A step-by-step dispensing device for a thermal protector

Abstract

The present invention provides a step-by-step dispensing device for a thermal protector, which includes a feeding rail, a tray, a dispensing mechanism, a positioning mechanism, a collecting mechanism, a picking claw and a transfer mechanism. Workpieces to be dispensed are arranged on the feeding rail; the tray is used for placing the workpieces with dispensed glue, and the positioning mechanism is used for positioning the workpieces; the dispensing mechanism is used for performing a dispensing operation on the workpieces; the collecting mechanism is used for placing the workpieces with dispensed glue into the tray; the transfer mechanism can drive the picking claw to move between the positioning mechanism, the dispensing mechanism and the collecting mechanism, and pick and place the workpieces, realizing the automated production of dispensing for the thermal protector and ensuring the product quality; and by setting multiple dispensing stations, the outer ring, pin positions and back of the pins of the workpieces are simultaneously dispensed, shortening the dispensing cycle of the workpieces, improving the production efficiency and reducing the production cost.

Description

Technical Field

[0001] The present invention relates to the field of manufacturing thermal protectors, and particularly to a step-by-step dispensing device for thermal protectors. Background Art

[0002] A thermal protector is a widely used protection component. When an electrical appliance operates abnormally, causing an increase in current and a rise in the surrounding temperature, when the temperature exceeds the temperature setting value of the thermal protector, the circuit is automatically disconnected to protect the electrical appliance. When the device cools down to a safe temperature, the contacts can automatically close. The thermal protector also has an overcurrent protection function: when the circuit is short-circuited or the motor is blocked, due to the rapid increase in current, a thermal effect is generated on the bimetal sheet, and the thermal sensing sheet quickly cuts off the current contact point using the torque principle.

[0003] In the production of thermal protectors, it is necessary to dispense glue on the outer ring, pin positions, and back of the pins of the thermal protector. In the prior art, it is generally divided into multiple processes and independently completed manually. The manual dispensing method has low production efficiency and is prone to missing processing; moreover, multi-process dispensing requires clamping multiple times, resulting in more quality hazards and unable to guarantee the quality of the product. Summary of the Invention

[0004] The technical problem to be solved by the present invention is that the manual multi-process dispensing method has low production efficiency and the quality of the product cannot be guaranteed. The present invention provides a step-by-step dispensing device for thermal protectors to solve the above problems.

[0005] The technical solution adopted by the present invention to solve its technical problems is: a step-by-step dispensing device for thermal protectors, including a feeding rail and a tray. The feeding rail is arranged with workpieces to be dispensed. The tray is used to place the workpieces with dispensed glue. It also includes a dispensing mechanism, a positioning mechanism, a material collecting mechanism, a picking claw, and a transfer mechanism arranged on the frame. The positioning mechanism is used to position the workpieces. The dispensing mechanism is used to perform dispensing operations on the workpieces. The material collecting mechanism is used to place the workpieces with dispensed glue into the tray. The picking claw is installed on the frame through the transfer mechanism, and the transfer mechanism can drive the picking claw to move between the positioning mechanism, the dispensing mechanism, and the material collecting mechanism.

[0006] Further: The positioning mechanism includes a positioning block, a first cylinder, a first slider, and a first guide rail. The positioning block is provided with a positioning groove. The workpieces on the feeding rail can slide into the positioning groove and fit inside the positioning groove. The first guide rail is arranged horizontally on the frame. The positioning block is fixedly installed on the first slider. The first slider is slidably arranged on the first guide rail. The cylinder body of the first cylinder is fixedly arranged on the frame. The piston rod of the first cylinder is fixedly connected to the first slider and is arranged parallel to the first guide rail.

[0007] Further: The dispensing mechanism includes a first station, a second station, and a third station. The first station can perform dispensing operations on the outer ring of the workpiece; the second station can perform dispensing operations on the pin positions of the workpiece; the third station can perform dispensing operations on the back of the pins of the workpiece. The first station, the second station, and the third station are all provided with dispensing barrels. The dispensing barrels are movably installed on the frame through barrel driving mechanisms. The barrel driving mechanisms can drive the dispensing barrels to move and align the nozzles of the dispensing barrels with the dispensing points of the workpiece.

[0008] Further: The first station includes a first driving motor, a vacuum chuck, and a connecting shaft. The connecting shaft is rotatably installed on the frame in the vertical direction. The upper end of the connecting shaft is fixedly connected to the vacuum chuck. The rotation of the connecting shaft can drive the vacuum chuck to rotate. A driven gear is fixedly installed in the middle of the connecting shaft. The first driving motor is fixedly installed on the frame. A driving gear is installed on the output shaft of the first driving motor. The driven gear and the driving gear are meshed.

[0009] Further: The second station includes a first rotary cylinder, a first clamping cylinder, and a first positioning claw. The cylinder body of the first rotary cylinder is fixedly installed on the frame. The rotation center of the first rotary cylinder is arranged in the vertical direction. The cylinder body of the first clamping cylinder is fixedly arranged on the rotor of the first rotary cylinder. The first positioning claw is installed on the first clamping cylinder and can perform closing or opening actions under the drive of the first clamping cylinder.

[0010] Further: The third station includes a second rotary cylinder, a second clamping cylinder, a third rotary cylinder, and a second positioning claw. The cylinder body of the third rotary cylinder is fixedly installed on the frame. The rotation center of the third rotary cylinder is arranged in the horizontal direction. The cylinder body of the second rotary cylinder is fixedly arranged on the rotor of the third rotary cylinder. The rotation center of the second rotary cylinder is perpendicular to the rotation center of the third rotary cylinder. The cylinder body of the second clamping cylinder is fixedly arranged on the rotor of the second rotary cylinder. The second positioning claw is installed on the second clamping cylinder and can perform closing or opening actions under the drive of the second clamping cylinder.

[0011] Further: The transfer mechanism includes a second linear motor, a second guide rail, a bracket, a second cylinder, and a third cylinder. The second guide rail is arranged horizontally. The second linear motor is arranged on the second guide rail and can move horizontally along the second guide rail. The bracket is fixedly arranged on the moving seat of the second linear motor. The cylinder body of the second cylinder is fixedly arranged on the bracket. The piston rod of the second cylinder is arranged vertically upward. An installation plate is fixedly arranged on the piston rod of the second cylinder. The cylinder body of the third cylinder is fixedly installed on the installation plate. The piston rod of the third cylinder is arranged horizontally and perpendicular to the second guide rail. An installation frame is fixedly arranged on the piston rod of the third cylinder. A third clamping cylinder is arranged on the installation frame. The material taking claw is installed on the third clamping cylinder and can perform a closing or opening action under the drive of the third clamping cylinder.

[0012] Further: The number of both the third clamping cylinder and the material taking claw is four. The four material taking claws are respectively a first material taking claw, a second material taking claw, a third material taking claw, and a fourth material taking claw. The first material taking claw can grab the workpiece on the positioning mechanism to the first working position; the second material taking claw can grab the workpiece on the first working position to the second working position; the third material taking claw can grab the workpiece on the second working position to the third working position; the fourth material taking claw can grab the workpiece on the third working position to the material receiving mechanism.

[0013] Further: The material receiving mechanism includes a transfer table, a fourth clamping cylinder, and a third positioning claw. The transfer table is fixedly installed on the frame. The first station, the second station, the third station, and the transfer table are arranged in a straight line. The cylinder block of the fourth clamping cylinder is fixedly installed on the transfer table. The third positioning claw is installed on the fourth clamping cylinder and can be driven by the fourth clamping cylinder to perform closing or opening actions. The material receiving mechanism further includes a material receiving claw, a fifth clamping cylinder, a third driving motor, a third guide rail, a third lead screw, a third slider, a fourth driving motor, a fourth guide rail, a fourth lead screw, a fourth slider, a fifth driving motor, a fifth guide rail, a fifth lead screw, and a fifth slider. The third guide rail is arranged horizontally on the frame. The third lead screw is installed on the third guide rail. The third slider is installed on the third lead screw. The rotation of the third lead screw can drive the third slider to slide along the third guide rail. The third driving motor is installed on the third guide rail, and the output shaft of the third driving motor is fixedly connected to the third lead screw. The fourth guide rail is fixedly arranged horizontally on the third slider and is perpendicular to the third guide rail. The fourth lead screw is installed on the fourth guide rail. The fourth slider is installed on the fourth lead screw. The rotation of the fourth lead screw can drive the fourth slider to slide along the fourth guide rail. The fourth driving motor is installed on the fourth guide rail, and the output shaft of the fourth driving motor is fixedly connected to the fourth lead screw. The fifth guide rail is fixedly arranged vertically on the fourth slider. The fifth lead screw is installed on the fifth guide rail. The fifth slider is installed on the fifth lead screw. The rotation of the fifth lead screw can drive the fifth slider to slide along the fifth guide rail. The fifth driving motor is installed on the fifth guide rail, and the output shaft of the fifth driving motor is fixedly connected to the fifth lead screw. The cylinder block of the fifth clamping cylinder is fixedly arranged on the fifth slider. The material receiving claw is installed on the fifth clamping cylinder and can be driven by the fifth clamping cylinder to perform closing or opening actions.

[0014] Further: The glue cylinder driving mechanism includes a sixth driving motor, a sixth slider, a sixth lead screw, and a sixth guide rail. The sixth guide rail is fixedly arranged on the frame. The sixth lead screw is installed on the sixth guide rail. The sixth slider is installed on the sixth lead screw. The rotation of the sixth lead screw can drive the sixth slider to slide along the sixth guide rail. The sixth driving motor is installed on the sixth guide rail, and the output shaft of the sixth driving motor is fixedly connected to the sixth lead screw. The dispensing cylinder is fixedly installed on the sixth slider.

[0015] The beneficial effects of the present invention are as follows. The step-by-step dispensing device for a thermal protector of the present invention moves and picks and places workpieces between the material taking claws, the positioning mechanism, the dispensing mechanism and the material receiving mechanism, and the dispensing mechanism dispenses glue on the workpieces, realizing the automatic production of thermal protector dispensing, ensuring the quality of products; and by setting multiple dispensing stations, the outer ring, pin positions and back of the pins of the workpieces are simultaneously dispensed, shortening the dispensing cycle of the workpieces, improving production efficiency and reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below with reference to the drawings and embodiments.

[0017] Figure 1 is a schematic structural diagram of a step-by-step dispensing device for a thermal protector of the present invention;

[0018] Figure 2 is a schematic structural diagram of the positioning mechanism;

[0019] Figure 3 is a schematic structural diagram of the first station;

[0020] Figure 4 is a schematic structural diagram of the second station;

[0021] Figure 5 and Figure 6 is a schematic structural diagram of the third station;

[0022] Figure 7 and Figure 8 is a schematic structural diagram of the transfer mechanism;

[0023] Figure 9 is an installation schematic diagram of the material taking claw;

[0024] Figure 10 is a schematic structural diagram of the first station, the second station, the third station and the transfer table arranged in a straight line;

[0025] Figure 11 and Figure 12 is a schematic structural diagram of the material receiving mechanism;

[0026] Figure 13 is a schematic structural diagram of the transfer table;

[0027] Figure 14 is an installation schematic diagram of the material receiving claw;

[0028] Figure 15 is a schematic structural diagram of the glue cylinder driving mechanism.

[0029] In the figure, 1 is the feeding rail, 2 is the tray, 3 is the workpiece, 4 is the dispensing cylinder, 5 is the material taking claw, 10 is the first cylinder, 11 is the first slider, 12 is the first guide rail, 13 is the positioning groove, 20 is the first driving motor, 21 is the vacuum chuck, 22 is the driven gear, 23 is the driving gear, 30 is the first rotary cylinder, 31 is the first clamping cylinder, 32 is the first positioning claw, 40 is the second rotary motor, 41 is the second clamping motor, 42 is the third rotary cylinder, 43 is the second positioning claw, 50 is the second linear motor, 51 is the second guide rail, 52 is the bracket, 53 is the second cylinder, 54 is the third cylinder, 55 is the mounting rack, 56 is the third clamping cylinder, 60 is the transfer table, 61 is the fourth clamping cylinder, 62 is the third positioning claw, 63 is the material receiving claw, 64 is the fifth clamping cylinder, 65 is the third driving motor, 66 is the third guide rail, 67 is the third lead screw, 68 is the fourth driving motor, 69 is the fourth guide rail, 610 is the fourth lead screw, 611 is the fifth driving motor, 612 is the fifth guide rail, 613 is the fifth slider, 70 is the sixth driving motor, 71 is the sixth slider, 72 is the sixth guide rail. Detailed implementation mode

[0030] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation of the present invention. On the contrary, the embodiments of the present invention include all variations, modifications, and equivalents that fall within the spirit and scope of the appended claims.

[0031] In the description of the present invention, 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", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0032] In addition, terms such as "first", "second", etc. are for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "connected" and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. In addition, in the description of the present invention, unless otherwise stated, the meaning of "a plurality of" is two or more.

[0033] Any process or method description shown in a flowchart or described otherwise herein can be understood to represent a module, segment, or portion of code including one or more executable instructions for implementing a specific logical function or process. The scope of the preferred embodiments of the present invention includes additional implementations, where functions can be executed in a substantially simultaneous manner or in a reverse order according to the involved functions, rather than in the order shown or discussed, which should be understood by those skilled in the art to which the embodiments of the present invention pertain.

[0034] As Figure 1 As shown, the present invention provides a step-by-step dispensing device for a thermal protector, including a feeding rail 1 and a tray 2. Workpieces 3 to be dispensed are arranged on the feeding rail 1; the tray is used to place the workpieces 3 with dispensed glue. The device further includes a dispensing mechanism, a positioning mechanism, a collecting mechanism, a picking claw 5, and a transfer mechanism disposed on a frame. The positioning mechanism is used to position the workpieces 3; the dispensing mechanism is used to perform a dispensing operation on the workpieces 3; the collecting mechanism is used to place the workpieces 3 with dispensed glue into the tray; the picking claw 5 is mounted on the frame through the transfer mechanism, and the transfer mechanism can drive the picking claw 5 to move between the positioning mechanism, the dispensing mechanism, and the collecting mechanism.

[0035] During operation, the positioning mechanism moves the workpiece 3 on the feeding rail 1 to the movement range of the picking claw 5 and positions it. The picking claw 5 grabs the workpiece 3 and moves it to the dispensing mechanism for a dispensing operation under the drive of the transfer mechanism. After the dispensing is completed, the workpiece 3 is moved to the collecting mechanism, and the collecting mechanism arranges the workpieces 3 with dispensed glue into the tray.

[0036] Combined with Figure 2As shown in the figure, the positioning mechanism includes a positioning block, a first cylinder 10, a first slider 11, and a first guide rail 12. A positioning groove 13 is provided on the positioning block. The workpiece 3 on the feeding rail 1 can slide into the positioning groove 13 and fit inside the positioning groove 13. The first guide rail 12 is arranged horizontally on the frame. The positioning block is fixedly installed on the first slider 11. The first slider 11 is slidably arranged on the first guide rail 12. The cylinder block of the first cylinder 10 is fixedly arranged on the frame. The piston rod of the first cylinder 10 is fixedly connected to the first slider 11 and is arranged parallel to the first guide rail 12. The first slider 11 is driven to move by the first cylinder 10 to drive the positioning block to move. When the positioning groove 13 on the positioning block moves to the discharge port of the feeding rail 1, the workpiece 3 slides into the positioning groove 13. Then the positioning block moves into the moving range of the picking claw 5, and the picking claw 5 picks up the workpiece 3. The setting of the positioning groove can ensure the position repeatability of the workpiece 3 and prevent the workpiece 3 from moving around and affecting the grasping of the picking claw 5.

[0037] The dispensing mechanism includes a first station, a second station, and a third station. The first station can perform dispensing operations on the outer ring of the workpiece 3; the second station can perform dispensing operations on the pin positions of the workpiece 3; the third station can perform dispensing operations on the back of the pins of the workpiece 3. The first station, the second station, and the third station are all provided with dispensing cylinders 4. The dispensing cylinders 4 are movably installed on the frame through a cylinder driving mechanism. The cylinder driving mechanism can drive the dispensing cylinders 4 to move and align the nozzles of the dispensing cylinders 4 with the dispensing points of the workpiece 3.

[0038] Combined with Figure 3 As shown in the figure, the first station includes a first driving motor 20, a vacuum chuck 21, and a connecting shaft. The connecting shaft is rotatably installed on the frame in the vertical direction. The upper end of the connecting shaft is fixedly connected to the vacuum chuck 21. The rotation of the connecting shaft can drive the vacuum chuck 21 to rotate. A driven gear 22 is fixedly installed in the middle of the connecting shaft. The first driving motor 20 is fixedly installed on the frame. A driving gear 23 is installed on the output shaft of the first driving motor 20. The driven gear 22 and the driving gear 23 are meshed.

[0039] Combined with Figure 4 As shown in the figure, the second station includes a first rotary cylinder 30, a first clamping cylinder 31, and a first positioning claw 32. The cylinder block of the first rotary cylinder 30 is fixedly installed on the frame. The rotation center of the first rotary cylinder 30 is arranged in the vertical direction. The cylinder block of the first clamping cylinder 31 is fixedly arranged on the rotor of the first rotary cylinder 30. The first positioning claw 32 can perform closing or opening actions under the drive of the first clamping cylinder 31.

[0040] Combined Figure 5 and Figure 6 As shown, the third station includes a second rotary cylinder 40, a second clamping cylinder 41, a third rotary cylinder 42 and a second positioning claw 43. The cylinder block of the third rotary cylinder 42 is fixedly installed on the frame. The rotation center of the third rotary cylinder 42 is arranged in the horizontal direction. The cylinder block of the second rotary cylinder 40 is fixedly arranged on the rotor of the third rotary cylinder 42. The rotation center of the second rotary cylinder 40 is perpendicular to the rotation center of the third rotary cylinder 42. The cylinder block of the second clamping cylinder 41 is fixedly arranged on the rotor of the second rotary cylinder 40. The second positioning claw 43 can perform closing or opening actions under the drive of the second clamping cylinder 41.

[0041] Rotary cylinders are cheaper than drive motors. The rotor of a rotary cylinder can perform reciprocating rotary motion within a certain angle range, and the rotational adjustment repeatability is high. Replacing the drive motor with a rotary cylinder can save production costs. The material taking claw 5 moves the workpiece 3 to the vacuum chuck 21 at the first station. The vacuum chuck 21 adsorbs the workpiece 3. The first drive motor 20 rotates to drive the workpiece 3 on the vacuum chuck 21 to rotate 360 degrees. At the same time, the glue cylinder drive mechanism drives the glue cylinder 4 to move, and the glue cylinder 4 performs 360-degree glue dispensing operation on the outer ring glue dispensing points of the workpiece 3.

[0042] The material taking claw 5 moves the workpiece 3 from the first station to the second station. A thermal protector generally has two pins. The first clamping cylinder 31 drives the first positioning claw 32 to close and clamp the workpiece 3. The glue cylinder 4 performs glue dispensing on the glue dispensing points of the first pin of the workpiece 3. After completion, the first rotary cylinder 30 drives the first clamping cylinder 31 to rotate, so that the glue dispensing points of the second pin of the workpiece 3 move to the nozzle position of the glue cylinder 4 for glue dispensing operation.

[0043] The material taking claw 5 moves the workpiece 3 from the second station to the third station. The glue dispensing points on the back of the pins of the workpiece are not in the same plane. The rotation center of the second rotary electric cylinder 40 is arranged in the vertical plane direction to facilitate the material taking claw 5 to move the workpiece 3 to the second positioning claw 43 of the second clamping cylinder 41. The second positioning claw 43 clamps the workpiece 3. The third rotary cylinder 42 drives the second rotary cylinder 40 to rotate, so that the rotation center of the second rotary cylinder 40 is in the horizontal direction. The glue cylinder 4 performs glue dispensing on the glue dispensing points on the back of the first pin, and then the second rotary cylinder 40 drives the second clamping cylinder 41 to rotate, so that the glue dispensing points on the back of the second pin of the workpiece 3 rotate to the nozzle position of the glue cylinder 4.

[0044] Combined Figure 7 、 Figure 8 and Figure 9As shown in the figure, the transfer mechanism includes a second linear motor 50, a second guide rail 51, a bracket 52, a second cylinder 53, and a third cylinder 54. The second guide rail 51 is arranged horizontally. The second linear motor 50 is arranged on the second guide rail 51 and can move horizontally along the second guide rail 51. The bracket 52 is fixedly arranged on the mover seat of the second linear motor 50. The cylinder block of the second cylinder 53 is fixedly arranged on the bracket 52. The piston rod of the second cylinder 53 is arranged vertically upward. An installation plate is fixedly arranged on the piston rod of the second cylinder 53. The cylinder block of the third cylinder 54 is fixedly installed on the installation plate. The piston rod of the third cylinder 54 is arranged horizontally and is perpendicular to the second guide rail 51. An installation frame 55 is fixedly arranged on the piston rod of the third cylinder 54. A third clamping cylinder 56 is arranged on the installation frame 55. The material taking claw 5 is installed on the third clamping cylinder 56 and can perform closing or opening actions under the drive of the third clamping cylinder 56.

[0045] The second linear motor 50 can drive the material taking claw 5 to move horizontally; the second cylinder 53 can drive the material taking claw 5 to move vertically; the third cylinder 54 can drive the material taking claw 5 to move longitudinally, so that the material taking claw 5 can move precisely between each working position. This driving method has high movement repeatability and can realize automatic control.

[0046] The number of the third clamping cylinders 56 and the material taking claws 5 is four each. The four material taking claws 5 are respectively a first material taking claw, a second material taking claw, a third material taking claw, and a fourth material taking claw. The first material taking claw can grab the workpiece 3 on the positioning mechanism to the first working position; the second material taking claw can grab the workpiece 3 on the first working position to the second working position; the third material taking claw can grab the workpiece 3 on the second working position to the third working position; the fourth material taking claw can grab the workpiece 3 on the third working position to the material receiving mechanism. By arranging four material taking claws 5 and three dispensing working positions, the working positions can work synchronously, reducing the waiting time for workpiece 3 transportation between the working positions and improving the production efficiency.

[0047] Combined with Figure 10 、 Figure 11 、 Figure 12 and Figure 13As shown, the material receiving mechanism includes a transfer table 60, a fourth clamping cylinder 61 and a third positioning claw 62. The transfer table 60 is fixedly installed on the frame. The first station, the second station, the third station and the transfer table are arranged in a straight line. The cylinder block of the fourth clamping cylinder 61 is fixedly installed on the transfer table 60. The third positioning claw 62 is installed on the fourth clamping cylinder 61 and can be driven by the fourth clamping cylinder 61 to perform closing or opening actions. The material receiving mechanism further includes a material receiving claw 63, a fifth clamping cylinder 64, a third driving motor 65, a third guide rail 66, a third lead screw 67, a third slider, a fourth driving motor 68, a fourth guide rail 69, a fourth lead screw 610, a fourth slider, a fifth driving motor 611, a fifth guide rail 612, a fifth lead screw and a fifth slider 613.

[0048] The third guide rail 66 is arranged on the frame in the horizontal direction. The third lead screw 67 is installed on the third guide rail 66. The third slider is installed on the third lead screw 67. The rotation of the third lead screw 67 can drive the third slider to slide along the third guide rail 66. The third driving motor 65 is installed on the third guide rail 66. The output shaft of the third driving motor 65 is fixedly connected to the third lead screw 67.

[0049] The fourth guide rail 69 is fixedly arranged on the third slider in the horizontal direction and is perpendicular to the third guide rail 66. The fourth lead screw 610 is installed on the fourth guide rail 69. The fourth slider is installed on the fourth lead screw 610. The rotation of the fourth lead screw 610 can drive the fourth slider to slide along the fourth guide rail 69. The fourth driving motor 68 is installed on the fourth guide rail 69. The output shaft of the fourth driving motor 68 is fixedly connected to the fourth lead screw 610.

[0050] The fifth guide rail 612 is fixedly arranged on the fourth slider in the vertical direction. The fifth lead screw is installed on the fifth guide rail 612. The fifth slider 613 is installed on the fifth lead screw. The rotation of the fifth lead screw can drive the fifth slider 613 to slide along the fifth guide rail 612. The fifth driving motor 611 is installed on the fifth guide rail 612. The output shaft of the fifth driving motor 611 is fixedly connected to the fifth lead screw.

[0051] Combined Figure 14 As shown, the cylinder block of the fifth clamping cylinder 64 is fixedly arranged on the fifth slider 613. The material receiving claw 63 is installed on the fifth clamping cylinder 64 and can be driven by the fifth clamping cylinder 64 to perform closing or opening actions.

[0052] Due to the limitations of the movement trajectory of the material taking claw 5, by arranging the transfer table 60 collinearly with the three dispensing stations, it is convenient for the four material taking claws 5 to work synchronously. The workpiece with glue applied at the third station can be temporarily placed on the transfer table 60, and then clamped into the material box 2 by the material receiving claw 63. The driving mode of the guide rail, slider and lead screw has a simple structure. When driven by a servo motor, high-precision control can be carried out to achieve precise displacement operation of the material receiving claw 63 and realize automated production.

[0053] Combined with Figure 15 As shown, the glue cylinder driving mechanism includes a sixth driving motor 70, a sixth slider 71, a sixth lead screw and a sixth guide rail 72. The sixth guide rail 72 is fixedly arranged on the frame. The sixth lead screw is installed on the sixth guide rail 72. The sixth slider 71 is installed on the sixth lead screw. The rotation of the sixth lead screw can drive the sixth slider 71 to slide along the sixth guide rail 72. The sixth driving motor 70 is installed on the sixth guide rail 72. The output shaft of the sixth driving motor 70 is fixedly connected to the sixth lead screw. The dispensing cylinder 4 is fixedly installed on the sixth slider 71. By the cooperation of the driving motor, lead screw and slider, the position of the dispensing cylinder 4 can be precisely adjusted to drive the dispensing cylinder 4 to perform dispensing work on the dispensing point. And when the workpiece 3 is loaded and unloaded, the dispensing cylinder 4 can be driven away from the workpiece 3 to avoid the dispensing cylinder 4 interfering with the material taking claw 5.

[0054] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0055] Taking the above ideal embodiment of the present invention as an inspiration, through the above description, relevant staff can completely make various changes and modifications without departing from the technical idea of this invention. The technical scope of this invention is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A step-by-step dispensing device for a thermal protector, comprising a feeding rail (1) and a tray (2), with workpieces (3) to be dispensed arranged on the feeding rail (1); the tray (2) is used for placing the workpieces (3) with dispensed glue, and is characterized in that: It also includes a glue dispensing mechanism, a positioning mechanism, a material receiving mechanism, a material taking claw (5) and a transfer mechanism arranged on the frame. The positioning mechanism is used to position the workpiece (3); The glue dispensing mechanism is used to perform a glue dispensing operation on the workpiece (3); The material receiving mechanism is used to place the glued workpiece (3) into the material tray (2); The material picking claw (5) is mounted on the frame via the transfer mechanism, and the transfer mechanism is capable of driving the material picking claw (5) to move between the positioning mechanism, the glue dispensing mechanism and the material receiving mechanism; The positioning mechanism comprises a positioning block, a first cylinder (10), a first slider (11) and a first guide rail (12); the positioning block is provided with a positioning groove (13); the workpiece (3) on the feed rail (1) can slide into the positioning groove (13) and fit into the positioning groove (13); the first guide rail (12) is arranged on the frame in a horizontal direction; the positioning block is fixedly mounted on the first slider (11); the first slider (11) is slidably arranged on the first guide rail (12); the cylinder body of the first cylinder (10) is fixedly arranged on the frame; the piston rod of the first cylinder (10) is fixedly connected to the first slider (11) and is arranged parallel to the first guide rail (12); The dispensing mechanism includes a first station, a second station and a third station. The first station is capable of performing a glue dispensing operation on the outer ring of the workpiece (3); The second workstation is capable of performing a glue dispensing operation on the pin position of the workpiece (3); The third workstation is capable of performing a glue dispensing operation on the back of the pins of the workpiece (3); The first station, the second station and the third station are all provided with a glue dispensing cylinder (4), and the glue dispensing cylinder (4) is movably mounted on the frame via a glue cylinder driving mechanism, and the glue cylinder driving mechanism can drive the glue dispensing cylinder (4) to move and align the nozzle of the glue dispensing cylinder (4) with the glue application point of the workpiece (3).

2. The step-by-step dispensing device for a thermal protector according to claim 1, wherein: The first workstation comprises a first drive motor (20), a vacuum suction cup (21) and a connecting shaft, wherein the connecting shaft is rotatably mounted on the frame in a vertical direction, the upper end of the connecting shaft is fixedly connected to the vacuum suction cup (21), the rotation of the connecting shaft can drive the vacuum suction cup (21) to rotate, and a driven gear (22) is fixedly mounted on the middle part of the connecting shaft; the first drive motor (20) is fixedly mounted on the frame, a drive gear (23) is mounted on the output shaft of the first drive motor (20), and the driven gear (22) is meshed with the drive gear (23).

3. The step-by-step dispensing device for a thermal protector according to claim 1, characterized in that: The second station includes a first rotary cylinder (30), a first clamping cylinder (31) and a first positioning claw (32). The cylinder block of the first rotary cylinder (30) is fixedly installed on the frame. The rotation center of the first rotary cylinder (30) is arranged in the vertical direction. The cylinder block of the first clamping cylinder (31) is fixedly arranged on the rotor of the first rotary cylinder (30). The first positioning claw (32) is installed on the first clamping cylinder (31) and can perform a closing or opening action under the drive of the first clamping cylinder (31).

4. The step-by-step dispensing device for a thermal protector according to claim 1, wherein: The third station includes a second rotary cylinder (40), a second clamping cylinder (41), a third rotary cylinder (42) and a second positioning claw (43). The cylinder block of the third rotary cylinder (42) is fixedly installed on the frame. The rotation center of the third rotary cylinder (42) is arranged in the horizontal direction. The cylinder block of the second rotary cylinder (40) is fixedly arranged on the rotor of the third rotary cylinder (42). The rotation center of the second rotary cylinder (40) is perpendicular to the rotation center of the third rotary cylinder (42). The cylinder block of the second clamping cylinder (41) is fixedly arranged on the rotor of the second rotary cylinder (40). The second positioning claw (43) is installed on the second clamping cylinder (41) and can perform a closing or opening action under the drive of the second clamping cylinder (41).

5. The step-by-step dispensing device for a thermal protector according to claim 1, characterized in that: The transfer mechanism includes a second linear motor (50), a second guide rail (51), a bracket (52), a second cylinder (53), and a third cylinder (54). The second guide rail (51) is arranged in the horizontal direction. The second linear motor (50) is arranged on the second guide rail (51) and can move horizontally along the second guide rail (51). The bracket (52) is fixedly arranged on the mover seat of the second linear motor (50). The cylinder block of the second cylinder (53) is fixedly arranged on the bracket (52). The piston rod of the second cylinder (53) is arranged vertically upward. An installation plate is fixedly arranged on the piston rod of the second cylinder (53). The cylinder block of the third cylinder (54) is fixedly installed on the installation plate. The piston rod of the third cylinder (54) is arranged in the horizontal direction and is perpendicular to the second guide rail (51). An installation frame (55) is fixedly arranged on the piston rod of the third cylinder (54); A third clamping cylinder (56) is arranged on the installation frame (55). The material taking claw (5) is installed on the third clamping cylinder (56) and can perform a closing or opening action under the drive of the third clamping cylinder (56).

6. The step-by-step dispensing device for a thermal protector according to claim 5, wherein: The number of the third clamping cylinders (56) and the material taking claws (5) is four. The four material taking claws (5) are respectively a first material taking claw, a second material taking claw, a third material taking claw and a fourth material taking claw. The first material taking claw can grab the workpiece (3) on the positioning mechanism to the first station; The second material taking claw can grab the workpiece (3) on the first station to the second station; The third workpiece gripper can grasp the workpiece (3) on the second station to the third station; The fourth workpiece gripper can grasp the workpiece (3) on the third station to the material receiving mechanism.

7. The step-by-step dispensing device for a thermal protector according to claim 1, characterized in that: The material receiving mechanism includes a transfer table (60), a fourth clamping cylinder (61) and a third positioning claw (62). The transfer table (60) is fixedly installed on the frame. The first station, the second station, the third station and the transfer table are arranged in a straight line. The cylinder block of the fourth clamping cylinder (61) is fixedly installed on the transfer table (60). The third positioning claw (62) is installed on the fourth clamping cylinder (61) and can perform a closing or opening action under the drive of the fourth clamping cylinder (61); The material receiving mechanism further includes a material receiving claw (63), a fifth clamping cylinder (64), a third driving motor (65), a third guide rail (66), a third lead screw (67), a third slider, a fourth driving motor (68), a fourth guide rail (69), a fourth lead screw (610), a fourth slider, a fifth driving motor (611), a fifth guide rail (612), a fifth lead screw and a fifth slider (613), The third guide rail (66) is arranged horizontally on the frame. The third lead screw (67) is installed on the third guide rail (66). The third slider is installed on the third lead screw (67). The rotation of the third lead screw (67) can drive the third slider to slide along the third guide rail (66). The third driving motor (65) is installed on the third guide rail (66). The output shaft of the third driving motor (65) is fixedly connected to the third lead screw (67); The fourth guide rail (69) is fixedly arranged horizontally on the third slider and is perpendicular to the third guide rail (66). The fourth lead screw (610) is installed on the fourth guide rail (69). The fourth slider is installed on the fourth lead screw (610). The rotation of the fourth lead screw (610) can drive the fourth slider to slide along the fourth guide rail (69). The fourth driving motor (68) is installed on the fourth guide rail (69). The output shaft of the fourth driving motor (68) is fixedly connected to the fourth lead screw (610); The fifth guide rail (612) is fixedly arranged vertically on the fourth slider. The fifth lead screw is installed on the fifth guide rail (612). The fifth slider (613) is installed on the fifth lead screw. The rotation of the fifth lead screw can drive the fifth slider (613) to slide along the fifth guide rail (612). The fifth driving motor (611) is installed on the fifth guide rail (612). The output shaft of the fifth driving motor (611) is fixedly connected to the fifth lead screw; The cylinder block of the fifth clamping cylinder (64) is fixedly arranged on the fifth slider (613). The material receiving claw (63) is installed on the fifth clamping cylinder (64) and can perform a closing or opening action under the drive of the fifth clamping cylinder (64).

8. The step-by-step dispensing device for a thermal protector according to claim 1, wherein: The cartridge driving mechanism includes a sixth driving motor (70), a sixth slider (71), a sixth lead screw, and a sixth guide rail (72). The sixth guide rail (72) is fixedly arranged on the frame. The sixth lead screw is installed on the sixth guide rail (72). The sixth slider (71) is installed on the sixth lead screw. Rotation of the sixth lead screw can drive the sixth slider (71) to slide along the sixth guide rail (72). The sixth driving motor (70) is installed on the sixth guide rail (72), and an output shaft of the sixth driving motor (70) is fixedly connected to the sixth lead screw. The dispensing cartridge (4) is fixedly installed on the sixth slider (71).

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