Broken knife taking-out device for thermal shrinkage knife handle

Abstract

The utility model discloses a broken knife taking-out device of a thermal shrinkage knife handle, which comprises a fixed seat connected with the thermal shrinkage knife handle, the fixed seat comprises a mounting head, the mounting head is detachably connected with an ejector pin, the ejector pin comprises an embedding part connected in the mounting head, the ejector pin comprises an ejection part exposed outside the mounting head, and the embedding part is connected with the mounting head. The thermal shrinkage cutter handle comprises an inner cavity, the fixing base is communicated with the inner cavity, the cutter containing through hole is formed in the inner cavity, and when the fixing base is located in the inner cavity, the ejector pin penetrates into the cutter containing through hole from the inner cavity. The utility model provides a broken knife taking-out device for a thermal shrinkage knife handle, which can be used for quickly taking out a broken knife, improving the working efficiency, protecting the thermal shrinkage knife handle from being damaged in the process and ensuring the completeness of a workpiece.

Description

Technical Field

[0001] This utility model relates to the field of heat shrink knife technology, and in particular to a device for removing broken heat shrink knife handles. Background Technology

[0002] For example, publication number "CN222269463U" discloses a "heat shrink tool holder". The heat shrink tool holder includes a tool holder body and a positioning element. The tool holder body has a connecting section, a first conical section, a transition section and a second conical section arranged sequentially along a first direction. The connecting section is used to connect with a machine tool. The second conical section has an inner hole for clamping the tool. The transition section has a smooth transition surface that bends away from the axis of the heat shrink tool holder. The small-diameter end of the first conical section is connected to the large-diameter end of the second conical section through the transition surface. The outer diameter of the small-diameter end of the first conical section is larger than that of the large-diameter end of the second conical section. The first conical section has a positioning hole that extends along the first direction and communicates with the inner hole. The positioning element is adjustablely positioned in the positioning hole along the first direction and is used to abut against the end of the tool. However, in practical applications, heat shrink tool holders often break. Currently, the common method to remove a broken tool is to use universal pliers, glue, or a knife to cut open the heat shrink tubing. However, all of these methods can damage the heat shrink tool holder during the removal process. Summary of the Invention

[0003] In view of the problem mentioned in the background art that the removal of a broken tool will damage the tool holder, this utility model provides a heat shrink tool holder broken tool removal device that can quickly remove the broken tool, improve work efficiency, and at the same time protect the heat shrink tool holder from damage during the process, ensuring the integrity of the workpiece.

[0004] To achieve the above objectives, the present invention adopts the following technical solution.

[0005] A device for removing broken blades from a heat-shrink knife handle includes a fixing base connected to the heat-shrink knife handle. The fixing base includes a mounting head, on which a pin is detachably connected. The pin includes a fitting portion connected within the mounting head and an ejector portion protruding outside the mounting head. The heat-shrink knife handle includes an inner cavity, and the fixing base, communicating with the inner cavity, has a blade mounting through hole disposed within the inner cavity. When the fixing base is located within the inner cavity, the pin passes through the blade mounting through hole from the inner cavity. In the prior art, when a blade breaks on a heat-shrink knife handle, the broken blade remains inside the handle. Workers often use tools such as universal pliers, glue, and knives to remove it, but this method can damage the heat-shrink knife handle. Therefore, in this application, a mounting head is provided on the mounting base, wherein the size of the mounting head is smaller than the size of the mounting base. A ejector pin is provided on the mounting head, and the ejector pin and the mounting head are detachably connected. The detachable connection includes, but is not limited to, snap-fit ​​connection, threaded connection, and plug-in connection. After the ejector pin is installed on the mounting head, the broken tool in the heat shrink tool holder can be ejected by the ejector pin. The heat shrink tool holder includes an inner cavity that can accommodate part of the mounting base and all of the mounting head. The mounting base can pass through the inner cavity into the interior of the heat shrink tool holder. The part of the heat shrink tool holder used to fix the tool is the tool mounting through hole, which is a through hole structure. When the heat shrink tool breaks, the broken tool will be stuck in the heat shrink tool holder. Due to the breakage, it cannot be directly disassembled by conventional methods. Since the broken tool is stuck in the tool mounting through hole, in this application, the mounting base with the ejector pin is installed through the inner cavity, the ejector pin on the mounting base is aligned with the tool mounting through hole, and the ejector pin is inserted into the tool mounting through hole, which can eject the broken tool from the tool mounting through hole.

[0006] Preferably, the fixed base is detachably connected to a worktable. Furthermore, in this application, the fixed base is connected to a worktable, and the connection between the fixed base and the worktable is detachable. This detachable connection includes, but is not limited to, snap-fit ​​connections, plug-in connections, and threaded connections. This detachable connection ensures ease of connection, facilitates the fixing of the fixed base to the worktable, and guarantees the stability of the fixed base.

[0007] Preferably, the fixing seat has a fitting block on the side away from the mounting head, and the worktable has a fitting groove, with the fitting block engaging with the fitting groove. The fixing seat includes a fitting block whose shape matches the shape of the fitting groove on the worktable. The engaging connection between the fitting block and the fitting groove facilitates the installation of the fixing seat on the worktable. Furthermore, during use, the fixing seat's stability is ensured by being mounted on the worktable. By pressing down the heat-shrink tool holder, the ejector pin is aligned with the tool mounting hole, allowing the broken tool inside the heat-shrink tool holder to be removed by moving the heat-shrink tool holder.

[0008] Preferably, the fitting block includes an inclined sidewall, and the fitting block gradually tapers away from the mounting head. The fitting block includes a sidewall, which, in this application, is inclined. Due to the inclined sidewall, the overall size of the fitting block exhibits a gradually decreasing frustum-shaped structure. The fitting block gradually tapers away from the mounting head, thereby making it easier for the fitting block to connect to the fitting groove and ensuring a smooth connection process.

[0009] Preferably, the fitting block has a hollowed-out slot. This hollowed-out slot on the fitting block reduces the overall weight of the fixing base, saves manufacturing materials, and reduces processing costs.

[0010] Preferably, the fixed base is provided with a middle plate, which abuts against the fixed base when the fixed base is connected to the worktable. The middle plate is a raised ring structure on the fixed base. When the fixed base is connected to the worktable, the middle plate abuts against the end face of the fitting groove, thereby preventing the fixed base from being completely inserted into the fitting groove, and facilitating the subsequent removal of the fixed base for convenient operation.

[0011] Preferably, the heat shrink tool holder includes a tail end, which abuts against the intermediate plate when the fixing seat is located inside the inner cavity. The tail end is the lowest part of the heat shrink tool holder. After the fixing seat is connected to the worktable, the intermediate plate on the fixing seat abuts against the end face of the fitting groove, while the tail end of the heat shrink tool holder abuts against the intermediate plate. Since the intermediate plate is supported and abutted by the worktable, when a broken tool is pushed out of the heat shrink tool holder, the tail end of the heat shrink tool holder will impact the intermediate plate. The impact force can be directly transmitted to the worktable by the intermediate plate, thereby avoiding damage to the fixing seat by the impact force and improving the service life.

[0012] Preferably, the mounting head is provided with a mounting groove, which engages with the ejector pin. The mounting groove is not a through hole and has a bottom, so the ejector pin can be partially installed within the groove during use, facilitating subsequent removal and replacement.

[0013] Preferably, the ejector pin is smaller than the tool mounting hole. This smaller size ensures smooth movement of the ejector pin within the tool mounting hole and prevents it from getting stuck.

[0014] Preferably, the fixing seat is provided with at least one stepped seat, and the mounting head is disposed on the stepped seat. Providing at least one stepped seat on the fixing seat allows it to better adapt to the structural shape of the heat shrink tool holder, while the progressively shrinking shape saves material and controls processing costs; it also facilitates the connection between the fixing seat and the inner cavity.

[0015] The beneficial effects of this utility model are as follows:

[0016] (1) It can quickly remove broken tools, improve work efficiency, and protect the heat shrink tool holder from damage during the process, ensuring the integrity of the workpiece.

[0017] (2) The fixed seat can directly transmit the impact force received during the cutting process to the worktable through the intermediate plate, thereby reducing the impact force on the fixed seat, protecting the structure of the fixed seat, and improving its service life. Attached Figure Description

[0018] Figure 1 This is an isometric view of the fixed base in this utility model.

[0019] Figure 2 This is an axonometric sectional view of the fixed base in this utility model.

[0020] Figure 3 This is an overall sectional view of the present invention.

[0021] In the picture:

[0022] 1. Heat shrink tool holder; 11. Inner cavity; 12. Tool mounting through hole; 13. Tail end;

[0023] 2. Fixed base, 21. Mounting head, 211. Mounting groove, 22. Ejector pin, 221. Fitting part, 222. Ejecting part, 23. Fitting block, 231. Side wall, 232. Hollowed-out slot, 24. Intermediate plate, 25. Stepped base;

[0024] 3 worktables, 31 fitting slots. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0026] Example 1:

[0027] like Figure 1 , 2 As shown, a device for removing broken heat-shrinkable knife handles includes a fixed base 2 connected to a heat-shrinkable knife handle 1. The fixed base 2 includes a mounting head 21, and a pin 22 is detachably connected to the mounting head 21. The pin 22 includes a fitting portion 221 connected inside the mounting head 21 and an ejector portion 222 exposed outside the mounting head 21.

[0028] In the prior art, when the tool on the heat shrink tool holder 1 breaks, the broken tool will remain inside the heat shrink tool holder 1. Workers often use tools such as universal pliers, glue, and knives to remove it, but this removal method will damage the heat shrink tool holder 1. Therefore, in this application, an mounting head 21 is provided on the fixing base 2, wherein the size of the mounting head 21 is smaller than the size of the fixing base 2. A pin 22 is provided on the mounting head 21, and the pin 22 is detachably connected to the mounting head 21. The detachable connection includes, but is not limited to, snap-fit ​​connection, threaded connection, plug-in connection, etc. After the pin 22 is installed on the mounting head 21, the broken tool in the heat shrink tool holder 1 can be ejected through the pin 22. The heat shrink tool holder 1 includes an inner cavity 11, which can accommodate part of the fixing base 2 and all of the mounting head 21. The fixing base 2 can pass through the inner cavity 11 into the interior of the heat shrink tool holder 1. The part of the heat shrink tool holder 1 used to fix the tool is the tool mounting through hole 12, wherein the tool mounting through hole 12 is a through hole structure. When a heat shrink tool breaks, the broken tool will be stuck in the heat shrink tool holder 1. Because of the breakage, it cannot be disassembled directly by conventional methods. Since the broken tool is stuck in the tool mounting hole 12, in this application, a fixing seat 2 with a ejector pin 22 is installed through the inner cavity 11. The ejector pin 22 on the fixing seat 2 is aligned with the tool mounting hole 12. The ejector pin 22 is inserted into the tool mounting hole 12, which can push the broken tool out of the tool mounting hole 12.

[0029] Example 2:

[0030] like Figure 1 , 2 As shown in Figure 3, a device for removing broken knives from a heat-shrinkable knife handle includes a fixed base 2 connected to a heat-shrinkable knife handle 1. The fixed base 2 includes a mounting head 21, and a pin 22 is detachably connected to the mounting head 21. The pin 22 includes a fitting portion 221 connected inside the mounting head 21 and an ejection portion 222 exposed outside the mounting head 21. The heat-shrinkable knife handle 1 includes an inner cavity 11. The fixed base 2, which communicates with the inner cavity 11, is disposed in a knife loading through hole 12 in the inner cavity 11. When the fixed base 2 is located in the inner cavity 11, the pin 22 passes through the inner cavity 11 into the knife loading through hole 12.

[0031] High-speed machining is one of the five major modern manufacturing technologies and an important component and development direction of modern manufacturing technology. High-speed tool systems are essential components of high-speed CNC machine tools, serving as the connection between the machine tool and the cutting tool, and acting as a bridge for the cutting tool to perform its cutting function. With the rapid development of science and technology, heat-shrinkable tool holder material manufacturing technology has been widely used as part of high-end CNC machine tools. Therefore, heat-shrinkable tool holders (1) often experience breakage. Currently, the common method for removing broken tools is to use universal pliers, glue, and cutting tools to cut open the heat-shrinkable tubing. However, these methods often result in damage to the heat-shrinkable tool holder (1) during the removal process.

[0032] In existing technologies, when a tool on a heat-shrink tool holder 1 breaks, the broken tool remains inside the holder. Workers often use tools such as universal pliers, glue, or knives to remove it. However, these methods can damage the heat-shrink tool holder 1. Specifically, using universal pliers to remove the broken tool carries the risk of uneven force application, causing the broken tool to be removed at an angle that could scratch the heat-shrink tool holder 1. This also requires a high level of experience from the user. Using a knife for further cutting also requires a high level of skill and carries the risk of scratching the heat-shrink tool holder 1. Using glue, after it seeps into the gap between the holder and the broken tool and hardens, may leave a difficult-to-remove adhesive film, affecting the contact surface for subsequent tool installation and potentially leading to situations where the tool cannot be properly installed or is difficult to install. The solvents or chemical components of some adhesives may also corrode the inner wall material of the heat shrink tool holder 1, especially when the heat shrink tool holder 1 is made of aluminum alloy or has a coating material inside. At the same time, since the heat shrink tool holder 1 is constantly cyclically heated and cooled during operation, the residual adhesive may soften during heating, affecting the normal clamping of the tool. If the adhesive needs to be cleaned, there is also a risk of scratching the inside of the heat shrink tool holder 1.

[0033] Therefore, in this application, a mounting head 21 is provided on the fixing base 2, wherein the size of the mounting head 21 is smaller than the size of the fixing base 2. A pin 22 is provided on the mounting head 21, and the pin 22 and the mounting head 21 are detachably connected. The detachable connection includes, but is not limited to, snap-fit ​​connection, threaded connection, plug-in connection, etc. After the pin 22 is installed on the mounting head 21, the broken knife in the heat shrink knife holder 1 can be ejected through the pin 22. The heat shrink knife holder 1 includes an inner cavity 11, which can accommodate part of the fixing base 2 and all of the mounting head 21. The fixing base 2 can pass through the inner cavity 11 into the interior of the heat shrink knife holder 1. The part of the heat shrink knife holder 1 used to fix the knife is the tool mounting through hole 12, wherein the tool mounting through hole 12 is a through hole structure. When a heat shrink tool breaks, the broken tool will be stuck in the heat shrink tool holder 1. Because of the breakage, it cannot be disassembled directly by conventional methods. Since the broken tool is stuck in the tool mounting hole 12, in this application, a fixing seat 2 with a ejector pin 22 is installed through the inner cavity 11. The ejector pin 22 on the fixing seat 2 is aligned with the tool mounting hole 12. The ejector pin 22 is inserted into the tool mounting hole 12, which can push the broken tool out of the tool mounting hole 12.

[0034] like Figure 3 As shown, the fixed base 2 is detachably connected to the worktable 3. Furthermore, in this application, the fixed base 2 is connected to the worktable 3, and the connection between the fixed base 2 and the worktable 3 is detachable. The detachable connection includes, but is not limited to, snap-fit ​​connection, plug-in connection, and threaded connection. The detachable connection ensures the convenience of connection, facilitates the fixing of the fixed base 2 on the worktable 3, and ensures the stability of the fixed base 2.

[0035] like Figure 1 , 3 As shown, a fitting block 23 is provided on the side of the fixed base 2 away from the mounting head 21, and a fitting groove 31 is provided on the worktable 3. The fitting block 23 engages with the fitting groove 31. The fixed base 2 includes the fitting block 23, the shape of which is adapted to the shape of the fitting groove 31 on the worktable 3. Through the engagement connection between the fitting block 23 and the fitting groove 31, the fixed base 2 can be easily installed on the worktable 3. At the same time, during use, since the fixed base 2 is installed on the worktable 3, the stability of the fixed base 2 can be guaranteed. By pressing down the heat shrink handle 1, the ejector pin 22 is aligned with the tool loading through hole 12, so that the broken tool inside the heat shrink handle 1 can be removed by moving the heat shrink handle 1.

[0036] like Figure 2 , 3 As shown, the fitting block 23 includes an inclined sidewall 231, and the fitting block 23 gradually shrinks on the side away from the mounting head 21. The fitting block 23 includes a sidewall 231, which is inclined in this application. Due to the inclined sidewall 231, the overall size of the fitting block 23 presents a gradually shrinking frustum structure. The fitting block 23 gradually shrinks on the side away from the mounting head 21, thereby making it easier for the fitting block 23 to connect to the fitting groove 31 and ensuring the smoothness of the connection process.

[0037] like Figure 2 , 3 As shown, the fitting block 23 has a hollowed-out slot 232. The hollowed-out slot 232 on the fitting block 23 reduces the overall weight of the fixing base 2, saves manufacturing materials, and reduces processing costs.

[0038] like Figure 1 , 3 As shown, a middle plate 24 is provided on the fixed base 2. When the fixed base 2 is connected to the worktable 3, the middle plate 24 abuts against the fixed base 2. The middle plate 24 is a raised ring structure on the fixed base 2. When the fixed base 2 is connected to the worktable 3, the middle plate 24 abuts against the end face of the fitting groove 31, thereby preventing the fixed base 2 from being completely inserted into the fitting groove 31. At the same time, it can be easily removed from the fixed base 2 later, which is convenient for operation.

[0039] like Figure 3As shown, the heat shrink tool holder 1 includes a tail end 13. When the fixing seat 2 is located inside the inner cavity 11, the tail end 13 abuts against the intermediate plate 24. The tail end 13 is the lowest part of the heat shrink tool holder 1. After the fixing seat 2 is connected to the worktable 3, the intermediate plate 24 on the fixing seat 2 abuts against the end face of the fitting groove 31, and the tail end 13 of the heat shrink tool holder 1 abuts against the intermediate plate 24. Since the intermediate plate 24 is supported and abutted by the worktable 3, when the broken tool in the heat shrink tool holder 1 is pushed out, the tail end 13 of the heat shrink tool holder 1 will impact the intermediate plate 24. The impact force can be directly transmitted to the worktable 3 by the intermediate plate 24, thereby avoiding damage to the fixing seat 2 by the impact force and improving the service life.

[0040] like Figure 2 As shown, the mounting head 21 is provided with a mounting groove 211, which engages with the ejector pin 22. The mounting groove 211 is not a through hole; it has a bottom. Therefore, during use, the ejector pin 22 can be partially installed within the mounting groove 211, facilitating subsequent removal and replacement of the ejector pin 22.

[0041] like Figure 3 As shown, the size of the ejector pin 22 is smaller than the size of the tool mounting through hole 12. This smaller size ensures that the ejector pin 22 can move smoothly within the tool mounting through hole 12, preventing it from getting stuck.

[0042] like Figure 1 , 2 As shown in Figure 3, the fixed base 2 is provided with at least one stepped seat 25, and the mounting head 21 is disposed on the stepped seat 25. The fixed base 2 is provided with at least one stepped seat 25. By providing the stepped seat 25, the fixed base 2 can be more adapted to the structural shape of the heat shrink tool holder 1. At the same time, the progressively shrinking shape can save materials and control processing costs; and facilitate the connection between the fixed base 2 and the inner cavity 11.

[0043] The specific structure and operation method of the heat-shrinkable knife handle broken knife removal device in this embodiment are as follows: In this embodiment, the entire device consists of a worktable 3, a fixed base 2, and a heat-shrinkable knife handle 1 from bottom to top. The worktable 3 is a fixed structure, and a fitting groove 31 is provided on the worktable 3. The fitting groove 31 is a cylindrical structure, which is a rectangular structure in cross-sectional view. A fitting block 23 is connected in the fitting groove 31. The fitting block 23 is a part of the fixed base 2. The fitting block 23 is a frustum-shaped structure. The height of the interlocking block 23 is less than the depth of the interlocking groove 31. The side of the interlocking block 23 near the bottom of the interlocking groove 31 is a small-sized frustum, which improves the smoothness of the connection between the interlocking block 23 and the interlocking groove 31. The interior of the interlocking block 23 is a hollow structure, which is also a cylindrical structure. A middle disk 24 is set above the interlocking block 23. The middle disk 24 is a circular disk structure and abuts against the upper surface of the worktable 3. A platform is set on the middle disk 24. The structure has a stepped form, with a mounting head 21 above it. The mounting head 21 contains a mounting groove 211, which is a groove-shaped structure with a bottom. A ejector pin 22 is connected inside the mounting groove 211, with one part of the ejector pin 22 connected to the inside of the groove and the other part located outside. A heat-shrinkable tool holder 1 is positioned above the fixing base 2. The heat-shrinkable tool holder 1 includes a tail end 13 that abuts against the intermediate disc 24, and an inner cavity 1 is provided inside the heat-shrinkable tool holder 1. 1. The inner cavity 11 can accommodate the mounting head 21 of the stepped structure of the fixed seat 2. The uppermost end of the heat shrink tool holder 1 is provided with a tool mounting through hole 12 for mounting the tool. When the fixed seat 2 is connected to the heat shrink tool holder 1, the ejector pin 22 is located in the tool mounting through hole 12. The ejector pin 22 can push out the broken tool in the tool mounting through hole 12 in the heat shrink tool holder 1. During use, the fixed seat 2 is placed on the worktable 3, and then the heat shrink tool holder 1 is pressed down, so that the ejector pin 22 pushes the broken tool out of the tool mounting through hole 12.

Claims

1. A device for removing broken knives from heat-shrink knife handles, characterized in that, The device includes a mounting base connected to a heat-shrink knife holder. The mounting base includes a mounting head with a pin detachably connected to it. The pin includes a fitting portion connected within the mounting head and an ejector portion protruding outside the mounting head. The heat-shrink knife holder includes an inner cavity, and the mounting base is disposed in a tool mounting through hole within the inner cavity, communicating with the inner cavity. When the mounting base is located in the inner cavity, the pin passes through the tool mounting through hole from the inner cavity.

2. The heat-shrinkable knife holder broken knife removal device according to claim 1, characterized in that, The fixed base is detachably connected to a workbench.

3. The heat-shrinkable knife holder broken knife removal device according to claim 2, characterized in that, The mounting base has a fitting block on the side away from the mounting head, and the worktable has a fitting groove, with the fitting block engaging with the fitting groove.

4. The heat-shrinkable knife holder broken knife removal device according to claim 3, characterized in that, The fitting block includes inclined sidewalls, and the fitting block gradually decreases in size on the side away from the mounting head.

5. The heat-shrinkable knife holder broken knife removal device according to claim 3, characterized in that, The interlocking block has a hollowed-out slot.

6. The heat-shrinkable knife holder broken knife removal device according to claim 2, characterized in that, The fixed base is provided with an intermediate plate, and when the fixed base is connected to the worktable, the intermediate plate abuts against the fixed base.

7. The heat-shrinkable knife holder broken knife removal device according to claim 6, characterized in that, The heat shrink handle includes a tail end, which abuts against the intermediate disc when the fixing seat is located inside the inner cavity.

8. A device for removing broken blades from a heat-shrinkable knife holder according to any one of claims 1-7, characterized in that, The mounting head is provided with a mounting groove, which engages with the ejector pin.

9. A heat-shrinkable knife holder broken knife removal device according to any one of claims 1-7, characterized in that, The size of the ejector pin is smaller than the size of the tool mounting hole.

10. A device for removing broken blades from a heat-shrinkable knife holder according to any one of claims 1-7, characterized in that, The fixed base is provided with at least one stepped seat, and the mounting head is disposed on the stepped seat.

Images