Crimping device free of die replacement

Abstract

A crimping device free of die replacement comprises a die and a body which are connected with each other. A fixed part of the mold is provided with a distance sensing unit; the distance sensing unit is used for sensing a relative distance of a movable part of the mold relative to the fixed part to generate a sensing distance signal; the moving part is used for crimping a terminal; a control unit of the body judges whether the stress of a hydraulic circuit of a hydraulic jack in the body is larger than or equal to a pressure threshold value according to a received pressure signal, and if yes, the outer diameter length of the terminal is calculated according to the distance sensing signal; the control unit controls the hydraulic jack to crimp a proper crimping distance according to a stroke corresponding to the outer diameter length so as to crimp the terminal properly, and the requirements for measuring the outer diameter length and replacing the die manually are avoided.

Description

Technical Field

[0001] A crimper, especially a crimper that does not require die replacement. Background Art

[0002] In the technical field of electric hand tools, a crimper is a tool that compresses an axis inward. In industrial applications, a crimper is mainly used to crimp a cable inserted into a terminal, so that the cable and the terminal compressed inward by appropriate pressure are tightly combined, thereby making various cable wiring applications. In order to increase the force of a crimper to output an inward pressure, most of the existing crimpers have developed into hydraulic crimpers, and the hydraulic crimpers that can be electrically controlled are electric hydraulic crimpers. At present, in society, an electric hydraulic crimper is usually simply called a crimper, so the crimper referred to is an electric hydraulic crimper.

[0003] In current industrial applications, the terminal to be crimped and deformed may have different outer diameters, and the distance that the crimper should move inwards will be different according to the different outer diameters. Therefore, the distance that a conventional crimper should move inwards after touching the terminal should be a distance that allows the terminal to be properly deformed and press the cable inserted in the terminal.

[0004] When the force of the crimper to apply internal pressure is too large, the terminal may be damaged and cracked. When the force of the crimper to apply internal pressure is too small, the terminal may not be able to press the cable tightly, causing the cable to fall out of the terminal. Therefore, generally speaking, for the terminal with a larger outer diameter, the distance that the crimper should move inward should theoretically be shorter, because it will start to contact the terminal after moving inward a short distance. Conversely, for the terminal with a smaller outer diameter, the distance that the crimper should move inward should theoretically be longer, because it will start to contact the terminal after moving inward a long distance.

[0005] However, currently, for a user operating the crimper, the user needs to first visually inspect the model of the terminal to know the outer diameter of the terminal, and then manually adjust the upper limit of the diameter of the crimper and replace the mold corresponding to the outer diameter. When the model printed on the terminal is unclear, the user needs to manually measure the outer diameter of the terminal before adjusting the upper limit of the diameter of the crimper and replacing the mold corresponding to the outer diameter. This method of operating the crimper is too labor-intensive and needs to be improved. Utility Model Content

[0006] The utility model provides a crimping device without changing the mold. The crimping device without changing the mold can ensure that the user can automatically measure an outer diameter of a terminal to be crimped without manually changing the mold, so as to determine a crimping distance for crimping the terminal appropriately.

[0007] The crimping device of the utility model without changing the mold comprises:

[0008] A mold has a fixed component and a movable component; wherein the fixed component is provided with a distance sensing unit, the distance sensing unit is used to sense a relative distance between the movable component and the fixed component to generate a sensing distance signal;

[0009] A body connected to the mold and having:

[0010] A hydraulic jack is provided with a thrust rod, a hydraulic circuit, a hydraulic pump and a hydraulic sensor; wherein the hydraulic circuit connects the hydraulic pump and the thrust rod, and the hydraulic sensor senses a force applied to the hydraulic circuit to generate a pressure signal;

[0011] a control unit electrically connected to the distance sensing unit of the mold, the hydraulic pump and the hydraulic sensor to receive the sensing distance signal and the pressure signal; wherein the control unit controls the hydraulic pump to pressurize the hydraulic circuit according to a start signal to push the thrust rod toward the moving component so that the moving component can be crimped with a terminal;

[0012] When the control unit determines that the force of the hydraulic circuit is greater than or equal to a pressure threshold according to the pressure signal, the control unit calculates an outer diameter length of the terminal according to the received distance sensing signal;

[0013] When the control unit calculates the outer diameter length of the terminal, the control unit controls the hydraulic jack to push the thrust rod toward the moving component by an appropriate crimping distance according to a stroke corresponding to the outer diameter length, and further controls the hydraulic jack to retract the thrust rod.

[0014] The movable part of the mold can be applied to a variety of terminals with different outer diameters on the market, so a user of the mold-free crimping device does not need to replace the mold to correspond to a variety of terminals with different outer diameters. In this way, the utility model can help the user save effort in replacing the mold.

[0015] Furthermore, when the control unit determines that the force on the hydraulic circuit is greater than or equal to the pressure threshold and determines that the moving part begins to lightly touch the terminal, the control unit can accurately measure the relative distance of the moving part relative to the fixed part according to the sensing distance signal generated by the distance sensing unit, and then calculate the outer diameter length of the terminal, so as to automatically formulate the corresponding stroke later, so that the thrust rod only pushes the appropriate crimping distance, so as to properly crimp the terminal. The terminal that is properly crimped, as described in the previous technical paragraph, can avoid the terminal from being excessively stressed and broken, or avoid the terminal from being insufficiently stressed to actually combine with a cable inserted in the terminal. In this way, the utility model can automatically and accurately calculate the outer diameter length of the terminal, thereby helping the user save manpower to confirm the outer diameter length of the terminal, making the overall crimping operation of the terminal smoother and more efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is an appearance diagram of the crimper of the utility model that does not require mold replacement.

[0017] Figure 2 The utility model is a block diagram of a crimper without the need to change molds.

[0018] Figure 3 This is a cross-sectional view of the mold of the crimping device of the utility model without mold replacement before being crimped under force.

[0019] Figure 4 The utility model is a cross-sectional view of the mold of the mold-changing-free crimping device when the mold is subjected to force crimping.

[0020] Figure 5 The present invention is a flow chart of the steps executed by the control unit of the crimping device without mold replacement.

[0021] Figure 6 Another flow chart of the steps executed by the control unit of the mold-changing-free crimping device of the present invention. DETAILED DESCRIPTION

[0022] See also Figure 1 and Figure 2 As shown, the utility model provides a crimper without mold replacement. The crimper without mold replacement has a body 1 and a mold 2 connected to the body 1.

[0023] The main body 1 includes a housing 100 . A control unit 10 , a storage unit 20 and a hydraulic jack 30 are disposed in the housing 100 . The control unit 10 is electrically connected to the storage unit 20 and the hydraulic jack 30 .

[0024] In detail, the hydraulic jack 30 includes a thrust rod 31, a hydraulic sensor 32, a hydraulic circuit 33 and a hydraulic pump 34. The hydraulic sensor 32 and the hydraulic pump 34 are electrically connected to the control unit 10, respectively, and the hydraulic circuit 33 is connected between the thrust rod 31 and the hydraulic pump 34. Preferably, the hydraulic jack 30 is an oil pressure jack.

[0025] The control unit 10 controls the operation of the hydraulic pump 34, and the hydraulic pump 34 controls the hydraulic lifting of the hydraulic circuit 33 to drive the thrust rod 31 to move. In other words, the control unit 10 indirectly controls the forward and backward movement of the thrust rod 31 along an axial direction by controlling the hydraulic pump 34. In addition, the hydraulic sensor 32 is also connected to the hydraulic circuit 33, so that the hydraulic sensor 32 senses the hydraulic pressure of the hydraulic circuit 33 and indirectly senses the force of the thrust rod 31. In this way, the hydraulic sensor 32 indirectly senses the force of the thrust rod 31 and generates a pressure signal corresponding to the hydraulic pressure, and transmits the pressure signal to the control unit 10.

[0026] Please also read Figure 3 As shown, the mold 2 has a fixed component 2001 and a movable component 2002. In one embodiment of the present invention, the fixed component 2001 includes: Figure 3 The plurality of fixed parts 201 shown in FIG. 1 and the moving part 2002 include the following Figure 3 The plurality of moving parts 202, a connecting part 203 and an adjusting ring 206 are shown. The connecting part 203 is cylindrical and extends toward the axial direction, and the connecting part 203 is fixedly connected to one of the moving parts 202. The cylindrical connecting part 203 is engraved with a first scale 204 on one side. Correspondingly, one of the fixed parts 201 is engraved with a second scale 205. The adjusting ring 206 is adjustable and fixed around the cylindrical connecting part 203. A user of the utility model can refer to the position information presented by the first scale 204 and the second scale 205 when the utility model is not in use of power control, and manually adjust the position of the adjusting ring 206 fixed around the connecting part 203. A distance sensing unit 40 is provided in the fixing component 2001, and the distance sensing unit 40 is electrically connected to the control unit 10. The distance sensing unit 40 is used to sense a relative distance between the moving component 2002 and the fixed component 2001 to generate a sensing distance signal, and the distance sensing unit 40 transmits the sensing distance signal to the control unit 10 .

[0027] The control unit 10 receives the sensing distance signal and the pressure signal. When the control unit 10 controls the thrust rod 31 of the hydraulic jack 30 to move forward, the control unit 10 controls the hydraulic jack 30 to push the thrust rod 31 in a first direction Dir1. The thrust rod 31 pushed forward in the first direction Dir1 will touch the connection part 203 of the moving part 2002 after moving a certain distance. When the thrust rod 31 pushes the connection part 203 to move in the first direction Dir1, the force of one of the connected moving parts 202 is used to move the remaining moving parts 202. When the connection part 203 moving in the first direction Dir1 touches one of the fixed parts 2001, the connection part 203 is blocked and stops moving in the first direction Dir1. In this way, even if the utility model does not use power control, the user can ensure that the connection part 203 will not excessively move toward the axis and excessively crimp the object. When the connection part 203 moving toward the first direction Dir1 does not touch one of the fixed parts 2001, the connection part 203 is forced to move and the force is used to push the moving part 202. If the thrust rod 31 continues to push toward the moving part 2002, the moving part 2002 under force will start to perform a crimping action to crimp a terminal 3. The terminal 3 for crimping is, in general, a cable terminal of international public standards. The cable terminal can be inserted into a cable and deformed by crimping to be tightly combined with the cable. According to the outer diameter length of the terminal 3, in order to successfully and tightly combine the terminal 3 and the cable, the force of the pressure on the terminal 3 needs to be appropriate, otherwise the consequences described in the background technology paragraph will occur. The utility model can automatically measure the outer diameter length of the terminal 3 to be crimped, so as to ensure that the terminal 3 can be properly stressed and crimped successfully.

[0028] In order to accurately measure the outer diameter of the terminal 3, the storage unit 20 stores a pressure threshold. For example, the pressure threshold may be preset to correspond to a pressure of 30 bar. The control unit 10 determines whether the force applied to the thrust rod 31 is greater than or equal to the pressure threshold stored in the storage unit 20 according to the pressure signal.

[0029] The control unit 10 controls the hydraulic pump 34 to pressurize the hydraulic circuit 33 according to a start signal to push the thrust rod 31 toward the moving part 2002 so that the moving part 2002 can press the terminal 3. When the control unit 10 determines that the force on the thrust rod 31 is greater than or equal to a pressure threshold according to the pressure signal, the control unit 10 determines that the moving part 2002 pushed by the thrust rod 31 begins to touch the terminal 3, and at this time, the control unit 10 immediately calculates the outer diameter length of the terminal 3 according to the distance sensing signal received. On the contrary, when it is determined that the force on the thrust rod 31 is less than the pressure threshold according to the pressure signal, the control unit 10 does not calculate the outer diameter length of the terminal 3 according to the distance sensing signal received. The method of measuring the outer diameter length of the terminal 3 in this way can be more accurate than simply calculating the outer diameter length according to the hydraulic pressure change data of the hydraulic jack 30 moving the thrust rod 31. This is because there may be a slight mechanical error between the moving distance of the thrust rod 31 and the moving distance of the moving component 2002, so it is more accurate to use the distance sensing unit 40 located in the moving component 2002 as a basis for measuring the outer diameter length.

[0030] When the control unit 10 calculates the outer diameter length of the terminal 3, the control unit 10 controls the hydraulic jack 30 to push the thrust rod 31 toward the movable part 2002 by an appropriate crimping distance according to a stroke corresponding to the outer diameter length, and the control unit 10 further controls the hydraulic jack 30 to retract the thrust rod 31 to release the push and pressure on the movable part 2002.

[0031] The moving part 2002 of the mold 2 can be applied to various terminals with different outer diameters on the market, so the user of the present invention does not need to replace the mold 2 to correspond to various terminals with different outer diameters. In this way, the present invention can help the user save effort in replacing the mold 2.

[0032] Furthermore, when the control unit 10 determines that the moving part 2002 begins to lightly touch the terminal 3, the control unit 10 can accurately measure the relative distance of the moving part 2002 relative to the fixed part 2001 according to the sensing distance signal generated by the distance sensing unit 40, and then calculate the outer diameter length of the terminal 3, so as to automatically formulate the corresponding stroke later, so that the thrust rod 31 only pushes the appropriate crimping distance, so as to properly crimp the terminal 3. The terminal 3 that is properly crimped, as described in the previous technical paragraph, can avoid the terminal 3 from being broken due to excessive force, or avoid the terminal 3 from being insufficiently forcefully combined with the cable inserted in the terminal 3. In this way, the utility model can automatically and accurately calculate the outer diameter length of the terminal 3, thereby helping the user save manpower to confirm the outer diameter length of the terminal 3, making the overall crimping operation of the terminal 3 smoother and more efficient.

[0033] See also Figure 2 , Figure 3 and Figure 4 As shown, in one embodiment of the present invention, the distance sensing unit 40 may be provided with a plurality of distance sensors, such as a first distance sensor 41 and a second distance sensor 42. The first distance sensor 41 and the second distance sensor 42 are electrically connected to the control unit 10, respectively, and the first distance sensor 41 and the second distance sensor 42 are both optical distance sensors, such as infrared distance sensors. Each infrared distance sensor measures the relative distance of the moving part 2002 relative to the fixed part 2001 in an optical manner of calculating the infrared reflection distance to generate the sensing distance signal. In other embodiments, the distance sensors may also be distance sensors of other quantities and other forms.

[0034] In this embodiment, the fixed part 201 includes a front fixed part 201A and a rear fixed part 201B, and the movable part 202 includes a front movable part 202A and a rear movable part 202B. The first distance sensor 41 is disposed at the front fixed part 201A and faces the front movable part 202A of the movable part 2002 in the first direction Dir1 to measure a first relative distance D1 of the front movable part 202A of the movable part 2002 relative to the front fixed part 201A and generate a first sensing distance signal. The second distance sensor 42 is disposed at the rear fixed portion 201B and faces the rear moving portion 202B of the moving component 2002 opposite to the first direction Dir1 to measure a second relative distance D2 of the rear moving portion 202B of the moving component 2002 relative to the rear fixed portion 201B and generate a second sensing distance signal. The aforementioned adjustment ring 206 is designed to contact the front fixed portion 201A and be blocked by the front fixed portion 201A when the connecting portion 203 moves excessively toward the first direction Dir1.

[0035] When the control unit 10 calculates the outer diameter length of the terminal 3 according to the received distance sensing signal, the control unit 10 calculates the outer diameter length of the terminal 3 according to the received first sensing distance signal and the second sensing distance signal. In detail, the storage unit 20 further stores an outer diameter crimping distance comparison table, a first measurement comparison table, and a second measurement comparison table. When the control unit 10 calculates the outer diameter length of the terminal 3 according to the first sensing distance signal and the second sensing distance signal, the control unit 10 generates a first outer diameter result according to the first sensing distance signal and the first measurement comparison table, and generates a second outer diameter result according to the second sensing distance signal and the second measurement comparison table, and then adds the first outer diameter result and the second outer diameter result and divides them by two to calculate the outer diameter length of the terminal 3. That is to say, if the utility model has N distance sensors, N is a positive integer greater than 1, the utility model will generate N corresponding measurement results of measuring the outer diameter of the terminal 3. The present invention can add up N measurement results and take the average value as the outer diameter length of the terminal 3 to be finally adopted.

[0036] Corresponding to Figure 3 and Figure 4 , Figure 3 It indicates that the moving part of the utility model has not been subjected to force and has not moved. Figure 4 It shows that the moving part of the present invention is moved to a state of lightly touching the terminal 3 under the force. Figure 3 and Figure 4, it can be seen that the distance measured by the first distance sensor 41 and the second distance sensor 42, that is, the distance of the vertically emitted and reflected infrared rays of the first distance sensor 41 and the second distance sensor 42 in this embodiment, will change with the movement of the moving part. In other embodiments, the arrangement of the first distance sensor 41 and the second distance sensor 42 can also be changed, and the first distance sensor 41 and the second distance sensor 42 are still used to measure the change of the relative distance between the moving part and the fixed part before and after the movement.

[0037] After determining the outer diameter length of the terminal 3 , the control unit 10 sets the stroke according to the outer diameter length and the outer diameter crimping distance comparison table stored in the storage unit 20 to control the hydraulic jack 30 to push the thrust rod 31 to the appropriate crimping distance.

[0038] In one embodiment, the utility model further comprises a screen unit 50, an input unit 60 and a communication unit 70, and the screen unit 50, the input unit 60 and the communication unit 70 are electrically connected to the control unit 10 respectively. The input unit 60 has a plurality of buttons electrically connected to the control unit 10 respectively, such as a forward key 61, a backward key 62, a menu key 63 and a setting key 64. The forward key 61, the backward key 62, the menu key 63, the setting key 64 and the screen unit 50 are all arranged on the housing 100 of the body 1. The user can view the information displayed on the screen unit 50 and manipulate the buttons of the input unit 60 to make at least one selection on the menu.

[0039] For example, by operating the buttons on the input unit 60, the user can set the mode of operation of the present invention, such as switching the present invention to a setting mode or a use mode. The setting mode can also be called a learning mode, because in the setting mode, the control unit 10 of the present invention will learn the user's operation once, so as to reproduce the operating parameters set by the user in the future under the use mode. In addition, the user can also operate the buttons on the input unit 60 to make the buttons generate the aforementioned start signal to the control unit 10.

[0040] When the control unit 10 receives a setting mode signal generated by the input unit 60, the control unit 10 enters the setting mode according to the setting mode signal, and when the control unit 10 receives a use mode signal generated by the input unit 60, the control unit 10 exits the setting mode and enters the use mode according to the use mode signal.

[0041] When the control unit 10 is in the setting mode and receives a setting parameter signal generated by the input unit 60, the control unit 10 updates the outer diameter crimping distance comparison table stored in the storage unit 20 according to the setting parameter signal. When the control unit 10 is in the use mode and receives the start signal generated by the input unit 60, the control unit 10 starts to formulate the stroke according to the outer diameter length and the outer diameter crimping distance comparison table to control the hydraulic jack 30 to push the thrust rod 31 to the appropriate crimping distance.

[0042] In other words, in this embodiment, the user can set parameters in advance through the input unit 60, and when the user starts to use the utility model to crimp a new terminal 3 through the input unit 60, the utility model can fully-automatically measure the outer diameter length of the terminal 3 after receiving the start signal and directly and appropriately crimp the terminal 3 based on the measured outer diameter length and the pre-set parameters.

[0043] Furthermore, the stroke of the outer diameter length set by the control unit 10 also includes a retraction distance corresponding to the outer diameter length. After the control unit 10 controls the hydraulic jack 30 to push the thrust rod 31 toward the moving part 2002 by the appropriate crimping distance according to the stroke, the control unit 10 controls the hydraulic jack 30 to retract the thrust rod 31 according to the retraction distance.

[0044] In another embodiment, when the control unit 10 calculates the outer diameter length of the terminal 3, the control unit 10 controls the screen unit 50 to display an outer diameter length information corresponding to the outer diameter length. And, under this usage mode, the control unit 10 provides the user with the option of confirming whether the outer diameter length information displayed by the screen unit 50 is reasonable. The reason is that in some specific application fields, there may be a small probability that the terminal 3 does not meet the specifications of international regulations. In such a case, an inner diameter distance of the terminal 3 may not correspond to the outer diameter distance in accordance with international regulations, so that the user needs to confirm the specifications of the terminal 3 more carefully. In this relatively rare case, the utility model can be designed as a semi-automatic working form to give the user the option of confirming whether the outer diameter length information is reasonable.

[0045] When the user confirms that the outer diameter length information is reasonable, the user can confirm it by operating the input unit 60. When the control unit 10 receives a confirmation signal generated by the input unit 60, the control unit 10 will further control the hydraulic jack 30 to push the thrust rod 31 toward the moving part 2002 to the appropriate crimping distance according to the stroke. When the control unit 10 receives a rejection signal generated by the input unit 60, the control unit 10 will jump out of the use mode and enter the setting mode, so that the user can readjust the parameters by operating the input unit 60, that is, in the setting mode, the control unit 10 updates the setting of the stroke corresponding to the outer diameter length according to the setting parameter signal generated by the input unit 60.

[0046] In addition, the communication unit 70 of the utility model can be used for communication connection with an external device. The external device can be any electronic device with electronic storage and access functions, and the communication unit 70 is not limited to the way of communication connection with the external device. For example, the external device can be a remote control, and the remote control can wirelessly remotely control the operation of the utility model by radio frequency (RF). For example, the remote control can generate the setting parameter signal for setting the parameters of the utility model. When the control unit 10 receives the setting parameter signal from the external device through the communication unit 70, the control unit 10 can update the outer diameter crimping distance comparison table stored in the storage unit 20 according to the setting parameter signal to adjust the stroke of crimping the terminal 3.

[0047] See also Figure 5 and Figure 6 As shown, Figure 5 and Figure 6 FIG. 1 is a flow chart of steps executed by the control unit 10 in one embodiment. The control unit 10 executes the following steps:

[0048] Step S1: Receive a signal, for example, the signal generated by the input unit 60 or the signal generated by the external device.

[0049] Step S2: Determine whether the received signal is the setting mode signal.

[0050] Step S3: When the received signal is determined to be the setting mode signal, the setting mode is entered, and the outer diameter crimping distance comparison table stored in the storage unit 20 is updated according to the received setting parameter signal, such as the crimping setting parameter signal, and step S1 is executed.

[0051] Step S4: When it is determined that the received signal is not the setting mode signal, the received signal is determined to be the use mode signal and the use mode is entered.

[0052] Step S5: Determine whether the activation signal is received from the input unit 60. When it is determined that the activation signal has not been received, step S5 is executed.

[0053] Step S6 : When it is determined that the start signal is received, the hydraulic jack 30 is controlled to push the thrust rod 31 toward the moving component 2002 , and the pressure signal is received from the hydraulic jack 30 .

[0054] Step S7: Determine whether the force on the push rod 31 is greater than or equal to the pressure threshold according to the pressure signal. When it is determined that the force on the push rod 31 is less than the pressure threshold, execute step S6.

[0055] Step S8: When it is determined that the force on the push rod 31 is greater than or equal to the pressure threshold, the push rod 31 is stopped from being pushed, and a plurality of distance sensing signals generated by a plurality of distance sensors are received, a plurality of distance sensing results are generated according to the distance sensing signals, and an average value of the distance sensing results is calculated as the outer diameter length of the terminal.

[0056] Step S9: controlling the screen unit 50 to display the outer diameter length information corresponding to the outer diameter length.

[0057] Step S10: Determine whether to start crimping automatically according to the setting of the use mode. The setting of the use mode is the setting parameter adjusted in the setting mode.

[0058] Step S11: When it is determined that the crimping is to be started fully automatically, the stroke is directly planned according to the outer diameter length and the outer diameter crimping distance comparison table to control the hydraulic jack 30 to push the thrust rod 31 to the appropriate crimping distance, and the hydraulic jack 30 is controlled to retract the thrust rod 31 according to the retraction distance.

[0059] Step S12: When it is determined that the crimping is not fully automatic, it is further determined whether the confirmation signal is received from the input unit. When it is determined that the confirmation signal is received, step S11 is executed. When it is determined that the confirmation signal is not received, it is determined that the rejection signal is received and step S3 is executed.

Claims

1. A crimping device without mold replacement, characterized in that: include: A mold has a fixed component and a movable component; wherein the fixed component is provided with a distance sensing unit, the distance sensing unit is used to sense a relative distance between the movable component and the fixed component to generate a sensing distance signal; A body connected to the mold and having: A hydraulic jack is provided with a thrust rod, a hydraulic circuit, a hydraulic pump and a hydraulic sensor; wherein the hydraulic circuit connects the hydraulic pump and the thrust rod, and the hydraulic sensor senses a force applied to the hydraulic circuit to generate a pressure signal; a control unit electrically connected to the distance sensing unit of the mold, the hydraulic pump and the hydraulic sensor to receive the sensing distance signal and the pressure signal; wherein the control unit controls the hydraulic pump to pressurize the hydraulic circuit according to a start signal to push the thrust rod toward the moving component so that the moving component can be crimped with a terminal; When the control unit determines that the force of the hydraulic circuit is greater than or equal to a pressure threshold according to the pressure signal, the control unit calculates an outer diameter length of the terminal according to the received distance sensing signal; When the control unit calculates the outer diameter length of the terminal, the control unit controls the hydraulic jack to push the thrust rod toward the moving component by an appropriate crimping distance according to a stroke corresponding to the outer diameter length, and further controls the hydraulic jack to retract the thrust rod.

2. The die-free crimping device according to claim 1, characterized in that: Further including: a storage unit, electrically connected to the control unit, and storing the pressure threshold and an outer diameter crimping distance comparison table; The control unit determines the stroke according to the comparison table of the outer diameter length and the outer diameter crimping distance to control the hydraulic jack to push the thrust rod to the appropriate crimping distance.

3. The die-free crimping device according to claim 2, characterized in that: Further including: an input unit, electrically connected to the control unit; When the control unit receives a setting mode signal generated by the input unit, the control unit enters a setting mode, and when the control unit receives a use mode signal generated by the input unit, the control unit exits the setting mode and enters a use mode. Wherein, when the control unit is in the setting mode and the control unit receives a setting parameter signal generated by the input unit, the control unit updates the outer diameter crimping distance comparison table stored in the storage unit according to the setting parameter signal; When the control unit is in the use mode and receives the start signal generated by the input unit, the control unit starts to formulate the stroke according to the outer diameter length and the outer diameter crimping distance comparison table to control the hydraulic jack to push the thrust rod to the appropriate crimping distance.

4. The die-free crimping device according to claim 2, characterized in that: Further including: a communication unit electrically connected to the control unit and for communication with an external device; When the control unit receives a setting parameter signal from the external device through the communication unit, the control unit updates the outer diameter crimping distance comparison table stored in the storage unit according to the setting parameter signal.

5. The die-free crimping device according to claim 1, characterized in that: The distance sensing unit further includes at least one optical distance sensor. The at least one optical distance sensor measures the relative distance between the moving component and the fixed component in an optical manner to generate the sensing distance signal.

6. The die-free crimping device according to claim 5, characterized in that: The at least one optical distance sensor includes a first distance sensor and a second distance sensor, and the thrust rod pushes the moving component toward a first direction; The first distance sensor faces the moving component in the first direction to measure a first relative distance between the moving component and the fixed component to generate a first sensing distance signal, and the second distance sensor faces the moving component away from the first direction to measure a second relative distance between the moving component and the fixed component to generate a second sensing distance signal; When the control unit calculates the outer diameter length of the terminal according to the received distance sensing signal, the control unit calculates the outer diameter length of the terminal according to the received first sensing distance signal and the second sensing distance signal.

7. The die-free crimping device according to claim 6, characterized in that: Further including: a storage unit, electrically connected to the control unit, and storing the pressure threshold, a first measurement comparison table, and a second measurement comparison table; When the control unit calculates the outer diameter length of the terminal according to the first sensing distance signal and the second sensing distance signal, the control unit generates a first outer diameter result according to the first sensing distance signal and the first measurement comparison table, and generates a second outer diameter result according to the second sensing distance signal and the second measurement comparison table, and then averages the first outer diameter result and the second outer diameter result to calculate the outer diameter length of the terminal.

8. The die-free crimping device according to claim 1, characterized in that: Further including: an input unit, electrically connected to the control unit; a screen unit, electrically connected to the control unit; When the control unit calculates the outer diameter length of the terminal, the control unit controls the screen unit to display outer diameter length information corresponding to the outer diameter length; When the control unit receives a confirmation signal generated by the input unit, the control unit further controls the hydraulic jack to push the thrust rod toward the moving component to the appropriate crimping distance according to the stroke.

9. The die-free crimping device according to claim 8, characterized in that: When the control unit receives a rejection signal generated by the input unit, the control unit exits a use mode and enters a setting mode; When the control unit is in the setting mode and receives a setting parameter signal generated by the input unit, the control unit updates the stroke corresponding to the outer diameter length according to the setting parameter signal.

10. The die-free crimping device according to claim 1, characterized in that: The stroke corresponding to the outer diameter length includes a retraction distance corresponding to the outer diameter length. After the control unit controls the hydraulic jack to push the thrust rod toward the moving part for the appropriate crimping distance according to the stroke, the control unit controls the hydraulic jack to retract the thrust rod according to the retraction distance.

11. The die-free crimping device according to claim 1, characterized in that: The moving part of the mold further comprises: Multiple moving parts for crimping the terminal; A connecting portion, which is cylindrical and extends in an axial direction and is connected to one of the moving portions; An adjustment ring, adjustable and fixed around the columnar connection portion; When the thrust rod pushes the moving component, the thrust rod pushes the connecting portion to move toward the axial direction, so as to move the moving portion through the force component of one of the connected moving portions; When the connecting portion moving toward the axial direction touches the fixing component, the connecting portion stops moving toward the axial direction.

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