rotatably mounted on the bracket 4 via the first locking member 52, and the baffle 51 is locked after it is rotated into position. The locking assembly 5 has a simple structure, is easy to manufacture, and can stop the bracket 4, thereby preventing the bracket 4 from rotating in the supported state and preventing the pin puller from tipping over.

[0059] Optionally, the locking assembly 5 further includes a fixing member 53, which is installed at the other end of the baffle 51 and located on the side of the baffle 51 opposite to the support 1. The fixing member 53 facilitates the adjustment of the rotation angle of the baffle 51, making operation convenient. In this embodiment, the fixing member 53 is a dish screw.

[0060] When the bracket 4 is in the supported state, part of the structure of the bracket 4 is housed in the groove 1122 of the support frame 11, and the bracket 4 is locked by the locking component 5, making the bracket 4 more stable in the supported state.

[0061] Optionally, the snap-fit ​​structure 2 is provided with a snap-fit ​​opening 22, which penetrates at least one side of the snap-fit ​​structure 2 where the support column 112 is not provided. The base plate 12 is provided with a through-hole 121 that communicates with the snap-fit ​​opening 22. The through-hole 121 penetrates the upper and lower sides of the base plate 12, and the orientation of the through-hole 121 is consistent with the orientation of the snap-fit ​​opening 22. Even if the positioning pin 100 is close to the side wall of the fault, the positioning pin 100 can be disassembled through the snap-fit ​​opening 22 and the through-hole 121. The snap-fit ​​structure 2 has a wide range of adaptability.

[0062] like Figure 1 As shown, in this embodiment, two sets of brackets 4 are provided, and the two sets of brackets 4 are rotatably arranged on opposite sides of the support 1. When the brackets 4 are in the supporting state, they can stably support the entire device; when the brackets 4 are in the folded state, they do not affect the use of the pin puller.

[0063] Furthermore, the bracket 4 is rotatably mounted on the support 1 via the second locking member 41, as shown below. Figure 5 As shown, the second locking member 41 includes a head 411, a cylindrical rod 412, and a screw 413 connected in sequence. The head 411 has an internal hexagonal groove 4111 for easy operation with tools. The cylindrical rod 412 is rotatably mounted on the support 1 and connected to the support 1 via the screw 413. The bracket 4 is rotatably mounted on the support 1 via the second locking member 41. The cylindrical rod 412 acts as a pivot and provides positioning, while the screw 413 locks the bracket 4 in any position. The head 411 prevents over-tightening of the second locking member 41, thus providing a limiting function. Furthermore, the internal hexagonal groove 4111 on the head 411 facilitates disassembly and other operations of the second locking member 41. In this embodiment, the second locking member 41 is a height-adjustable screw.

[0064] like Figure 1 As shown, the bracket 4 includes two sets of parallel and spaced-apart support rods 42, with a crossbar 43 connecting the two sets of support rods 42. The support rods 42 and the crossbar 43 form an H-shaped structure, and the two sets of support rods 42 intersect with the support 1. This bracket 4 has a simple structure and is easy to manufacture. When the bracket 4 is in the supported state, the crossbar 43 of the bracket 4 is housed in the groove 1122 of the support column 112, and the bracket 4 is locked by the locking component 5, making the bracket 4 more stable in the supported state.

[0065] Optionally, the drive assembly 3 includes a pneumatic cylinder 31 and a hydraulic cylinder 32, which are connected to each other. The pneumatic cylinder 31 is connected to an air supply device via an air pipe 310. The piston 321 of the hydraulic cylinder 32 is threadedly connected to the snap-fit ​​structure 2. When the piston 321 rotates, it drives the snap-fit ​​structure 2 to move up and down in the first direction. The drive assembly 3 uses compressed air from the pneumatic cylinder 31 as power, and the hydraulic cylinder 32 generates working force to drive the piston 321 to rotate, thereby moving the snap-fit ​​structure 2 in the first direction. This results in low operating noise, a safer and less labor-intensive pin-removing process, no damage to precision mold parts, and higher efficiency.

[0066] Optionally, the pin puller also includes a handrail frame 6, with a pneumatic cylinder 31 and a hydraulic cylinder 32 disposed within the handrail frame 6. The air pipe 310 of the pneumatic cylinder 31 passes through the handrail frame 6, and a switch 311 is installed on the handrail frame 6, with the switch 311 positioned on the air pipe 310 to control the on / off state of the air pipe 310. When disassembling the positioning pin 100, only the handrail frame 6 needs to be held, eliminating the risk of hand injury. Furthermore, the pin pulling process only requires pressing the switch 311; the pulling force is generated by the pneumatic cylinder 31 and the hydraulic cylinder 32, eliminating the need for manual generation of the pulling force.

[0067] When disassembling the locating pin 100, install the pin-pulling screw 101 onto the locating pin body and install a washer between the two.

[0068] Align the snap-fit ​​22 of the snap-fit ​​structure 2 with the pull-out screw 101, so that the pull-out screw 101 extends into the snap-fit ​​22 of the snap-fit ​​structure 2 and passes through the through-hole 121 of the base plate 12.

[0069] When the drive assembly 3 is started, the piston 321 of the hydraulic cylinder 32 rotates, causing the snap-fit ​​structure 2 to rise in the first direction to remove the locating pin 100.

[0070] After the positioning pin 100 is removed, the snap-fit ​​structure 2 is reset for future use.

[0071] This pin puller has the following advantages:

[0072] 1. Low operating noise: Compressed air is used as the driving force, and the hydraulic system generates working force. The noise is controlled within a certain decibel level, and there is no sharp or piercing impact noise.

[0073] 2. Safety: During the pin removal process, the operator only needs to hold onto the handrail frame 6 of the pin remover, and there is no risk of injury to the hand.

[0074] 3. Effortless: During the pin pulling process, you only need to press switch 311 by hand. The pin pulling force is generated by the air pressure and hydraulic system, and there is no need to manually generate the pin pulling force.

[0075] 4. No damage to precision mold parts: There is no impact, vibration or slippage during the pin pulling process, and it will not damage the precision mold parts.

[0076] 5. High efficiency: During the pin removal process, air pressure continuously drives the hydraulic system, resulting in fast pin removal speed.

[0077] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A pin puller, characterized in that, include: Support (1), on which a guide channel (10) is provided; A snap-fit ​​structure (2) is slidably disposed in the guide channel (10) along the first direction. The snap-fit ​​structure (2) is used to snap-fit ​​with the positioning pin (100) to be disassembled. The drive assembly (3) is mounted on the support (1), and the output end of the drive assembly (3) is connected to the snap-fit ​​structure (2) for transmission, so as to drive the snap-fit ​​structure (2) to move in the guide channel (10) along the first direction. The drive assembly (3) is a pneumatic hydraulic jack. The bracket (4) is hinged to the support (1) and can switch between a supported state and a folded state.

2. The pin puller according to claim 1, characterized in that, The support (1) is provided with a locking component (5) for locking the bracket (4) to the support (1) when the bracket (4) is in the supported state.

3. The pin puller according to claim 2, characterized in that, The locking component (5) includes a baffle (51) and a first locking member (52). The baffle (51) is rotatably mounted on the support (1) by the first locking member (52), and the baffle (51) is locked after it is rotated into place.

4. The pin puller according to claim 1, characterized in that, The support (1) is provided with a groove (1122), and when the bracket (4) is in the supported state, part of the structure of the bracket (4) is accommodated in the groove (1122).

5. The pin puller according to claim 1, characterized in that, The support (1) includes: The support frame (11) and the base plate (12) are provided. The support frame (11) includes a support base (111) and support columns (112) on both sides of the bottom of the support base (111). The drive assembly (3) is installed on the support base (111). The base plate (12) is provided at the bottom of the support columns (112). The support base (111), the support columns (112) and the base plate (12) form the guide channel (10).

6. The pin puller according to claim 5, characterized in that, The inner side of the support column (112) is provided with a guide groove (1121), the guide groove (1121) extends along the first direction, and the snap-fit ​​structure (2) is provided with a guide protrusion (21) that cooperates with the guide groove (1121).

7. The pin puller according to claim 5, characterized in that, The snap-fit ​​structure (2) is provided with a snap-fit ​​opening (22), which penetrates at least one side of the snap-fit ​​structure (2) where the support column (112) is not provided. The base plate (12) is provided with a through-hole (121) that communicates with the snap-fit ​​opening (22). The through-hole (121) penetrates the upper and lower sides of the base plate (12), and the orientation of the through-hole (121) is consistent with the orientation of the snap-fit ​​opening (22).

8. The pin puller according to any one of claims 1-7, characterized in that, The bracket (4) is provided in two sets, and the two sets of brackets (4) are rotatably arranged on opposite sides of the support (1).

9. The pin puller according to any one of claims 1-7, characterized in that, The bracket (4) is rotatably mounted on the support (1) via a second locking member (41). The second locking member (41) includes a head (411), a cylindrical rod (412), and a screw (413) connected in sequence. The cylindrical rod (412) is rotatably mounted on the support (1) and connected to the support (1) via the screw (413).

10. The pin puller according to any one of claims 1-7, characterized in that, The pin puller also includes a handrail frame (6), and the drive assembly (3) is mounted on the handrail frame (6).

Images