A knife handle heat shrink machine

Abstract

This utility model discloses a tool holder heat shrink machine, including a housing, a tool holder base, a heating component, a cooling component, a controller, and a barcode scanner. The tool holder is fixed on the tool holder base and has a QR code label. The heating component includes a heating coil for heating the tool holder. The cooling component includes a housing and an air blowing component. A ventilation groove is formed inside the housing, and the air blowing component is connected to the air inlet of the ventilation groove. The controller is electrically connected to both the heating coil and the air blowing component. The barcode scanner is electrically connected to the controller and is used to scan and identify the QR code label on the tool holder. The controller controls the heating time of the heating coil and the air supply time of the air blowing component based on the scanning information obtained by the barcode scanner. This utility model solves the technical problems in existing heat shrink tool holder assembly, where the heating and cooling times of the heat shrink machine rely on manual experience for control, resulting in insufficient accuracy of heat shrink parameters, low tool assembly success rate, easy damage to the tool holder, poor tool clamping stability, and low production efficiency.

Description

Technical Field

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

[0002] The core working principle of heat-shrink tool holders is based on the effect of thermal expansion and contraction. The tool mounting hole and tool shank are designed with an interference fit. In its natural state, the diameter of the mounting hole is slightly smaller than the diameter of the tool shank to ensure sufficient clamping force generated by the shrinkage of the hole wall after cooling, preventing the tool from loosening or shifting during high-speed cutting. However, this interference fit also presents significant challenges to tool assembly: at room temperature, the tool cannot be directly inserted into the mounting hole. Specialized equipment must be used to locally heat the mounting hole area, causing the hole diameter to expand to a size larger than the tool diameter before the tool can be inserted. Only after the tool holder cools naturally or under forced cooling, and the mounting hole shrinks and returns to its original position, can the tool be securely locked in place.

[0003] Currently, most mainstream heat shrink tool holder machines rely heavily on operator experience to control heating and cooling times. Different specifications and materials of heat shrink tool holders require different heating and cooling times, but in practice, there are no standardized parameters; the timing of starting and stopping depends entirely on experience. This easily leads to problems: insufficient heating results in inadequate expansion of the tool holder's bore, preventing the tool from being inserted; excessive heating causes overheating, deteriorating material properties and deforming the mounting hole. Similarly, insufficient cooling time results in incomplete shrinkage of the tool holder, insufficient clamping force, and tool slippage during machining; excessive cooling time prolongs assembly time and reduces efficiency. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a tool holder heat shrink machine, which solves the technical problems in the assembly of existing heat shrink tool holders, such as insufficient accuracy of heat shrink parameters, low success rate of tool assembly, easy damage to tool holders, poor tool clamping stability, and low production efficiency, caused by the reliance on manual experience to control the heating and cooling time of the heat shrink machine.

[0005] This utility model is achieved through the following technical solution:

[0006] A knife handle heat shrink machine, comprising:

[0007] chassis;

[0008] A tool holder base is provided on the machine housing, the tool holder is fixed on the tool holder base, and a QR code label is provided on the tool holder;

[0009] A heating assembly, comprising a heating coil for heating the tool holder, thereby expanding the diameter of the mounting hole on the tool holder to facilitate the fitting of the tool into the mounting hole;

[0010] A cooling assembly includes a housing and an air blowing assembly. A ventilation groove is formed inside the housing. The air blowing assembly is connected to the air inlet of the ventilation groove. The air outlet of the ventilation groove is used to spray out the gas provided by the air blowing assembly to cool the tool holder, so that the heating orifice that has expanded returns to its initial state to lock the inserted tool.

[0011] The controller is electrically connected to both the heating coil and the air blowing assembly.

[0012] A barcode scanner, electrically connected to the controller, is used to scan and identify the QR code label on the handle. The controller controls the heating time of the heating coil and the air supply time of the air blowing assembly based on the scanning information obtained by the barcode scanner.

[0013] Furthermore, the air blowing assembly includes an air source and a solenoid valve. The air source is connected to the air inlet of the air passage through a pipe. The solenoid valve is installed on the pipe to control the opening and closing of the pipe, and the solenoid valve is electrically connected to the controller.

[0014] Furthermore, a through hole is formed on the housing, and multiple air outlets are provided, with the multiple air outlets circumferentially distributed on the inner peripheral wall of the through hole.

[0015] Furthermore, the heating coil is annular and is disposed within the through hole, and the heating coil and the air outlet are offset in the vertical direction.

[0016] Furthermore, it also includes a lifting assembly, which includes a column, a guide rod, a locking device, and a bracket. The guide rod is fixed to the column, the locking device is slidably connected to the guide rod, and the bracket is fixedly connected to the locking device and the housing respectively.

[0017] The housing is provided with a handle, and the handle is provided with a button. The locking device and the button are electrically connected to the controller.

[0018] Furthermore, a first slide rail and a second slide rail are fixed to opposite sides of the column, a first slider is slidably connected to the first slide rail, a second slider is slidably connected to the second slide rail, the bracket is fixedly connected to the first slider, a counterweight is fixed to the second slider, at least one roller is fixed to the top of the column, the counterweight is connected to the bracket by a traction rope, and the traction rope is mounted on the roller.

[0019] Furthermore, a cover is fixed on the housing, the cover is placed on the outside of the lifting assembly, and the cover has an opening on the side corresponding to the housing, and a gusset cover is provided at the opening to cover the opening.

[0020] Furthermore, a pair of locking keys are fixed on the tool holder, the locking keys are provided with a first inclined surface, and a second inclined surface is formed on the tool holder, the first inclined surface and the second inclined surface are engaged.

[0021] Furthermore, it also includes a support ring, which is fixed to the housing. The support ring has an annular hole, and a plurality of elastic locking elements are arranged circumferentially on the inner peripheral wall of the annular hole. The elastic locking elements include screws, steel balls, and springs that abut against the screws and steel balls, all fixed to the support ring.

[0022] The outer circumferential surface of the tool holder is provided with a groove for engaging with the steel ball.

[0023] Furthermore, it also includes:

[0024] A temperature sensor, electrically connected to the controller, is used to detect the current temperature of the tool holder;

[0025] The touch screen is electrically connected to the controller and can control the activation of the heating coil and the air blowing assembly, as well as display the current temperature of the knife handle.

[0026] Compared with existing technologies, the advantages of this utility model are:

[0027] By setting up a barcode scanner electrically connected to the controller, the QR code label on the tool holder can be scanned and identified. The controller automatically obtains the tool holder information and calls up the appropriate heating and cooling times, eliminating the need for manual parameter setting. This improves operational accuracy and efficiency and avoids subsequent tool assembly problems caused by parameter mismatch. It can also connect to the processing equipment to import tool holder and tool information into the production management system. Attached Figure Description

[0028] Figure 1 Schematic diagram of the overall structure of the tool holder heat shrink machine Figure 1 ;

[0029] Figure 2 This is a schematic diagram of the knife handle.

[0030] Figure 3 This is a sectional view of the shell;

[0031] Figure 4 Schematic diagram of a partial structure of a tool holder heat shrink machine Figure 1 ;

[0032] Figure 5 Schematic diagram of part of the structure of the tool holder heat shrink machine Figure 1 ;

[0033] Figure 6 Schematic diagram of part of the structure of the tool holder heat shrink machine Figure 2 ;

[0034] Figure 7 Schematic diagram of the overall structure of the tool holder heat shrink machine Figure 2 ;

[0035] Figure 8 Schematic diagram of a partial structure of a tool holder heat shrink machine Figure 2 ;

[0036] Figure 9 This is a partial structural cross-sectional view of a tool holder heat shrink machine.

[0037] 1. Tool holder; 10. QR code label; 11. Assembly hole; 12. Second bevel; 13. Clearance groove; 2. Tool; 100. Housing; 200. Tool holder seat; 201. Groove; 210. Locking key; 211. First bevel; 310. Heating coil; 410. Housing; 411. Vent groove; 412. Air inlet; 413. Air outlet; 414. Through hole; 415. Handle; 416. Button; 500. Controller; 510. Touch screen; 600. Barcode scanner; 700. Lifting assembly Components; 710, Column; 711, First slide rail; 712, Second slide rail; 713, First slider; 714, Second slider; 715, Counterweight; 716, Roller; 717, Traction rope; 720, Guide rod; 730, Locking device; 740, Bracket; 800, Cover; 810, Opening; 820, Bellows cover; 830, Hook; 840, Tool holder; 841, Placement slot; 900, Support ring; 910, Annular hole; 920, Screw; 930, Steel ball; 940, Spring. Detailed Implementation

[0038] The following detailed, non-limiting description of the utility model's technical solution, in conjunction with preferred embodiments and accompanying drawings, is provided. In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified. 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.

[0039] like Figures 1-5 As shown, an embodiment of the present invention provides a heat shrink machine for a tool holder, comprising a housing 100, a tool holder seat 200, a heating component, a cooling component, a controller 500, and a barcode scanner 600. The tool holder seat 200 is mounted on the housing 100, and the tool holder 1 is fixed to the tool holder seat 200, with a QR code label 10 on the tool holder 1. The heating component includes a heating coil 310, which heats the tool holder 1, causing the diameter of the mounting hole 11 on the tool holder 1 to expand so that the tool 2 can be mounted into the mounting hole 11. The cooling component includes a housing 410 and an air blowing component, with a ventilation groove formed inside the housing 410. 411, the air blowing assembly is connected to the air inlet 412 of the air vent 411, and the air outlet 413 of the air vent 411 is used to spray out the gas provided by the air blowing assembly to cool the tool holder 1, so that the heating orifice 11, which has expanded due to heat, returns to its initial state to lock the inserted tool 2. The controller 500 is electrically connected to the heating coil 310 and the air blowing assembly respectively. The barcode scanner 600 is electrically connected to the controller 500 and is used to scan and identify the QR code label 10 on the tool holder 1. The controller 500 controls the heating time of the heating coil 310 and the air supply time of the air blowing assembly according to the scanning information obtained by the barcode scanner 600.

[0040] The air blowing assembly includes an air source and a solenoid valve. The air source is connected to the air inlet 412 of the air passage 411 through a pipe. The solenoid valve is installed on the pipe to control the opening and closing of the pipe, and the solenoid valve is electrically connected to the controller 500.

[0041] like Figure 3 and Figure 4As shown, a through hole 414 is formed on the housing 410, and multiple air outlets 413 are provided, which are circumferentially distributed on the inner peripheral wall of the through hole 414. Furthermore, the multiple air outlets 413 are evenly distributed along the inner peripheral wall of the through hole 414 to ensure that the cooling gas can be evenly sprayed around the outer periphery of the tool holder 1, thereby improving the uniformity and efficiency of cooling.

[0042] like Figure 4 As shown, the heating coil 310 is annular and is disposed within the through hole 414, with the heating coil 310 and the air outlet 413 vertically offset. During heating, the center hole of the heating coil 310 is aligned with the tool holder to be heated, ensuring uniform expansion of the tool holder's mounting hole and facilitating smooth tool insertion. Specifically, the tool holder to be heated refers to the axial section of the mounting hole 11, while the heating coil 310 is located on the outer periphery of the axial section of the mounting hole 11 during heating, ensuring concentrated heat on the target area. Furthermore, the offset arrangement of the heating coil 310 and the air outlet 413 prevents damage to the component caused by direct impact of cooling gas on the heating coil 310, while also ensuring that individual heating or cooling does not interfere with each other.

[0043] like Figure 5 As shown, the heat shrink machine for knife handles also includes a lifting assembly 700, which includes a column 710, a guide rod 720, a locking device 730, and a bracket 740. The guide rod 720 is fixed to the column 710, and the locking device 730 is slidably connected to the guide rod 720. The bracket 740 is fixedly connected to both the locking device 730 and the housing 410. A handle 415 is provided on the housing 410, and a button 416 is provided on the handle 415. The locking device 730 and the button 416 are electrically connected to the controller 500. After receiving the trigger signal from the button 416, the controller 500 controls the locking device 730 to release or lock the guide rod 720, thereby realizing the lifting and lowering adjustment of the housing 410, i.e., the heating coil 310 and the air outlet 413, along the guide rod 720. When button 416 is pressed, controller 500 controls locking device 730 to release the lock on guide rod 720. The operator can then manually push handle 415 to adjust the height of heating coil 310 and air outlet 413. After releasing button 416, locking device 730 relocks guide rod 720, fixing the position of housing 410, that is, the position of heating coil 310 and air outlet 413. In this embodiment, locking device 730 uses a conventional pneumatic shaft locking device.

[0044] like Figure 6As shown, a first slide rail 711 and a second slide rail 712 are fixed to opposite sides of the column 710, respectively. A first slider 713 is slidably connected to the first slide rail 711, and a second slider 714 is slidably connected to the second slide rail 712. The bracket 740 is fixedly connected to the first slider 713, and a counterweight 715 is fixed to the second slider 714. At least one roller 716 is fixed to the top of the column 710. The counterweight 715 is connected to the bracket 740 by a traction rope 717, which is mounted on the roller 716. By setting the counterweight 715 and the bracket 740 to form a counterweight balance structure, it is easier to move the housing 410 to the position of the heating coil 310 and the air outlet 413, thus reducing the workload of the operator.

[0045] like Figure 7 As shown, a cover 800 is fixed on the housing 100, covering the outside of the lifting assembly 700. The cover 800 has an opening 810 on the side of the housing 410 corresponding to the housing 410. A bellows cover 820 is provided at the opening 810 to cover the opening 810. The bellows cover 820 extends and retracts synchronously with the lifting of the housing 410, effectively preventing dust and debris from entering the interior of the lifting assembly 700.

[0046] like Figure 8 As shown, a pair of retaining keys 210 are fixed on the tool holder 200. The retaining keys 210 are provided with a first inclined surface 211, and the tool holder 1 is formed with a second inclined surface 12. The first inclined surface 211 and the second inclined surface 12 are engaged. Furthermore, the tool holder 1 is also formed with a relief groove 13. When installing the tool holder 1, the relief groove 13 is first aligned with the retaining keys 210 so that the tool holder 1 can be placed in place. Then, the tool holder 1 is rotated so that the second inclined surface 12 of the tool holder 1 gradually contacts the first inclined surface 211 of the retaining keys 210, and the retaining keys 210 are used to press the tool holder 1 downward to complete the fixation of the tool holder 1.

[0047] like Figure 9 As shown, the tool holder heat shrink machine also includes a support ring 900, which is fixed to the housing 100. An annular hole 910 is formed on the support ring 900. A plurality of elastic locking elements are arranged circumferentially on the inner peripheral wall of the annular hole 910. The elastic locking elements include a screw 920, a steel ball 930, and a spring 940 that abuts between the screw 920 and the steel ball 930, which are fixed to the support ring 900. A groove 201 that mates with the steel ball 930 is provided on the outer peripheral surface of the tool holder 200.

[0048] like Figure 1As shown, the tool holder heat shrink machine also includes a temperature sensor and a touch screen 510. The temperature sensor is electrically connected to the controller 500 and is used to detect the current temperature of the tool holder 1. The touch screen 510 is also electrically connected to the controller 500 and can control the activation of the heating coil 310 and the air blowing assembly, as well as display the current temperature of the tool holder 1. In this embodiment, the touch screen 510 has a heating button to control the operation of the heating coil 310 and a cooling button to control the operation of the air blowing assembly. The cooling button specifically controls the on / off state of the solenoid valve. The operation is intuitive and easy to understand, reducing the operational threshold. Furthermore, by detecting the temperature of the tool holder 1 in real time through the temperature sensor, it further ensures that the current heating or cooling temperature of the tool holder 1 meets the installation requirements of the tool holder 1 and the cutting tool 2.

[0049] like Figure 7 As shown, the outer side of the cover 800 is provided with multiple hooks 830, which are used to hang different specifications of tool holders 200, making it convenient to store and retrieve the tool holders 200. The outer side of the cover 800 is provided with a tool holder 840, on which placement grooves 841 of different inner diameters are formed to store corresponding specifications of tools 2, so as to avoid the tools 2 being lost or confused, and improve the convenience of accessory management.

[0050] During operation, first determine the taper shank model of the tool holder 1, select the corresponding tool holder seat 200, and place the tool holder seat 200 into the support ring 900. Then, rotate the tool holder seat 200 until the steel ball 930 of the elastic locking member engages with the groove 201 of the tool holder seat 200 to achieve relative fixation. Next, scan the QR code label 10 on the tool holder 1 using the barcode scanner 600. The controller 500 automatically identifies the information of the tool holder 1 and retrieves the heating and cooling time suitable for the tool holder 1. Align the clearance groove 13 on the tool holder 1 with the locking key 210, insert the tool holder 1, and then rotate it at a certain angle so that the second inclined surface 12 of the tool holder 1 engages with the first inclined surface 211 of the locking key 210, pressing the tool holder 1 in place. Then, grasp the handle 415 and press the button 416 on the handle 415. The locking device 730 releases the guide rod 720, and the handle 415 is moved downwards to move the heating coil 310 until its center hole is aligned with the tool holder to be heated. Then, release the button 416. At this time, the locking device 730 locks the guide rod 720 again, fixing the position of the heating coil 310. Then, start the heating button, and the heating coil 310 begins to heat the tool holder 1. After heating for the predetermined time, place the tool 2 into the heated and expanded mounting hole 11 of the tool holder 1. Then, start the cooling button. The controller 500 controls the solenoid valve to introduce compressed air through the vent groove 411 of the housing 410, blowing it onto the tool holder 1 to cool it. After cooling, grasp the handle 415 again, press the button 416, move the heating coil 310 to the starting position, and remove the tool holder 1 with the tool 2 installed.

[0051] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A heat shrink machine for knife handles, characterized in that, include: Casing (100); A tool holder (200) is provided on the housing (100), and a tool handle (1) is fixed on the tool holder (200), and a QR code label (10) is provided on the tool handle (1). A heating assembly, the heating assembly including a heating coil (310) for heating the tool holder (1) so that the diameter of the mounting hole (11) on the tool holder (1) expands so that the tool (2) can be mounted into the mounting hole (11); The cooling assembly includes a housing (410) and an air blowing assembly. A ventilation groove (411) is formed inside the housing (410). The air blowing assembly is connected to the air inlet (412) of the ventilation groove (411). The air outlet (413) of the ventilation groove (411) is used to spray out the gas provided by the air blowing assembly to cool the tool holder (1), so that the heating aperture expansion of the mounting hole (11) returns to its initial state to lock the inserted tool (2). A controller (500) is electrically connected to the heating coil (310) and the air blowing assembly, respectively; A barcode scanner (600) is electrically connected to the controller (500) and is used to scan and identify the QR code label (10) on the handle (1). The controller (500) controls the heating time of the heating coil (310) and the air supply time of the air blowing assembly according to the scanning information obtained by the barcode scanner (600).

2. The knife handle heat shrink machine according to claim 1, characterized in that, The air blowing assembly includes an air source and a solenoid valve. The air source is connected to the air inlet (412) of the air passage (411) through a pipe. The solenoid valve is installed on the pipe to control the opening and closing of the pipe, and the solenoid valve is electrically connected to the controller (500).

3. The knife handle heat shrink machine according to claim 1, characterized in that, The housing (410) has a through hole (414) that penetrates the housing (410), and there are multiple air outlets (413), which are circumferentially distributed on the inner peripheral wall of the through hole (414).

4. The knife handle heat shrink machine according to claim 3, characterized in that, The heating coil (310) is in the shape of a ring and is disposed in the through hole (414). The heating coil (310) and the air outlet (413) are staggered in the vertical direction.

5. The knife handle heat shrink machine according to claim 4, characterized in that, It also includes a lifting assembly (700), which includes a column (710), a guide rod (720), a locking device (730), and a bracket (740). The guide rod (720) is fixed on the column (710), the locking device (730) is slidably connected to the guide rod (720), and the bracket (740) is fixedly connected to the locking device (730) and the housing (410) respectively. A handle (415) is provided on the housing (410), and a button (416) is provided on the handle (415). The locking device (730) and the button (416) are electrically connected to the controller (500) respectively.

6. The knife handle heat shrink machine according to claim 5, characterized in that, The column (710) has a first slide rail (711) and a second slide rail (712) fixed on opposite sides respectively. A first slider (713) is slidably connected to the first slide rail (711), and a second slider (714) is slidably connected to the second slide rail (712). The bracket (740) is fixedly connected to the first slider (713), and a counterweight (715) is fixed to the second slider (714). At least one roller (716) is fixed to the top of the column (710). The counterweight (715) is connected to the bracket (740) by a traction rope (717), and the traction rope (717) is mounted on the roller (716).

7. The knife handle heat shrink machine according to claim 6, characterized in that, A cover (800) is fixed on the housing (100). The cover (800) covers the outside of the lifting assembly (700), and the cover (800) has an opening (810) on one side corresponding to the housing (410). A accordion cover (820) is provided at the opening (810) to cover the opening (810).

8. The knife handle heat shrink machine according to claim 1, characterized in that, A pair of locking keys (210) are fixed on the tool holder (200). The locking keys (210) are provided with a first inclined surface (211), and a second inclined surface (12) is formed on the tool holder (1). The first inclined surface (211) and the second inclined surface (12) are engaged.

9. The knife handle heat shrink machine according to claim 1, characterized in that, It also includes a support ring (900) fixed on the housing (100). The support ring (900) has an annular hole (910) formed on it. A plurality of elastic locking elements are arranged circumferentially on the inner peripheral wall of the annular hole (910). The elastic locking elements include a screw (920) fixed on the support ring (900), a steel ball (930), and a spring (940) abutting between the screw (920) and the steel ball (930). The outer peripheral surface of the tool holder (200) is provided with a groove (201) that mates with the steel ball (930).

10. The knife handle heat shrink machine according to claim 1, characterized in that, Also includes: A temperature sensor, electrically connected to the controller (500), is used to detect the current temperature of the tool holder (1); The touch screen (510) is electrically connected to the controller (500). The touch screen (510) can control the activation of the heating coil (310) and the air blowing assembly, and display the current temperature of the knife handle (1).

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