A terminal insertion mechanism

Abstract

The utility model relates to the field of terminal plug -in, especially a kind of terminal plug -in mechanism, feeding belt part contains material channel and the cutting material belt device located outside material channel, the non-supporting surface in material channel is equipped with the slot to the outside for terminal to have one end to be worn outside the slot, the inside of material channel is reserved to provide the avoidance slot for the through of folding foot, first linear movement module is equipped with tension and pressure sensor, displacement sensor and pneumatic finger are set on the output end of first linear movement module, the output end of second linear movement module and the acquisition end of tension and pressure sensor are opposite each other, while, the limit block equipped with on second linear movement module and the moving path of displacement sensor sensing end intersect;The utility model uses the material channel specially adapted to the terminal with folding foot, the material channel avoids the situation of being stuck with folding foot by the mode of selecting avoidance slot inside, when terminal is moved, folding foot passes in the space provided by avoidance slot, and the feeding of terminal is successfully realized.

Description

Technical Field

[0001] This utility model relates to the field of terminal plugging, and more particularly to a terminal plugging mechanism. Background Technology

[0002] The stator coil bobbin is a ring-shaped component.

[0003] Terminals need to be installed on this coil frame. Generally, the terminals are inserted into the frame.

[0004] However, traditional methods have very limited monitoring of terminal assembly, resulting in defective stator coil bobbins. For example, one terminal in the material strip may be defective. In reality, there is a lack of means to inspect terminals for defects from the material strip, and there is no corresponding equipment to inspect each separated individual terminal. Therefore, the issue of whether the terminal dimensions are up to standard has consistently plagued the yield rate of the finished product. Such terminal defects include, but are not limited to: defective terminals being shorter than other compliant terminals. In traditional equipment, because it is impossible to monitor whether a terminal is defective, the depth to which the terminal is inserted into the bobbin often does not meet expectations. This can cause the terminal to wobble, indicating that the installation between the terminal and the bobbin is not tight enough and there is a risk of it falling off. Furthermore, there is a lack of monitoring of the applied pressure. To insert the terminal into the bobbin, pressure must be applied. Excessive pressure will exceed the terminal's own rigidity, causing deformation. On the other hand, if the applied pressure does not reach the expected level, it reflects that the connection between the terminal and the bobbin is not secure (the standard assembly of terminals and bobbins is an interference fit).

[0005] In addition, the structure of the terminals is not as flat as in the traditional way. The new terminal structure has folded feet. The traditional method is to use equipment specially designed for flat terminal structures. Obviously, the traditional equipment is not compatible with the new terminal structure. Utility Model Content

[0006] To solve the above problems, this utility model provides a terminal insertion mechanism. By setting multiple monitoring methods with different detection purposes on the equipment, the degree of assembly between the terminal and the frame can be obtained from these monitoring methods, and the terminal with folded feet can be assembled onto the frame.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a terminal insertion mechanism, comprising a workbench for terminal insertion operations, characterized in that it further comprises a feeding belt section and a terminal transfer section. The feeding belt section includes a material channel and a cutting belt device located outside the material channel. The non-supporting surface inside the material channel is provided with a slot leading to the outside, so that one end of the terminal can pass through the slot. An avoidance groove for the folding foot to pass through is reserved on the inner side of the material channel. The terminal transfer section includes a pneumatic finger and a linear movement mechanism composed of multiple linear movement modules. The first linear movement module is provided with a tension / compression sensor. A displacement sensor and a pneumatic finger are disposed on the output end of the first linear movement module. The output end of the second linear movement module is opposite to the acquisition end of the tension / compression sensor. At the same time, a limiting block provided on the second linear movement module intersects the movement path of the sensing end of the displacement sensor.

[0008] The beneficial effects of this utility model are:

[0009] This invention utilizes a feed channel specifically designed for terminals with folded feet. This feed channel avoids jamming with the folded feet by selecting internal clearance grooves. During terminal transfer, the folded feet pass within the space provided by the clearance grooves, successfully feeding the terminals. Furthermore, the linear movement mechanism consists of multiple linear movement mechanisms. The first linear movement module is equipped with both tension / compression sensors and displacement sensors. During the terminal insertion process, the tension / compression sensor's acquisition end acts as the power transmission part that withstands the pressure push, collecting the pressure in real time when the terminal is inserted into the frame. The displacement sensor is located at the output end of the first linear movement module. As the output end of the first linear movement module moves, its sensing end contacts the limiting block, and the displacement sensor outputs a corresponding electrical signal, indicating that the pneumatic finger has reached the predetermined position.

[0010] This invention can be used in conjunction with a host computer, and of course, it can also be used with other devices, such as a buzzer that only has an alarm function. The advantage of using a host computer is that it can further improve the level of automation. The host computer can not only display specific information directly, but also make in-depth adjustments to the parameters of the above-mentioned sensors.

[0011] In this embodiment, the first linear movement module and the second linear movement module are existing technologies, both of which use existing cylinders or motors as power sources to drive the slider to move on the slide rail.

[0012] In this specific embodiment, a third linear motion module is also included. The third linear motion module has the same structure as the first linear motion module and the second linear motion module. All of them change the multi-dimensional position of the pneumatic finger to ensure that the pneumatic finger can accurately clamp the terminal.

[0013] The testing process of this utility model is explained in detail with reference to the host computer: The pneumatic fingers grip the terminals on the material handling channel, pushing the terminals longitudinally into the insertion holes on the frame. The terminal transfer section transfers the terminals according to preset values. When encountering terminals with relatively low heights, the bottom of the terminal can only reach the lower-middle area within the insertion hole of the frame, rather than fully contacting the bottom surface of the insertion hole. Simultaneously, the assembly between the terminal and the frame should be an interference fit. The deeper the terminal penetrates into the insertion hole, the greater the required pressure. However, for terminals with relatively low heights, the insertion depth is shallow, and the compactness is not achieved as expected, causing the terminal to wobble on the frame. This problem is detected by the host computer. The displacement sensor and limit block restrict the movement of the output end of the first linear movement module. In other words, the movement is a fixed quantity, while the pressure value, as a variable, is converted into an electrical signal and sent to the host computer. The host computer uses this electrical signal to determine whether the pressure value has reached the preset value, thereby determining whether the fit between the terminal and the frame achieves the expected compactness.

[0014] The feeding belt section also includes a cutting belt device, which separates the terminals from the feed belt. The cutting belt device is located outside the feed channel, which has a pre-drilled cutting opening. The cutting part of the cutting belt device is kept in a corresponding state with the cutting opening. The cutting part enters the feed channel through the cutting opening. The terminals are fixed in the feed belt by connecting pieces. The cutting part contacts the connecting pieces and breaks the connecting pieces, thereby separating the terminals from the feed belt.

[0015] The strip is distributed below the terminals. Considering that the strip itself is made of aluminum sheet, if it is not cut, the entire strip will be in a free state in the collection box. For example, it may bend freely in the collection box, which will cause the strip to overlap irregularly. In this case, the strip is easy to overflow, and there will be a lot of unused space in the collection box. Therefore, the cutting part includes a cutter with two blades. In this embodiment, the blades of the two blades are linear and perpendicular to each other. For example, the blade of the first blade is horizontal, which is to correspond to the connecting piece, and the blade of the second blade is vertical, which is to cut the strip. Therefore, the connecting piece and the strip are cut simultaneously. In addition, the advantage of simultaneous cutting is that it solves the problem of the overly complicated insertion process caused by cutting the strip and the connecting piece separately, and optimizes the entire insertion process.

[0016] In addition, the feeding belt section also includes a stator rod. The side of the feed channel has an opening for the stator rod to pass through. The stator rod passes through the opening and directly abuts against the feed belt and terminals. The purpose is to ensure that the terminals and feed belt do not shift during cutting. Sufficient space is reserved in the feed channel for the feed belt and terminals to move. The blade area is small. During cutting, the entire feed belt is deformed with an arched arc. During the deformation, the connecting piece and the blade slide. This results in a partial misalignment between the actual cutting area and the connecting piece. The stator rod acts directly outside the non-working area of ​​the cutting section. At this time, the feed belt and terminals pressed inside the feed channel are flat. When the cutter cuts, it can accurately cut the entire connecting piece.

[0017] Of course, this timing of cutting also needs to be combined with the use of other sensors. The use of these sensors is existing technology, and their structure and usage will not be elaborated here.

[0018] Outside the feed channel, there is also an anti-backward section, which is used to prevent the feed belt from backing up. The anti-backward section includes a positioning guide block, a spring, and an anti-backward component. The anti-backward component has a laterally open receiving portion. The inner end of the positioning guide block and the spring are located in the receiving portion. One end of the positioning guide block is connected to one end of the spring, while the other end of the spring is connected to the inside of the receiving portion. The outer end of the positioning guide block is a pointed tip, and the inclined surface of the positioning guide block faces away from the forward direction of the feed belt. The positioning guide block passes through the positioning hole of the feed belt to achieve the anti-backward effect of the feed belt.

[0019] It should be noted that there is only one cutting section, which is opposite to one side of the feed channel. On the other side of the feed channel, there is a material dragging section. This material dragging section is for the material strip in the feed channel. By contacting the material strip, it drags the material strip and moves it in the feed channel, so that the terminals on the material strip can be moved to the working area of ​​the cutting section.

[0020] The material feeding section includes hanging pins, which are positioned to the positioning holes in the material strip. The material strip has several positioning holes, and the hanging pins are opposite to the positioning holes. When it is necessary to establish a connection with the material strip, the hanging pins pass directly through the positioning holes.

[0021] Of course, the material feeding section also includes other linear movement mechanisms, as well as linear movement mechanisms that drive the stator rod and the cutting section to move. These are all used to provide movement strokes in different directions. These linear movement mechanisms are existing technologies, and their structures will not be described in detail. Attached Figure Description

[0022] Figure 1 This is a perspective view of the present invention.

[0023] Figure 2 This is a 3D view of the feeder belt section.

[0024] Figure 3 yes Figure 2 A structural diagram that hides part of the material channel.

[0025] Figure 4 yes Figure 3 Enlarged diagram of point A.

[0026] Figure 5 yes Figure 4 Enlarged diagram of point C.

[0027] Figure 6 This is an exploded view of the anti-reverse section.

[0028] Figure 7 This is a 3D diagram of the anti-reverse section.

[0029] Figure 8 yes Figure 2 A structural diagram showing a portion of the material channel hidden in another direction.

[0030] Figure 9 yes Figure 8 Enlarged diagram of point B.

[0031] Figure 10 This is a 3D diagram of the material channel.

[0032] Figure 11 yes Figure 10 Enlarged diagram of point D.

[0033] Figure 12 It is a 3D view of part of the material channel and terminal after they are assembled.

[0034] Figure 13 This is a 3D view of the terminal transfer section.

[0035] Figure 14 This is a 3D view of the frame and terminals after assembly. Detailed Implementation

[0036] Please see Figure 1-14As shown, a terminal insertion mechanism includes a workbench 1 for inserting terminals 4. It is characterized by further including a feeding belt section 2 and a terminal transfer section 3 disposed on the workbench 1. The feeding belt section 2 includes a feed channel 21 and a cutting belt device 22 located outside the feed channel 21. The non-supporting surface inside the feed channel 21 has a slot 22a leading to the outside, allowing one end of the terminal 4 to protrude through the slot 22a. An obstacle groove 22b is reserved on the inner side of the feed channel 21 for the passage of a folding foot 41. The terminal transfer section 3 includes pneumatic fingers 31 and multiple linearly moving modules. The linear movement mechanism consists of a first linear movement module 32 equipped with a tension / compression sensor 33, a displacement sensor 34, and a pneumatic finger 31. The output end of the second linear movement module 35 (in this embodiment, the second linear movement module 35 is equipped with a pressure plate 35-a, which presses down on the acquisition end of the tension / compression sensor 33) is opposite to the acquisition end of the tension / compression sensor 33. At the same time, the limiting block 36 provided on the second linear movement module 35 intersects the movement path of the sensing end of the displacement sensor 34.

[0037] The beneficial effects of this utility model are:

[0038] This utility model uses a feed channel 21 specifically adapted to the terminal 4 with a folded foot 41. The feed channel 21 avoids jamming with the folded foot 41 by selecting an internal clearance groove 22b. When the terminal 4 is transferred, the folded foot 41 passes through the space provided by the clearance groove 22b, successfully realizing the feeding of the terminal 4. In addition, the linear movement mechanism is composed of multiple linear movement mechanisms. The first linear movement module 32 is equipped with a tension / compression sensor 33 and a displacement sensor 34. During the insertion process of the terminal 4, the acquisition end of the tension / compression sensor 33 serves as the power transmission part that bears the pressure push and collects the pressure when the terminal 4 is inserted into the skeleton 6 in real time. The displacement sensor 34 is set on the output end of the first linear movement module 32. As the output end of the first linear movement module 32 moves, its sensing end contacts the limit block 36, and the displacement sensor 34 outputs a corresponding electrical signal. This electrical signal indicates that the pneumatic finger 31 has reached the predetermined position.

[0039] This invention can be used in conjunction with a host computer, and of course, it can also be used with other devices, such as a buzzer that only has an alarm function. The advantage of using a host computer is that it can further improve the level of automation. The host computer can not only display specific information directly, but also make in-depth adjustments to the parameters of the above-mentioned sensors.

[0040] A host computer is a computer that can directly issue control commands.

[0041] In this embodiment, the first linear movement module 32 and the second linear movement module 35 are existing technologies, both of which use existing cylinders or motors as power sources to drive the slider to move on the slide rail.

[0042] In this specific embodiment, a third linear movement module 37 is also included. The third linear movement module 37 drives the second linear movement module 35 to move in the lateral direction. The third linear movement module 37 has the same structure as the first linear movement module 32 and the second linear movement module 35. They all change the multi-dimensional position of the pneumatic finger 31 to ensure that the pneumatic finger 31 can accurately clamp the terminal 4.

[0043] The testing process of this utility model is explained in detail with reference to the host computer: The pneumatic finger 31 grips the terminal 4 on the material channel 21. The pneumatic finger 31 holds the upper end of the terminal 4 and pushes it longitudinally into the insertion hole on the frame 6. The terminal transfer part 3 transfers the terminal 4 according to a preset value. When encountering a terminal 4 with a relatively short height, the bottom of the terminal 4 can only reach the lower-middle area inside the insertion hole of the frame 6, rather than fully contacting the bottom surface inside the insertion hole. The assembly between the terminal 4 and the frame 6 should be an interference fit. The deeper the terminal 4 goes into the insertion hole, the greater the pressure required. For terminals with relatively short heights... The insertion depth is relatively shallow, and the compactness effect does not meet expectations, causing terminal 4 to wobble on the frame 6. Of course, this problem can be detected from the host computer. The displacement sensor 34 and the limit block 36 limit the movement of the output end of the first linear movement module 32. In other words, the movement is a fixed quantity, while the pressure value, as a variable, is converted into an electrical signal and sent to the host computer. The host computer judges whether the pressure value has reached the preset value based on the electrical signal, thereby determining whether the fit between terminal 4 and frame 6 has achieved the expected compactness performance. There is also a situation where the relative height of terminal 4 is relatively high, and the tension and pressure sensor 33 will also detect abnormally large values.

[0044] The cutting strip device 22 separates the terminal 4 from the material strip 5. The cutting strip device 22 is set outside the material channel 21, which has a pre-reserved cutting opening. The cutting part in the cutting strip device 22 is kept in a corresponding state with the cutting opening. The cutting part enters the material channel 21 through the cutting opening. The terminal 4 is fixed in the material strip 5 by a connecting piece (both the terminal and the connecting piece are stamped). The cutting part contacts the connecting piece and breaks the connecting piece, thereby separating the terminal 4 from the material strip 5.

[0045] The strip 5 is located below the terminal 4. Considering that the strip 5 is made of aluminum sheet, if it is not cut, the entire strip 5 will be in a free state in the collection box. For example, it may bend freely in the collection box, which will cause the strip 5 to overlap irregularly. In this case, the strip 5 is easy to overflow, and there will be a lot of unused space in the collection box. Therefore, the cutting part includes a cutter with two blades. In this embodiment, the blades of the two blades are linear and perpendicular to each other. For example, the blade of the first blade 22g is horizontal, which is to correspond to the connecting piece, and the blade of the second blade 22h is vertical, which is to cut the strip 5. Therefore, the connecting piece and the strip 5 are cut simultaneously. In addition, the advantage of simultaneous cutting is that it solves the problem of the insertion process being too complicated when the strip 5 and the connecting piece are cut separately, and optimizes the entire insertion process.

[0046] In addition, the feeding belt section 2 also includes a stator rod 22c. The side of the feed channel 21 is provided with an opening for the stator rod 22c to pass through. The stator rod 22c passes through the opening and acts directly on the feed belt 5 and the terminal 4. The purpose is to ensure that the terminal 4 and the feed belt 5 do not shift during cutting. Sufficient space is reserved in the feed channel 21 for the feed belt 5 and the terminal 4 to move. However, the area of ​​the blade is small. During cutting, the entire feed belt 5 has an arched arc deformation. During the deformation, the connecting piece and the blade slide. This results in a partial misalignment between the actual cutting area and the connecting piece. The stator rod 22c acts directly outside the non-working area of ​​the cutting section. At this time, the feed belt 5 and the terminal 4 pressed inside the feed channel 21 are flat. When the cutter cuts, it can accurately cut the entire connecting piece (in this embodiment, the stator rod 22c only acts on the feed belt 5).

[0047] Of course, this timing of cutting also needs to be combined with the use of other sensors. The use of these sensors is existing technology, and their structure and usage will not be elaborated here.

[0048] Outside the feed channel 21, an anti-backward part is also provided to prevent the feed belt 5 from backing up. The anti-backward part includes a positioning guide block 22d, a spring 22e, and an anti-backward component 22f. The anti-backward component 22f has a laterally open receiving part. The inner end of the positioning guide block 22d and the spring 22e are set in the receiving part. The positioning guide block 22d is connected to one end of the spring 22e, while the other end of the spring 22e is connected to the inside of the receiving part. The outer end of the positioning guide block 22d is a pointed tip. The inclined surface of the positioning guide block 22d faces away from the forward direction of the feed belt 5. The positioning guide block 22d passes through the positioning hole 51 of the feed belt 5 to achieve the anti-backward effect of the feed belt.

[0049] It should be noted that there is only one cutting section, which is opposite to one side of the feed channel 21. On the other side of the feed channel 21, there is a material dragging section. This material dragging section is for the material belt 5 in the feed channel 21. By contacting the material belt 5, it drags the material belt 5 to move in the feed channel 21, so that the terminal 4 on the material belt 5 can move to the working area of ​​the cutting section.

[0050] The material feeding section includes a hanging pin 23a, which is positioned to the positioning hole 51 in the material strip 5. The material strip 5 has several positioning holes 51. The hanging pin 23a is opposite to the positioning hole 51. When it is necessary to establish a connection with the material strip 5, the hanging pin 23a passes directly through the positioning hole 51.

[0051] Of course, the material handling section also includes other linear movement mechanisms to provide movement in different directions. These linear movement mechanisms are existing technologies, and their structures will not be described in detail here.

[0052] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A terminal crimping mechanism comprising a worktable for performing a terminal crimping operation, characterized by comprising: It also includes a feeding belt section and a terminal transfer section. The feeding belt section includes a material channel, and the non-supported surface of the material channel has a slot leading to the outside, so that one end of the terminal can pass through the slot. The inner side of the material channel has a clearance groove for the folding foot to pass through. The terminal transfer section includes a pneumatic finger and a linear movement mechanism composed of multiple linear movement modules. The first linear movement module is equipped with a tension and compression sensor, and the displacement sensor and the pneumatic finger are set on the output end of the first linear movement module. The output end of the second linear movement module is opposite to the acquisition end of the tension and compression sensor. At the same time, the limiting block on the second linear movement module intersects the movement path of the sensing end of the displacement sensor.

2. The terminal insertion mechanism according to claim 1, characterized in that, The feeding belt section also includes a cutting belt device. A cutting opening is provided on the material channel. The cutting belt device has a cutting part, which is kept in a corresponding state with the cutting opening. The cutting part enters the material channel through the cutting opening.

3. The terminal insertion mechanism according to claim 2, characterized in that, The cutting section includes a double-bladed cutting blade, which consists of a first blade and a second blade. The blade of the first blade is horizontal, and the blade of the second blade is vertical.

4. A terminal insertion mechanism according to claim 2, characterized in that, The feed belt section also includes a stator rod. An opening is provided on the side of the feed channel for the stator rod to pass through, and the stator rod passes through the opening and directly abuts against the feed belt and the terminal.

5. A terminal insertion mechanism according to claim 2, characterized in that, Outside the feed channel, there is also an anti-backward part, which is used to prevent the feed belt from backing up. The anti-backward part includes a positioning guide block, a spring, and an anti-backward component. The anti-backward component has a receiving part with a side opening. The inner end of the positioning guide block and the spring are located in the receiving part. One end of the positioning guide block is connected to one end of the spring, while the other end of the spring is connected to the inside of the receiving part. The outer end of the positioning guide block is a pointed tip. The inclined surface of the positioning guide block faces away from the forward direction of the feed belt. The positioning guide block passes through the positioning hole of the feed belt.

6. A terminal insertion mechanism according to claim 2, characterized in that, On the other side of the feed channel, there is a material dragging section, which includes a hanging pin, and the hanging pin is opposite to the positioning hole of the material strip.

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