High-precision dispensing equipment

Abstract

The application discloses a high-precision dispensing equipment, comprising: a base, a heating unit, a dispensing unit, a driving part and a calibration unit; the base is provided with a conveying unit, a product is located on the conveying unit, and the conveying unit is used for transporting the product; the heating unit is arranged on the base; the heating unit comprises a plurality of detection parts which are arranged at intervals; the driving part is arranged on the base; the dispensing unit is located on the output end of the driving part; the driving part is used for controlling the dispensing unit to move in the X, Y and Z directions above the heating unit; the driving part is provided with a position detection unit, which is used for controlling the precision of the displacement of the dispensing unit driven by the driving part; and the calibration unit is located on one side of the heating unit and comprises a glue amount calibration part and a position calibration part. The application has the advantages of high precision of dispensing position and dispensing amount.

Description

Technical Field

[0001] This invention belongs to the field of dispensing equipment technology, and specifically relates to a high-precision dispensing equipment. Background Technology

[0002] Adhesive dispensing serves to bond, seal, and connect. Compared to manual dispensing, automated dispensing equipment significantly improves dispensing speed, uniformity, and accuracy, making it popular across various industries. The product, driven by the transmission unit, reaches the corresponding heating unit. The heating unit heats the product to increase the flowability of the adhesive, resulting in more uniform application. Various dispensing pens are used to apply adhesive to different needs. However, the uniformity of product heating and the accuracy of the dispensing pen's position both affect the yield rate. When dispensing larger products, the large size makes temperature control difficult, and the long stroke of the dispensing pen can cause significant errors. To meet customer needs and improve dispensing accuracy and uniformity, a high-precision dispensing device is proposed. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art.

[0004] Therefore, this invention proposes a high-precision dispensing device, which has the advantages of high accuracy in dispensing position and dispensing amount.

[0005] A high-precision dispensing device according to an embodiment of the present invention includes: a base, a heating unit, a dispensing unit, a driving unit, and a calibration unit; a conveying unit is provided on the base, and a product is located on the conveying unit, which is used to transport the product; the heating unit is located on the base and includes multiple detection units, which are spaced apart and used to detect the heating temperature of each area of ​​the heating unit; the dispensing unit is used to dispense glue onto the product on the heating unit; the driving unit is located on the base and the dispensing unit is located at the output end of the driving unit; the driving unit is used to control the dispensing unit to move above the heating unit along the X, Y, and Z directions; the driving unit is provided with a position detection unit to control the accuracy of the driving unit in moving the dispensing unit; the calibration unit is located on one side of the heating unit and includes a glue volume calibration unit and a position calibration unit; the glue volume calibration unit is used to calibrate the dispensing volume of the dispensing unit, and the position calibration unit is used to calibrate the dispensing position of the dispensing unit.

[0006] According to one embodiment of the present invention, the heating unit includes: a lifting part and a heating plate; the lifting part is disposed on a base, and an upper support plate is provided on the output end of the lifting part; the heating plate is connected to the upper support plate; the lifting part is used to drive the heating plate to perform linear reciprocating motion; the upper support plate is used to support the heating plate; and a plurality of detection parts are spaced apart inside the heating plate for detecting the heating temperature of each area of ​​the heating plate.

[0007] According to one embodiment of the present invention, the heating unit further includes a plurality of adjustment parts disposed between the upper support plate and the heating plate, the plurality of adjustment parts being distributed in multiple positions of the heating plate to adjust the levelness of the heating plate.

[0008] According to one embodiment of the present invention, the adjusting part includes: a support leg and a set screw; the support leg is disposed on an upper support plate, and the support leg is bolted to a heating plate; the set screw is disposed on the heating plate, and both ends of the set screw pass through the heating plate; one end of the set screw is disposed opposite to the support leg; the set screw is used to adjust the distance between the heating plate and the support leg.

[0009] According to one embodiment of the present invention, a heat insulation plate is provided between the heating plate and the upper support plate, and the heat insulation plate is used to reduce the heat transfer of the heating plate to the lifting part.

[0010] According to one embodiment of the present invention, the heating plate includes: a housing and a plurality of heating rods; the plurality of heating rods are arranged at intervals inside the housing.

[0011] According to one embodiment of the present invention, the lifting part includes: a first cylinder and a guide unit; the fixed end of the first cylinder is connected to the base, the output end of the first cylinder is connected to the center position of the upper support plate, and the guide unit is disposed on the base to guide the movement of the upper support plate.

[0012] According to one embodiment of the present invention, the guide unit includes a linear bearing and a guide shaft, one end of the guide shaft is slidably connected inside the linear bearing, the other end of the guide shaft is connected to an upper support plate, and the linear bearing is connected to a base.

[0013] According to one embodiment of the present invention, a back plate is provided on the output end of the driving unit, the driving unit is used to drive the back plate to move, a positioning plate is provided on one side of the back plate, a positioning surface is provided on one side of the positioning plate, and the positioning surface forms an angle with one side of the back plate; the dispensing unit includes: a fixing part, the fixing part is used to fix the dispensing pen, the fixing part includes a connecting plate, one side of the connecting plate is attached to one side of the back plate, and the other side of the connecting plate is attached to the positioning surface, so as to facilitate positioning of the installation position of the fixing part, the connecting plate and the positioning plate are connected by bolts to facilitate disassembly and assembly of the fixing part.

[0014] According to one embodiment of the present invention, the dispensing unit further includes a vision module, which is arranged side by side with the fixing part, and the vision module is used to determine the dispensing position.

[0015] According to one embodiment of the present invention, the fixing part includes: a clamping assembly, a positioning block, and a liquid level sensor; the clamping assembly is used to clamp one end of the dispensing pen, the clamping assembly is disposed on a connecting plate, the clamping assembly is disposed opposite to the back plate, the positioning block is located on the same side of the connecting plate as the clamping assembly, the positioning block is provided with a connecting hole, the connecting hole passes through the positioning block, for connecting the other end of the dispensing pen, and the liquid level sensor is used to detect the amount of glue in the dispensing pen.

[0016] According to one embodiment of the present invention, the glue volume calibration unit includes: a cleaning component, a weighing component, and a plurality of glue cups; the cleaning component is used to clean the tip of the dispensing pen, the weighing component is used to measure the dispensing volume, and the glue cups are used to collect the waste glue discharged by the dispensing pen, and the plurality of glue cups are respectively distributed on one side of the cleaning component and the weighing component.

[0017] According to one embodiment of the present invention, the cleaning component includes: a vacuum cleaning module, a lint-free cloth adhesive wiping module, and a high-adaptability cleaning module; the vacuum cleaning module is used for preliminary cleaning of residual adhesive on the tip of the dispensing pen, the lint-free cloth adhesive wiping module is used for cleaning the tip of non-pointed dispensing pens, and the high-adaptability cleaning module is used for cleaning the tip of all types of dispensing pens.

[0018] The beneficial effects of this invention are as follows: This invention employs multiple detection units to detect the temperature of each area of ​​the heating unit, thereby controlling the heat in each area and improving the uniformity of heating the product. This results in more stable flowability of the adhesive during the dispensing process. The adhesive quantity calibration unit detects and calibrates the adhesive quantity before dispensing, making the dispensing quantity more accurate. The position calibration unit confirms the dispensing position before dispensing, making the stroke calculation more accurate during subsequent dispensing operations and improving the precision of the dispensing position. The position detection unit determines the initial position of the crossbeam movement, achieving precise measurement of the dispensing unit's movement distance. Therefore, it reduces stroke errors caused by large products, improves the precision of the dispensing position, reduces defects in the finished product caused by adhesive quantity or position errors, and increases the yield rate of the dispensing product.

[0019] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention.

[0020] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0021] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0022] Figure 1 This is a left-side view of the overall structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the enlarged structure of region A of the present invention;

[0024] Figure 3 This is a schematic diagram of the enlarged structure of region A of the present invention;

[0025] Figure 4 This is a left-side view of the overall structure of the present invention;

[0026] Figure 5 This is a schematic diagram showing the positional relationship between the pressure plate and the heating unit of the present invention;

[0027] Figure 6 This is a schematic diagram of the connection between the slide and the guide groove of the present invention;

[0028] Figure 7 This is a schematic diagram of the overall structure of the heating unit of the present invention;

[0029] Figure 8 This is a schematic diagram showing the position of the heating rod after the housing of the heating unit of the present invention has been removed;

[0030] Figure 9 This is a bottom view schematic diagram of the heating unit of the present invention;

[0031] Figure 10 This is an enlarged schematic diagram of region C of the present invention;

[0032] Figure 11 This is a schematic diagram of the connection between the first retaining ring and the second retaining ring of the present invention;

[0033] Figure 12 This is a schematic diagram of the position of the U-shaped clamping block of the present invention;

[0034] Figure 13 This is a schematic diagram of the installation position of the vision module of the present invention;

[0035] Figure label:

[0036] 1. Base; 11. Conveying unit; 12. Side plate; 121. Pressure plate; 122. Slide rail; 123. Guide groove; 131. First limiting unit; 1311. First limiting plate; 1312. Square groove; 1313. First limiting block; 132. Second limiting unit; 1321. Support base; 1322. Buffer block; 1323. Second limiting block; 2. Heating unit; 211. Upper support plate; 212. First cylinder; 213. Guide unit 2131, Linear bearing; 2132, Guide shaft; 22, Heating plate; 222, Heating rod; 223, Heat insulation plate; 23, Adjustment part; 231, Support leg; 232, Set screw; 24, Detection part; 3, Dispensing unit; 31, Fixing part; 311, Connecting plate; 312, Clamping assembly; 3121, First retaining ring; 3122, First groove; 3123, Second retaining ring; 3124, Second groove; 313, Positioning block; 313 1. Fastening screw; 314. Liquid level sensor; 32. Vision module; 321. Camera; 322. Displacement sensor; 323. Light source; 336. Connecting hole; 337. U-shaped clamp; 4. Drive unit; 41. Back plate; 411. Positioning plate; 42. First linear guide rail; 43. Second linear guide rail; 44. First linear motor; 45. Crossbeam; 451. Third limit block; 46. Second linear motor; 47. Mounting plate; 48. Lead screw Motor module; 491, First photoelectric sensor; 492, First trigger plate; 493, Grating ruler; 494, Reading head; 5, Calibration unit; 5111, High-adaptability cleaning module; 5112, Dust-free cloth adhesive wiping module; 5113, Vacuum cleaning module; 512, Glue cup; 513, Weighing assembly; 521, Ceramic plate; 522, Tool setter; 71, Second photoelectric sensor; 72, Second trigger plate; 81, Baffle; 82, Second cylinder. Detailed Implementation

[0037] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0038] In the description of this 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," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0039] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0040] The high-precision dispensing equipment according to embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0041] like Figure 1-13 As shown, the high-precision dispensing equipment according to an embodiment of the present invention includes: a base 1, a heating unit 2, a dispensing unit 3, a driving unit 4, and a calibration unit 5; a conveying unit 11 is provided on the base 1, and the product is located on the conveying unit 11. The conveying unit 11 is used to transport the product. The heating unit 2 is provided on the base 1 and includes a plurality of detection units 24, which are spaced apart and used to detect the heating temperature of each area of ​​the heating unit 2. The dispensing unit 3 is used to dispense glue onto the product on the heating unit 2. The driving unit 4 is provided on the base 1, and the dispensing unit 3 is located on the output end of the driving unit 4. The driving unit 4 is used to control the dispensing unit 3 to move above the heating unit 2 along the X, Y, and Z directions. The driving unit 4 is provided with a position detection unit to control the accuracy of the displacement of the dispensing unit 3 driven by the driving unit 4. The calibration unit 5 is located on one side of the heating unit 2 and includes a glue quantity calibration unit and a position calibration unit. The glue quantity calibration unit is used to calibrate the dispensing quantity of the dispensing unit 3, and the position calibration unit is used to calibrate the dispensing position of the dispensing unit 3.

[0042] In this embodiment, multiple detection units 24 are used to detect the temperature of each area of ​​the heating unit 2, so as to control the heat of each area of ​​the heating unit 2, thereby improving the uniformity of heating the product by the heating unit 2, making the flow of the adhesive more stable during the dispensing process. The adhesive quantity calibration unit is used to detect and calibrate the adhesive quantity before the dispensing operation, so as to make the dispensing quantity more accurate. The position calibration unit is used to confirm the dispensing position before dispensing, so as to make the stroke calculation more accurate during the subsequent dispensing operation, improve the accuracy of the dispensing position, reduce the defects of the finished product caused by adhesive quantity error or position error, and improve the dispensing yield.

[0043] Support frames are provided on both sides above the base 1, and the drive unit 4 includes a Y-axis drive unit, an X-axis drive unit and a Z-axis drive unit;

[0044] The Y-axis drive unit includes a first linear motor 44 and three first linear guides 42; the three first linear guides 42 are respectively mounted on the upper and lower surfaces of one support frame and the upper surface of another support frame, and the first linear motor 44 is mounted on the side wall of one support frame.

[0045] The X-axis drive unit includes a crossbeam 45, two second linear guides 43, and a second linear motor 46. One end of the crossbeam 45 is fixedly connected to the mover of the first linear motor 44. The first linear motor 44 drives the crossbeam 45 to perform linear reciprocating motion along the Y-axis. The mover of the first linear motor 44 is slidably connected to two first linear guides 42 on a support frame. The two first linear guides 42 on the support frame guide the mover of the first linear motor 44. The other end of the crossbeam 45 is slidably connected to another support frame. On the first linear guide rail 42, three first linear guide rails 42 guide the movement of the crossbeam 45; two second linear guide rails 43 are respectively installed on the upper and lower surfaces of the crossbeam 45; the second linear motor 46 is installed on the side wall of the crossbeam 45; the moving part of the second linear motor 46 is slidably connected to the two second linear guide rails 43 to guide the moving part of the second linear motor 46; both ends of the crossbeam 45 are provided with third limit blocks 451; the two third limit blocks 451 are used to limit the movement distance of the screw motor module 48.

[0046] The Z-axis drive unit includes a mounting plate 47 and a lead screw motor module 48. The mounting plate 47 is fixedly connected to the mover of the second linear motor 46. The second linear motor 46 is used to drive the mounting plate 47 to reciprocate linearly along the X-axis. The lead screw motor module 48 is mounted on the mounting plate 47. The dispensing unit 3 is mounted on the output end of the lead screw motor module 48. The lead screw motor module 48 is used to drive the dispensing unit 3 to reciprocate linearly along the Z-axis.

[0047] The position detection unit includes two first photoelectric sensors 491, two first trigger plates 492, a grating ruler 493, and a reading head 494. The two first photoelectric sensors 491 are respectively mounted on a support frame, and the two first trigger plates 492 are each mounted on one end of the crossbeam 45. When the crossbeam 45 moves to the initial position, one first trigger plate 492 triggers one first photoelectric sensor 491. When the crossbeam 45 moves to the end position, the other first trigger plate 492 triggers the other first photoelectric sensor 491, so as to achieve precise repositioning and facilitate the calculation of the movement stroke of the crossbeam 45 during subsequent operations, making the subsequent calculation of the movement position of the crossbeam 45 more accurate. The grating ruler 493 is set on a support frame and is parallel to the first linear guide rail 42. The reading head 494 is mounted on one end of the crossbeam 45. During the movement of the crossbeam 45, the reading head 494 measures the movement distance of the crossbeam 45 through the grating ruler 493.

[0048] In summary, by using the first linear motor 44 and the second linear motor 46, the accuracy of driving the dispensing unit 3 is improved. The initial position of the crossbeam 45 is determined by the first photoelectric sensor 491 and the first trigger plate 492. The moving distance of the crossbeam 45 is accurately calculated by using the grating ruler 493 and the reading head 494. Therefore, the stroke error caused by the large size of the product is reduced and the accuracy of the dispensing position is improved.

[0049] The heating unit 2 includes a lifting section, a heating plate 22, and multiple adjusting sections 23. The lifting section is mounted on the base 1, and an upper support plate 211 is provided on the output end of the lifting section. The heating plate 22 is connected to the upper support plate 211. The lifting section is used to drive the heating plate 22 to perform linear reciprocating motion. The upper support plate 211 is used to support the heating plate 22. Multiple detection sections 24 are spaced apart inside the heating plate 22 to detect the heating temperature of each area of ​​the heating plate 22. The adjusting sections 23 are located between the upper support plate 211 and the heating plate 22. The multiple adjusting sections 23 are distributed in multiple positions of the heating plate 22 to adjust the levelness of the heating plate 22. A heat insulation plate 223 is provided between the heating plate 22 and the upper support plate 211 to reduce the heat transfer from the heating plate 22 to the lifting section, thereby reducing the heat damage to the components of the lifting section and ensuring the service life of the lifting section.

[0050] In this embodiment, the heating unit 2 has side plates 12 on both sides, and there are two conveying units 11. The two conveying units 11 are respectively located on the opposite surfaces of the side plates 12. The two conveying units 11 are used to support and synchronously drive the two ends of the product. A pressure plate 121 is slidably connected to the side plate 12. The pressure plate 121 and the side plate 12 are connected by a spring. The opposite surfaces of the two pressure plates 121 protrude from the opposite surfaces of the two side plates 12. The heating unit 2 is located between the two conveying units 11. When dispensing is required, the lifting part moves the heating plate 22 upward. At this time, the product is separated from the conveying unit 11 and is clamped by the heating plate 22 and the pressure plate 121 to fix the product and prevent the product from shifting during the dispensing process. Under the action of the spring, the clamping force on the product is reduced to avoid damage to the product.

[0051] Furthermore, multiple slide rails 122 are installed on the side plate 12, and the pressure plate 121 is provided with guide grooves 123 in the same number as the slide rails 122. The multiple slide rails 122 slide in the multiple guide grooves 123 respectively, so that when the lifting part pushes the product to squeeze the pressure plate 121, the pressure plate 121 moves in a straight line, avoiding the lateral displacement of the pressure plate 121 and causing the product to be misaligned.

[0052] A baffle assembly is provided on one side of the heating unit 2. The baffle assembly is located at the discharge end of the heating unit 2. The baffle assembly includes a second cylinder 82 and a baffle 81. The baffle 81 is installed at the output end of the second cylinder 82. Before the heating unit 2 lifts the product, the second cylinder 82 drives the baffle 81 to move upward to intercept the product and achieve product positioning to ensure the accuracy of the dispensing position.

[0053] The heating plate 22 includes: a housing and multiple sets of heating rods 222; the multiple sets of heating rods 222 are arranged at intervals inside the housing.

[0054] In this embodiment, there are two heating rods 222 connected end to end. The interval between multiple sets of heating rods 222 is 40-60 mm to ensure that the heat radiation area of ​​the two heating rods 222 meets the requirements of the interval area during heating. Multiple detection units 24 are located at both ends of a set of heating rods 222. When a temperature difference is detected at both ends, the corresponding heating rod 222 is controlled to heat up or stop heating, realizing regional control and timely reducing the temperature difference between each region.

[0055] The adjustment part 23 includes: a support leg 231 and a set screw 232; the support leg 231 is fixedly connected to the upper support plate 211, and the support leg 231 is bolted to the heating plate 22; the set screw 232 is provided on the heating plate 22, and both ends of the set screw 232 pass through the heating plate 22; one end of the set screw 232 is opposite to the support leg 231; the set screw 232 is used to adjust the distance between the heating plate 22 and the support leg 231.

[0056] In this embodiment, the distance between the heating plate 22 and its corresponding support leg 231 is controlled by the set screw 232, thereby adjusting the height of the heating plate 22 at each angle and keeping the heating plate 22 horizontal. The support leg 231 is connected to the heating plate 22 by bolts, thereby fixing the heating plate 22. Preferably, there are two bolts, which are located on both sides of the set screw 232, to further ensure the horizontality and stability of the heating plate 22.

[0057] Multiple adjustment parts 23 are distributed around the bottom of the heating plate 22 to adjust the angle of the heating plate 22 from multiple directions, keeping the heating plate 22 horizontal. Preferably, there are six adjustment parts 23, two of which are arranged opposite each other in the middle of the upper support plate 211 along its length, and the other four are respectively arranged at the four corners of the upper support plate 211. The length direction of the adjustment parts 23 is parallel to the length direction of the upper support plate 211, so as to facilitate installation in the gap between the two heating rods 222, avoiding interference with the heating rods 222 and optimizing the installation space. By setting multiple adjustment parts 23, the horizontality of the heating plate 22 can be adjusted, making the contact distance between the product on the heating plate 22 and the adhesive more uniform during the dispensing process, ensuring the uniformity of dispensing, and also providing stable support for the heating plate 22.

[0058] The lifting unit includes a first cylinder 212 and a guide unit 213. The fixed end of the first cylinder 212 is connected to the base 1, and the output end of the first cylinder 212 is connected to the center of the upper support plate 211. The guide unit 213 is disposed on the base 1 to guide the movement of the upper support plate 211. There are multiple guide units 213, which are spaced apart on the base 1.

[0059] The guide unit 213 includes a linear bearing 2131 and a guide shaft 2132. One end of the guide shaft 2132 is slidably connected inside the linear bearing 2131, and the other end of the guide shaft 2132 is connected to the upper support plate 211. The linear bearing 2131 is connected to the base 1.

[0060] In this embodiment, there are four guide units 213, which are located at the four corners of the base 1. They serve to guide the upper support plate 211 while restraining each other, thus achieving a stable balance and keeping the upper support plate 211 in a horizontal moving state.

[0061] The base 1 is also provided with a limiting part, which includes a first limiting unit 131 and a second limiting unit 132. The first limiting unit 131 is used to limit the upward movement height of the upper support plate 211, and the second limiting unit 132 is used to limit the downward movement height of the upper support plate 211, so as to ensure the accuracy of the position movement of the upper support plate 211, so that the adhesive can fully contact the product and ensure the quality of the dispensing operation.

[0062] The first limiting unit 131 includes: a first limiting plate 1311 and a first limiting block 1313; the first limiting plate 1311 is mounted on the base 1, and a square groove 1312 penetrating through its side wall is provided on the first limiting plate 1311; the first limiting block 1313 is provided on the upper support plate 211, and the first limiting block 1313 is L-shaped, with the bottom of the first limiting block 1313 inserted into the interior of the square groove 1312.

[0063] In this embodiment, during the process of the first cylinder 212 driving the upper support plate 211 to move upward, when it moves to the upper limit position, the first limiting block 1313 abuts against the upper surface of the square groove 1312 on the first limiting plate 1311, so as to limit the upper support plate 211.

[0064] The second limiting unit 132 includes: a second limiting block 1323, a support base 1321, and two buffer blocks 1322; the second limiting block 1323 is disposed on the upper support plate 211 and is T-shaped; the support base 1321 is disposed on the base 1 and is disposed opposite to the second limiting block 1323 to limit the downward movement height of the second limiting block 1323; the two buffer blocks 1322 are respectively located at both ends above the support base 1321 to reduce the impact force between the second limiting block 1323 and the support base 1321.

[0065] In this embodiment, during the process of the first cylinder 212 driving the upper support plate 211 to move downward, when it moves to the lower limit, the second limit block 1323 abuts against the upper surface of the support base 1321, thus playing a limiting role.

[0066] Furthermore, the support base 1321 is also provided with a second limiting plate, which is inverted L-shaped. The side wall of the second limiting block 1323 is also provided with a protrusion, which is arranged opposite to the second limiting plate. During the process of the first cylinder 212 driving the upper support plate 211 to move upward, the second limiting plate abuts against the protrusion, which plays a limiting role on the upper support plate 211. The second limiting plate and the support base 1321 are connected by bolts. The side wall of the second limiting plate is provided with a waist eye, which is used to control the installation height of the second limiting plate when connected to the support base 1321, so as to adjust the limiting height of the upper support plate 211.

[0067] The base 1 is equipped with a positioning detection unit, which is used to detect whether the lifting part has driven the upper support plate 211 to move into position.

[0068] The positioning detection unit includes two second photoelectric sensors 71 and two second trigger plates 72. The two second photoelectric sensors 71 are fixedly installed on the base 1, and the two second trigger plates 72 are fixedly installed on the upper support plate 211. The two second trigger plates 72 correspond one-to-one with the two second photoelectric sensors 71. One second photoelectric sensor 71 is used to detect whether the upper support plate 211 has moved into position when the lifting part is in the output state; the other second photoelectric sensor 71 is used to detect whether the upper support plate 211 has moved into position when the lifting part is in the return state, thereby further improving the accuracy of controlling the moving height of the upper support plate 211.

[0069] The output end of the drive unit 4 is provided with a back plate 41. The drive unit 4 is used to drive the back plate 41 to move. A positioning plate 411 is provided on one side of the back plate 41. The positioning plate 411 has a positioning surface on one side, and the positioning surface forms an angle with one side of the back plate 41. The dispensing unit 3 includes a fixing part 31, which is used to fix the dispensing pen. The fixing part 31 includes a connecting plate 311. One side of the connecting plate 311 is attached to one side of the back plate 41, and the other side of the connecting plate 311 is attached to the positioning surface, so as to facilitate the positioning of the installation position of the fixing part 31. The connecting plate 311 and the positioning plate 411 are connected by bolts to facilitate the disassembly and assembly of the fixing part 31.

[0070] In this embodiment, the dispensing pen is fixed by the fixing part 31. The fixing part 31 is assembled and disassembled as a whole. Therefore, when the dispensing pen is installed on the fixing part 31, the dispensing pen can be corrected. When replacing the dispensing pen, the positioning plate 411 is connected to the fixing part 31. The fixing part 31 is positioned by the positioning surface and the back plate 41. Only by tightening and loosening the bolts, the dispensing pen can be quickly replaced according to the dispensing requirements. This allows the fixing part 31 to be installed quickly with accurate positioning, avoiding the subsequent correction steps. It achieves the effect of accurate positioning and fast installation. At the same time, it avoids the need to use multiple driving parts 4 to drive different dispensing pens to meet different dispensing requirements, which would cause motion interference. This ensures the flexibility of the driving space movement of the driving part 4.

[0071] The dispensing unit 3 also includes a vision module, which is mounted on the back plate 41 and arranged side by side with the fixing part 31. The vision module is used to determine the dispensing position.

[0072] In this embodiment, the vision module includes a camera 321, a light source 323, and a displacement sensor 322. The camera 321 is used to confirm the planar position of the dispensing pen. The light source 323 is located on one side of the camera 321 to supplement the light. The displacement sensor 322 is used to confirm the height position of the dispensing pen. The displacement sensor 322 is located on the other side of the camera 321. The vision module and the fixing part 31 are arranged side by side, realizing that multiple dispensing pens can share a single driving part 4 and vision module, reducing equipment costs. The displacement sensor 322 and the light source 323 are arranged diagonally, that is, the camera 321, the light source 323, and the displacement sensor 322 are arranged in a triangle, which effectively shortens the area occupied by the vision module on the back plate 41, optimizes the layout, and reduces the size of the back plate 41.

[0073] The fixing part 31 includes: a clamping assembly 312, a positioning block 313, and a liquid level sensor 314; the clamping assembly 312 is used to clamp one end of the dispensing pen, the clamping assembly 312 is disposed on the connecting plate 311, and the clamping assembly 312 is disposed opposite to the back plate 41; the positioning block 313 and the clamping assembly 312 are located on the same side of the connecting plate 311, and the positioning block 313 is provided with a connecting hole 336, which passes through the positioning block 313 for connecting the other end of the dispensing pen; the liquid level sensor 314 is used to detect the amount of glue in the dispensing pen.

[0074] In this embodiment, by setting the clamping assembly 312 opposite to the back plate 41, interference between the clamping assembly 312 and the moving position of the driving part 4 is avoided. Simultaneously, the mounting surface of the bolts is avoided when the connecting plate 311 is connected to the positioning surface, thus preventing the clamping assembly 312 from obstructing the bolts and restricting installation. This facilitates bolt installation by the operator. The liquid level sensor 314 is mounted on the fixing part 31, ensuring that the liquid level sensor 314 always matches the position of the dispensing pen on its corresponding fixing part 31. This allows for easy replacement of the dispensing pen by simply removing and installing the bolts on the fixing part 31, eliminating the need to readjust the position of the liquid level sensor 314 according to different dispensing pen models. This speeds up the replacement process. The liquid level sensor 314 can be of the same model but with different shapes of sheet metal parts fixed to the corresponding fixing parts 31 of different dispensing pens. These parts can be shared during replacement or maintenance, reducing the number of spare liquid level sensors 314 and lowering costs.

[0075] The liquid level sensor 314 can be fixed to the back plate 41 using sheet metal parts, which can avoid disassembling the liquid level sensor 314 when replacing the dispensing pen, thereby speeding up the installation of the clamping assembly 312.

[0076] The clamping assembly 312 includes a first retaining ring 3121 and a second retaining ring 3123. The first retaining ring 3121 is connected to the connecting plate 311. A first groove 3122 is formed on the side surface of the first retaining ring 3121, and a second groove 3124 is formed on the side surface of the second retaining ring 3123. The first groove 3122 and the second groove 3124 are arranged opposite to each other. One end of the second retaining ring 3123 is rotatably connected to one end of the first retaining ring 3121, and the other end of the second retaining ring 3123 is connected to the other end of the first retaining ring 3121 by a snap fastener. When the snap fastener connects the first retaining ring 3121 and the second retaining ring 3123, one end of the dispensing pen is fixed in the first groove 3122 and the second groove 3124. The connecting hole 336 is a threaded hole, and the connecting end of the pen tip can be screwed into the threaded hole from bottom to top. The first retaining ring 3121 and the second retaining ring 3123 are used to fix the pen holder. Thus, the pen tip and the pen holder can be disassembled and assembled separately as needed, further improving work efficiency.

[0077] In another embodiment, the clamping assembly 312 includes a U-shaped clamping block 337. When one end of the dispensing pen is inserted into the pen holder, the opening of the U-shaped clamping block 337 faces the side wall of the pen holder. The pen holder is pushed into the U-shaped clamping block 337, and the two ends of the U-shaped clamping block 337 clamp the side wall of the pen holder, which speeds up the assembly. A fastening screw 3131 is threaded onto the side wall of the positioning block 313. One end of the fastening screw 3131 is inserted into the connecting hole 336 so that the other end of the dispensing pen can be clamped by screwing in the fastening screw 3131. By setting the fastening screw 3131, the requirement for the size of the connecting hole 336 can be reduced, which is suitable for pen tips of various sizes.

[0078] The glue volume calibration unit includes: a cleaning component, a weighing component 513, and multiple glue cups 512; the cleaning component is used to clean the tip of the dispensing pen, the weighing component 513 is used to measure the amount of glue dispensed, and the glue cups 512 are used to collect the waste glue discharged by the dispensing pen. The multiple glue cups 512 are respectively distributed on one side of the cleaning component and the weighing component 513.

[0079] The cleaning components include: a vacuum cleaning module 5113, a lint-free cloth adhesive wiping module 5112, and a high-adaptability cleaning module 5111; the vacuum cleaning module 5113 is used for initial cleaning of residual adhesive on the tip of the dispensing pen, the lint-free cloth adhesive wiping module 5112 is suitable for cleaning the tip of non-pointed dispensing pens, and the high-adaptability cleaning module 5111 is suitable for cleaning the tip of all types of dispensing pens.

[0080] In this embodiment, the position calibration unit includes a ceramic plate 521 and a tool setter 522. The tool setter 522 is used to detect the height deviation between the tip of the replaced dispensing pen and the tip of the original dispensing pen, so as to calibrate the height of the dispensing pen tip. The ceramic plate 521 is used to detect the position deviation between the tip of the replaced dispensing pen and the tip of the original dispensing pen and the camera 321, so as to calibrate the dispensing position. Before height calibration, the tip of the dispensing pen needs to be preliminarily cleaned. Therefore, the vacuum cleaning module 5113 is located on one side of the position calibration unit to shorten the distance between height calibration and preliminary cleaning, reduce the movement stroke of the drive unit 4, and after height calibration and dispensing position calibration, the dispensing pen tip will be... The glue pen moves above the glue cup 512 for a dispensing operation to remove any glue that may contain dirt, ensuring the cleanliness of the glue during subsequent dispensing operations. After dispensing, the glue pen is driven above the weighing component 513 for another dispensing operation to check the dispensing volume and calibrate it. After calibration, depending on the shape of the glue pen tip and cleaning requirements, either the lint-free cloth wiping module 5112 or the high-adaptability cleaning module 5111 is selected. The high-adaptability cleaning module 5111 is made of wool and can clean the tips of all types of glue pens, but it is more expensive. Therefore, the lint-free cloth wiping module 5112 can be used when not necessary to save costs. After cleaning, the dispensing operation can be performed.

[0081] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0082] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A high-precision dispensing device, characterized in that, include: A base (1) is provided with a conveying unit (11), and the product is located on the conveying unit (11). The conveying unit (11) is used to transport the product. A heating unit (2) is mounted on a base (1). The heating unit (2) includes multiple detection units (24) spaced apart for detecting the heating temperature of each area of ​​the heating unit (2). The heating unit (2) includes a lifting part, a heating plate (22), and multiple adjustment parts (23). The lifting part is mounted on the base (1), and an upper support plate (211) is provided on the output end of the lifting part. The heating plate (22) is connected to the upper support plate (211). The lifting part is used to drive the heating plate (22) to make linear reciprocating motion, and the upper support plate (211) is used to support the heating plate (22). The adjustment parts (23) are located on the upper support plate (211). Between the heating plate (22) and the heating plate (23), multiple adjustment parts (23) are distributed in multiple positions on the heating plate (22) to adjust the level of the heating plate (22); each adjustment part (23) includes a support leg (231) and a set screw (232); the support leg (231) is provided on the upper support plate (211), and the support leg (231) is bolted to the heating plate (22); the set screw (232) is provided on the heating plate (22), both ends of the set screw (232) penetrate the heating plate (22), one end of the set screw (232) is opposite to the support leg (231), and the set screw (232) is used to adjust the distance between the heating plate (22) and the support leg (231); A dispensing unit (3) is used to dispense adhesive onto the product on the heating unit (2); The driving unit (4) is located on the base (1), and the dispensing unit (3) is located on the output end of the driving unit (4). The driving unit (4) is used to control the dispensing unit (3) to move along the X, Y, and Z directions above the heating unit (2). The driving unit (4) is provided with a position detection unit to control the accuracy of the driving unit (4) in moving the dispensing unit (3). The calibration unit (5) is located on one side of the heating unit (2). The calibration unit (5) includes a glue quantity calibration section and a position calibration section. The glue quantity calibration section is used to calibrate the glue quantity of the dispensing unit (3), and the position calibration section is used to calibrate the dispensing position of the dispensing unit (3). The heating unit (2) has side plates (12) on both sides. There are two conveying units (11). The two conveying units (11) are respectively located on the opposite surfaces of the two side plates (12). The two conveying units (11) are used to support and synchronously drive the two ends of the product. A pressure plate (121) is slidably connected to the side plate (12). The pressure plate (121) and the side plate (12) are connected by a spring. The opposite surfaces of the two pressure plates (121) protrude from the opposite surfaces of the two side plates (12). The heating unit (2) is located between the two conveying units (11). Multiple slides (122) are installed on the side plate (12). The pressure plate (121) has the same number of guide grooves (123) as the slides (122). The multiple slides (122) slide in the multiple guide grooves (123).

2. The high-precision dispensing equipment according to claim 1, characterized in that, Multiple detection units (24) are spaced apart inside the heating plate (22) to detect the heating temperature of each area of ​​the heating plate (22).

3. The high-precision dispensing equipment according to claim 1, characterized in that, A heat insulation plate (223) is provided between the heating plate (22) and the upper support plate (211). The heat insulation plate (223) is used to reduce the heat transfer from the heating plate (22) to the lifting part.

4. The high-precision dispensing equipment according to claim 1, characterized in that, The heating plate (22) includes: case; Multiple sets of heating rods (222) are arranged at intervals inside the housing.

5. The high-precision dispensing equipment according to claim 1, characterized in that, The lifting section includes: The first cylinder (212) has its fixed end connected to the base (1) and its output end connected to the center of the upper support plate (211). A guide unit (213) is disposed on the base (1) to guide the movement of the upper support plate (211).

6. The high-precision dispensing equipment according to claim 5, characterized in that, The guide unit (213) includes a linear bearing (2131) and a guide shaft (2132). One end of the guide shaft (2132) is slidably connected inside the linear bearing (2131), and the other end of the guide shaft (2132) is connected to the upper support plate (211). The linear bearing (2131) is connected to the base (1).

7. The high-precision dispensing equipment according to claim 1, characterized in that, The output end of the drive unit (4) is provided with a back plate (41). The drive unit (4) is used to drive the back plate (41) to move. A positioning plate (411) is provided on one side of the back plate (41). The positioning plate (411) has a positioning surface on one side, and the positioning surface forms an angle with one side of the back plate (41). The dispensing unit (3) includes: a fixing part (31) for fixing the dispensing pen. The fixing part (31) includes a connecting plate (311). One side of the connecting plate (311) is attached to one side of the back plate (41), and the other side of the connecting plate (311) is attached to the positioning surface to facilitate positioning of the installation position of the fixing part (31). The connecting plate (311) and the positioning plate (411) are connected by bolts to facilitate disassembly and assembly of the fixing part (31).

8. The high-precision dispensing equipment according to claim 7, characterized in that, The dispensing unit (3) also includes a vision module, which is arranged side by side with the fixing part (31) and is used to determine the dispensing position.

9. The high-precision dispensing equipment according to claim 7, characterized in that, The fixing part (31) includes: A clamping assembly (312) is used to clamp one end of a dispensing pen. The clamping assembly (312) is disposed on a connecting plate (311) and is disposed opposite to the back plate (41). Positioning block (313), the positioning block (313) and the clamping assembly (312) are located on the same side of the connecting plate (311), the positioning block (313) is provided with a connecting hole (336), the connecting hole (336) passes through the positioning block (313) for connecting the other end of the glue pen; A liquid level sensor (314) is used to detect the amount of adhesive in the dispensing pen.

10. The high-precision dispensing equipment according to claim 1, characterized in that, The adhesive volume calibration unit includes: A cleaning component for cleaning the tip of a dispensing pen; Weighing component (513) for measuring the amount of adhesive dispensed; Multiple glue cups (512) are used to collect waste glue discharged from the glue pen. The multiple glue cups (512) are respectively distributed on one side of the cleaning component and the weighing component (513).

11. The high-precision dispensing equipment according to claim 10, characterized in that, The cleaning components include: Vacuum cleaning module (5113), the vacuum cleaning module (5113) is used for preliminary cleaning of residual glue on the tip of the dispensing pen; A lint-free cloth adhesive cleaning module (5112) is used for cleaning the tip of a non-pointed adhesive pen. A high-adaptability cleaning module (5111) is used for cleaning the tips of all types of dispensing pens.

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