Glue coating device for semiconductor cooling sheet

Abstract

The present invention relates to the technical field of semiconductor refrigeration plate gluing equipment, and specifically discloses a gluing device for semiconductor refrigeration plates, comprising a workbench, a glue head replacement component and a cleaning unit. A transverse sliding frame is fixedly connected to the top of the workbench, a longitudinal sliding frame is slidably matched on the transverse sliding frame, a glue applicator is slidably matched on the longitudinal sliding frame, the glue head replacement component is installed on the workbench, and the cleaning unit comprises a first rotating sleeve, a guide rod and a fixed ring. The internal thread of the first rotating sleeve is matched with a cleaning rod, the guide rod is slidably matched with the cleaning rod, the fixed ring is connected to a rotating arm, and an extrusion component is arranged inside the fixed ring to extrude the colloid in the glue head into blocks. The gluing device provided by the present invention is convenient for replacing the glue head and cleaning the residual glue in the glue head.

Description

Technical Field

[0001] The invention relates to the technical field of semiconductor refrigeration sheet gluing equipment, and in particular to a gluing device for semiconductor refrigeration sheets. Background Art

[0002] During the processing and assembly of semiconductor refrigeration plates, in order to increase the thermal contact between the refrigeration plate and the radiator, heat sink or other heat exchange interface and improve the heat conduction efficiency, the refrigeration plate needs to be coated with glue. In the related art, the refrigeration plate is mostly coated with glue by a gluing device. When using the gluing device to coat the refrigeration plate with glue, different types of gluing heads need to be replaced according to the requirements of gluing accuracy, width and thickness. The gluing devices and gluing heads in the related art are mostly detachable structures. When replacing the gluing head, the gluing head needs to be closed and manually disassembled and replaced by hand or with a wrench, which is inefficient. In order not to affect the secondary use of the gluing head, the residual glue in the replaced gluing head also needs to be cleaned.

[0003] The patent document with the publication number CN116943953A discloses a gluing device for semiconductor refrigeration chip packaging, including a workbench, a gluing mechanism is arranged on the top of the workbench, an adjusting structure is arranged inside the workbench, the adjusting mechanism includes a head changing assembly and a cleaning assembly, the head changing assembly includes a rotating shaft 1, a tray, a gluing needle and a collecting tray, the tray is sleeved on the outside of the rotating shaft 1 and connected to the rotating shaft 1 for damping rotation, each gluing needle is distributed in a circular array on the tray, the top of the gluing needle is threadedly connected to the output end of the nozzle, the gluing needle passes through the collecting tray, the cleaning assembly includes a connecting block fixed to one side of the nozzle, an empty cylinder is fixed at the other end of the connecting block, a rear sliding rod 1 is slidably arranged inside the empty cylinder, a piston sheet is fixed at the bottom end of the sliding rod 1, the piston sheet is sealingly and slidably connected to the inner wall of the empty cylinder, a telescopic spring 2 is fixed at the bottom of the piston sheet, the other end of the telescopic spring 2 is fixed to the inner wall of the bottom of the air conditioner, and the bottom end of the empty cylinder is threadedly connected to the top of the gluing head;

[0004] The gluing device provided by the above patent document replaces the gluing needle with a gluing needle that meets the gluing size through a head replacement component, and cleans the gluing needle through a cleaning component. When the cleaning component cleans the gluing needle, the sliding rod is pressed to drive the piston plate to squeeze the air inside the empty cylinder into the gluing needle, and squeeze the epoxy glue inside the gluing needle, so that the excess epoxy glue flows into the collection tray through the gluing needle. The epoxy glue has a certain viscosity. By injecting air to squeeze the epoxy glue out, some epoxy glue will remain on the side wall of the gluing needle, and there is a diameter difference between the upper and lower ends of the gluing needle. When cleaning, some of the epoxy glue in the gluing needle will be retained at the bosses on the upper and lower ends of the gluing needle and cannot be discharged smoothly, resulting in the problem of unsatisfactory cleaning effect of the residual glue in the gluing needle. Summary of the invention

[0005] The present invention provides a glue coating device for semiconductor refrigeration sheets, aiming to solve the problem in the related art that when the glue coating device cleans the replaced glue head, epoxy glue is easily left inside the glue head, resulting in unsatisfactory cleaning effect of the residual glue in the glue head.

[0006] The gluing device for semiconductor cooling sheets of the present invention comprises a workbench, a transverse sliding frame is fixedly connected to the top of the workbench, a longitudinal sliding frame is slidably matched on the transverse sliding frame, a gluing device is slidably matched on the longitudinal sliding frame, and further comprises:

[0007] A rubber head replacement assembly, the rubber head replacement assembly is installed between the workbench and the horizontal sliding frame, and is used to replace the colloid in the rubber head after cleaning. The rubber head replacement assembly includes a driving unit, a rotating arm and a holding tray. The driving unit is arranged on the workbench, the rotating arm is rotatably assembled on the driving unit, an L-shaped plate is fixedly connected to the rotating arm, the holding tray is rotatably matched with the rotating arm, and a plurality of positioning holes are opened on the holding tray;

[0008] A cleaning unit, the cleaning unit includes a first rotating sleeve, a guide rod and a fixed ring, the internal thread of the first rotating sleeve is matched with the cleaning rod so that the cleaning rod can move up and down, the guide rod is fixedly connected to the L-shaped plate and slidably cooperates with the cleaning rod so that the guide rod limits the position of the cleaning rod, the fixed ring is connected to the rotating arm, and an extrusion assembly is arranged inside the fixed ring to extrude the colloid in the rubber head into blocks.

[0009] The beneficial effects are: it is convenient to replace the rubber head as needed and to fully clean the residual glue in the replaced rubber head. The holding tray can store the spare rubber heads on the one hand and drive the rubber heads to rotate on the other hand so that the rubber heads can be installed on the glue applicator. The cleaning unit pushes out the residual glue at the lower end of the rubber head and takes out the residual glue at the connecting end of the rubber head from the rubber head, so as to process the residual glue at the upper and lower ends of the rubber head respectively, thereby ensuring the cleaning effect of the residual glue in the rubber head.

[0010] Preferably, the extrusion assembly includes a top ring, which is arranged inside the fixed ring, and the top ring is slidably fitted on the cleaning rod. The outer side of the top ring is slidably fitted with a resist ring, and the resist ring corresponds to the first ring groove. A positioning groove is provided on the outer side of the top ring, and the inner wall of the resist ring has a slider, and the slider slides in the positioning groove.

[0011] Preferably, the first ring groove has an electric contact plate, and an electric heating ring is provided below the abutment ring, and the electric heating ring is used in conjunction with the electric contact plate.

[0012] The beneficial effect is: after the rubber block at the connecting end of the rubber head is taken out, the connecting end of the rubber head is closed, and the electric heating ring is used in conjunction with the electric contact plate to heat the rubber block, causing the rubber block to extend outward, thereby increasing the area of ​​the rubber block, and allowing the pancake-shaped colloid to cover the inlet end of the rubber head to ensure the sealing of the inlet end of the rubber head.

[0013] Preferably, the top ring has an annular cavity inside, a pressure ring is slidably fitted inside the annular cavity, a transmission wheel is provided between the annular cavity and the positioning groove, the circumference of the transmission wheel is in contact with the slider and the pressure ring respectively, sliding grooves are provided on both sides of the annular cavity, a limit plate is slidably fitted inside the sliding groove, the limit plate passes through the bottom of the annular cavity and extends to the outside of the top ring, a fixed plate is slidably fitted above the limit plate, and an elastic member is fixedly connected between the fixed plate and the pressure ring.

[0014] Preferably, the slide groove is arranged at an angle, and the shape of the limit plate is adapted to slide in the slide groove.

[0015] The beneficial effects are: it is easy for the cleaning unit to smoothly remove the rubber block in the rubber head connecting end; the top ring cooperates with the abutment ring to squeeze the colloid inside the rubber head connecting end into a pancake shape; the limit plate is used to obliquely insert into the colloid during the colloid extrusion process to prevent the colloid from falling off during the upward movement of the rubber head connecting end.

[0016] Preferably, a first limiting groove is formed on the outer side of the cleaning rod, and a guide block is fixedly connected to the inner wall of the top ring, and the guide block is slidably fitted in the first limiting groove.

[0017] Preferably, a reciprocating thread groove is provided on the inner wall of the first rotating sleeve, and a first protrusion used in cooperation with the reciprocating thread groove is fixedly connected to the upper end of the cleaning rod.

[0018] Preferably, the cleaning rod has a cavity, a guide groove is provided inside the cavity, a second protrusion is fixedly connected to the lower end of the guide rod, the second protrusion is slidably matched with the guide groove, the guide groove is divided into a straight groove and a spiral groove, and the spiral groove is located above the straight groove.

[0019] The beneficial effect is: improving the cleaning effect of the cleaning rod on the colloid in the rubber head, the straight groove is arranged along the length direction of the cleaning rod, and the cooperation between the spiral groove and the second protrusion can rotate when the cleaning rod descends to a certain position, so that the cleaning rod can be separated from the colloid after pushing the colloid out of the rubber head.

[0020] Preferably, a fixed plate is provided below the containing plate, and the fixed plate is connected below the rotating arm. A connecting column is fixedly connected below the containing plate, and an end of the connecting column away from the containing plate is fixedly connected to a rotating plate, and the rotating plate is rotatably engaged with the fixed plate, and a plurality of rubber collecting rings are fixedly connected to the circumference of the rotating plate, and the plurality of rubber collecting rings correspond one-to-one to a plurality of positioning holes. The fixed plate has a second annular groove, and the rubber collecting ring slides in the second annular groove.

[0021] Preferably, a feed port is provided on the second annular groove, a baffle plate is fixedly connected above the fixed disk, the baffle plate is located above the feed port, an elastic push rod is installed on the baffle plate, the elastic push rod passes through the baffle plate and extends toward the feed port, and a collection box is fixedly connected below the fixed disk, the collection box corresponds to the feed port.

[0022] The beneficial effect is that it is convenient to collect the cleaned colloid. After the colloid enters the rubber collecting ring, the rubber collecting ring moves toward the feed port as the containing plate rotates. When the rubber collecting ring moves to the position of the elastic push rod, the elastic push rod pushes the colloid in the rubber collecting ring into the collection box to clean the colloid in the rubber collecting ring.

[0023] By adopting the above technical solution, the beneficial effects of the present invention are as follows:

[0024] (1) It is convenient to replace the rubber head as needed and to fully clean the residual glue in the replaced rubber head. The holding tray can store the spare rubber heads on the one hand and drive the rubber heads to rotate on the other hand so that the rubber heads can be installed on the glue applicator. The cleaning unit pushes out the residual glue at the lower end of the rubber head and takes out the residual glue at the connecting end of the rubber head from the rubber head, so as to process the residual glue at the upper and lower ends of the rubber head respectively, thereby ensuring the cleaning effect of the residual glue in the rubber head.

[0025] (2) It is convenient for the cleaning unit to smoothly remove the rubber block in the rubber head connection end. The top ring cooperates with the back ring to squeeze the colloid inside the rubber head connection end and squeeze the colloid into a pancake shape. The limit plate is used to obliquely insert into the colloid during the colloid extrusion process to prevent the colloid from falling off during the upward movement relative to the rubber head connection end. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0027] Figure 2 It is a structural schematic diagram of the rubber head replacement assembly of the present invention.

[0028] Figure 3 It is a schematic diagram of the structure of the cooperation between the driving bevel gear and the driven gear of the present invention.

[0029] Figure 4 It is a schematic diagram of the cross-sectional structure of the first rotating sleeve of the present invention.

[0030] Figure 5 The present invention Figure 4 Schematic diagram of the structure enlarged at point A in the middle.

[0031] Figure 6 It is a schematic structural diagram of the top ring of the present invention from a first viewing angle.

[0032] Figure 7 It is a schematic structural diagram of the top ring of the present invention from a second viewing angle.

[0033] Figure 8 It is a structural schematic diagram of the guide groove of the present invention.

[0034] Fig. 9 It is a structural schematic diagram of the fixed disk of the present invention.

[0035] Fig.10 It is a schematic structural diagram of the rubber head of the present invention.

[0036] Reference numerals:

[0037] 1. Workbench; 2. Horizontal sliding frame; 3. Longitudinal sliding frame; 4. Glue applicator; 5. Threaded screw; 6. Rotating arm; 7. Fixed plate; 8. Serving plate; 61. Support arm; 62. L-shaped plate; 63. Scraper; 64. First drive; 65. Second drive; 66. Cleaning unit; 67. Second rotating sleeve; 671. Lifter; 641. Active bevel gear; 661. First rotating sleeve; 662. Guide rod; 663. Fixed ring; 664. Driven gear; 665. Top ring; 666. Press ring; 667. Thrust ring; 6601. Guide block ; 6602, first limiting groove; 6611, reciprocating thread groove; 6621, cleaning rod; 6622, guide groove; 6631, first annular groove; 6651, positioning groove; 6652, transmission wheel; 6653, limiting plate; 6654, annular cavity; 6655, slide groove; 6656, fixing plate; 6657, elastic member; 6658, second limiting groove; 71, second annular groove; 72, feed port; 73, collecting box; 74, shielding plate; 741, elastic top rod; 81, connecting column; 82, rotating disk; 83, rubber collecting ring; 84, positioning hole. DETAILED DESCRIPTION

[0038] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0039] like Figure 1As shown, the gluing device for semiconductor refrigeration plates provided by the present invention includes a workbench 1, a transverse sliding frame 2 is fixedly connected to the top of the workbench 1, a longitudinal sliding frame 3 is slidably matched on the transverse sliding frame 2, a glue applicator 4 is slidably matched on the longitudinal sliding frame 3, a glue head replacement component is installed between the workbench 1 and the transverse sliding frame 2, and the glue head replacement component is used in conjunction with the glue applicator 4 to achieve replacement of the glue head on the glue applicator 4 to avoid the situation where the glue head is blocked and the glue applicator 4 cannot be used.

[0040] like Figure 1 and Figure 2 As shown, the glue head replacement assembly includes a driving unit, a rotating arm 6, a fixed disk 7 and a receiving disk 8. The rotating arm 6 is rotatably assembled on the driving unit. The fixed disk 7 is fixedly connected to the bottom of the rotating arm 6 through a support arm 61. The receiving disk 8 is arranged above the fixed disk 7 and rotatably engaged on the rotating arm 6. A plurality of positioning holes 84 are provided on the receiving disk 8. The positioning holes 84 are used to limit the position of the glue head to facilitate cleaning of the glue inside the glue head. In detail, a second driver 65 is assembled on the rotating arm 6. The second driver 65 is a motor. The driving end of the second driver 65 passes through the rotating arm 6 and is fixedly connected to the receiving disk 8. The containing tray 8 and the rotating arm 6 are arranged at intervals, and a connecting column 81 is fixedly connected to the bottom of the containing tray 8. A rotating disk 82 is fixedly connected to the end of the connecting column 81 away from the containing tray 8. The rotating disk 82 is rotatably engaged on the fixed disk 7. A plurality of rubber collecting rings 83 are fixedly connected to the circumference of the rotating disk 82. The rubber collecting rings 83 can collect the colloid squeezed out of the rubber head. The plurality of rubber collecting rings 83 correspond one by one to the plurality of positioning holes 84. A cleaning unit 66 is provided on the rotating arm 6, and the cleaning unit 66 extends into the rubber head to squeeze out the colloid in the rubber head.

[0041] Specifically, the receiving tray 8 is driven to rotate by the second driver 65 so that the glue head on the receiving tray 8 can rotate, so as to move the spare glue head to the bottom of the glue applicator 4, thereby realizing the replacement of the glue head.

[0042] The driving unit includes a threaded screw 5 and a lifter 671. The threaded screw 5 is vertically fixedly connected to the workbench 1. The rotating arm 6 is threadedly engaged with the threaded screw 5. The upper part of the rotating arm 6 is rotatably engaged with a second rotating sleeve 67. The lifter 671 is fixedly connected to the lower part of the transverse sliding frame 2. The lifter 671 can be a telescopic structure such as a cylinder or an electric telescopic rod. The telescopic end of the lifter 671 is fixedly connected to the second rotating sleeve 67.

[0043] Specifically, the rotating arm 6 can move up and down under the action of the lifter 671, and at the same time, the rotating arm 6 can rotate when the threaded screw 5 moves up and down, so that the containing tray 8 on the rotating arm 6 rotates to the bottom of the glue applicator 4 to avoid the containing tray 8 being located above the workpiece to be processed, which affects the dispensing of the workpiece to be processed.

[0044] like Figures 2 to 4 and Figure 8 As shown, the cleaning unit 66 includes a first driver 64, a first rotating sleeve 661, a guide rod 662, a fixed ring 663 and a cleaning rod 6621. The first rotating sleeve 661 is vertically arranged and rotatably fitted above the rotating arm 6. The outer side of the first rotating sleeve 661 is provided with a driven gear 664, and the driven gear 664 is a bevel gear. The first driver 64 is fixedly connected to the rotating arm 6, and the driving end of the rotating arm 6 is fixedly connected with an active bevel gear 641, and the active bevel gear 641 is meshed with the driven gear 664.

[0045] The guide rod 662 and the cleaning rod 6621 are both located in the first rotating sleeve 661, the cleaning rod 6621 is located below the guide rod 662, the cleaning rod 6621 is threadedly engaged in the first rotating sleeve 661, the cleaning rod 6621 is slidably engaged in the guide rod 662, an L-shaped plate 62 is fixedly connected to the rotating arm 6, the end of the first rotating sleeve 661 away from the rotating arm 6 is rotatably engaged on the L-shaped plate 62, and the guide rod 662 is fixedly connected to the L-shaped plate 62. In detail, a reciprocating thread groove 6611 is provided on the inner wall of the first rotating sleeve 661, and the upper end of the cleaning rod 6621 is fixedly connected to the reciprocating thread groove 6 The first protrusion used in conjunction with 611, the reciprocating thread groove 6611 and the first protrusion can enable the first rotating sleeve 661 to rotate in one direction to achieve the effect of moving the cleaning rod 6621 up and down. The cleaning rod 6621 has a cavity, and a guide groove 6622 is provided inside the cavity. The lower end of the guide rod 662 is fixedly connected with a second protrusion, and the second protrusion is slidably matched with the guide groove 6622. The guide groove 6622 is divided into a straight groove and a spiral groove. The spiral groove is located above the straight groove, and the straight groove is arranged along the length direction of the cleaning rod 6621. The cooperation between the spiral groove and the second protrusion can rotate when the cleaning rod 6621 drops to a certain position.

[0046] Specifically, the cooperation between the active bevel gear 641 and the driven gear 664 can drive the first rotating sleeve 661 to rotate. The rubber head includes a connecting end and a needle tip (such as Fig.10 As shown in FIG. 1 ), the first rotating sleeve 661 drives the cleaning rod 6621 to move up and down through the threaded engagement with the cleaning rod 6621, so that the cleaning rod 6621 can squeeze out the colloid in the needle tip.

[0047] like Figures 4 to 7As shown, the fixed ring 663 is fixedly connected to the bottom of the rotating arm 6, and a first annular groove 6631 is provided below the fixed ring 663. An extrusion assembly is arranged inside the fixed ring 663, and the extrusion assembly includes a top ring 665. The top ring 665 is arranged inside the fixed ring 663. The top ring 665 is slidably fitted on the cleaning rod 6621. A butt ring 667 is slidably fitted on the outer side of the top ring 665. The butt ring 667 corresponds to the first annular groove 6631. In detail, the first annular groove 6631 has an electric contact plate, and an electric heating ring is provided below the butt ring 667. The electric heating ring cooperates with the electric contact plate to heat the rubber block, so that the rubber block extends outward and increases the area of ​​the rubber block, so that the pancake-shaped colloid covers the inlet end of the rubber head to ensure the sealing of the inlet end of the rubber head. A positioning groove 6651 is provided on the outer side of the top ring 665 , and a sliding block is provided on the inner wall of the retaining ring 667 . The sliding block slides in the positioning groove 6651 . The cooperation between the positioning groove 6651 and the sliding block can limit the retaining ring 667 on the top ring 665 .

[0048] Specifically, the cooperation between the top ring 665 and the back ring 667 can squeeze the colloid inside the connecting end of the rubber head, squeeze the colloid into a pancake shape, and achieve cleaning of the colloid inside the connecting end.

[0049] The top ring 665 has an annular cavity 6654 inside, and a pressure ring 666 is slidably fitted inside the annular cavity 6654. Specifically, a second limiting groove 6658 is provided on the inner side of the annular cavity 6654, and a convex ring is provided on the inner side of the pressure ring 666. The convex ring is slidably fitted in the second limiting groove 6658. The cooperation between the second limiting groove 6658 and the convex ring can confine the pressure ring 666 in the annular cavity 6654. A transmission wheel 6652 is provided between the annular cavity 6654 and the positioning groove 6651. The circumference of the transmission wheel 6652 is in contact with the slider and the pressure ring 666 respectively. A slide groove 6655 is provided on both sides of the annular cavity 6654. A limit plate 6653 is slidably matched inside the slide groove 6655. The limit plate 6653 passes through the bottom of the annular cavity 6654 and extends to the outside of the top ring 665. In detail, the slide groove 6655 is tilted, and the shape of the limit plate 6653 is slidably matched with the slide groove 6655. The limit plate 6653 is inserted into the rubber block at an angle, which can increase the connection strength between the limit plate 6653 and the rubber block and prevent the rubber block from falling off during movement. A fixed plate 6656 is slidably matched above the limit plate 6653. An elastic member 6657 is fixedly connected between the fixed plate 6656 and the pressure ring 666. The elastic member 6657 can be a spring or an elastic telescopic rod.

[0050] Specifically, during the up and down movement of the top ring 665, the resisting ring 667 can drive the pressing ring 666 to move up and down through the transmission wheel 6652, so that the pressing ring 666 drives the limiting plate 6653 to extend or contract through the elastic member 6657 and the fixing plate 6656, so that the limiting plate 6653 extends and contacts the rubber block, so that the rubber can be taken out of the rubber head, and the limiting plate 6653 contracts and separates from the rubber block, making it easier for the rubber block to detach from the top ring 665.

[0051] like Figure 4 , Figure 5 and Fig.10 As shown, a first limiting groove 6602 is provided on the outer side of the cleaning rod 6621, and the first limiting groove 6602 is arranged along the length direction of the cleaning rod 6621. A guide block 6601 is fixedly connected to the inner wall of the top ring 665, and the guide block 6601 is slidably fitted in the first limiting groove 6602. The cooperation between the guide block 6601 and the first limiting groove 6602 can, on the one hand, prevent the top ring 665 from rotating on the first limiting groove 6602, and on the other hand, the guide block 6601 can squeeze out the colloid in the first limiting groove 6602, thereby sealing the center hole of the rubber ring to prevent dust or particles from entering the rubber head.

[0052] like Figure 2 and Fig. 9 As shown, the fixed disk 7 has a second annular groove 71, and the rubber collecting ring 83 slides in the second annular groove 71. The inner ring diameter of the rubber collecting ring 83 is larger than the diameter of the rubber head, so as to contain more colloid squeezed out by the rubber head. A feed port 72 is provided on the second annular groove 71, and a baffle plate 74 is fixedly connected to the top of the fixed disk 7. The baffle plate 74 is located above the feed port 72, and an elastic push rod 741 is installed on the baffle plate 74. The elastic push rod 741 penetrates the baffle plate 74 and extends toward the feed port 72. A collecting box 73 is fixedly connected to the bottom of the fixed disk 7, and the collecting box 73 corresponds to the feed port 72.

[0053] Specifically, after the colloid enters the rubber collecting ring 83, the rubber collecting ring 83 rotates with the containing plate 8 and moves toward the feed port 72. When the rubber collecting ring 83 moves to the position of the elastic push rod 741, the elastic push rod 741 pushes the colloid in the rubber collecting ring 83 into the collecting box 73 to clean the colloid in the rubber collecting ring 83.

[0054] Working principle of the present invention:

[0055] When the glue head on the glue applicator 4 needs to be replaced, the lifter 671 moves the rotating arm 6 downward through the second rotating sleeve 67, and the rotating arm 6 rotates to the bottom of the glue applicator 4 through the threaded screw 5, and the glue head on the glue applicator 4 descends and enters the positioning hole 84;

[0056] Then, the second driver 65 drives the holding tray 8 to rotate. Since the glue applicator 4 is magnetically connected to the glue head, the used glue head on the glue applicator 4 is separated under the rotation of the holding tray 8. The holding tray 8 continues to rotate, and the cleaned and spare glue head on the holding tray 8 corresponds to the glue applicator 4. The glue applicator 4 contacts the glue head under the action of magnetic attraction, and the installation between the glue applicator 4 and the glue head is completed. The glue applicator 4 rises, so that the glue head on the glue applicator 4 is separated from the positioning hole 84, and the lifter 671 is started to make the rotating arm 6 rise and rotate to reset, so as not to affect the use of the glue applicator 4.

[0057] In the initial state, the lower end of the cleaning rod 6621 slightly protrudes from the top ring 665, and the abutment ring 667 is flush with the top ring 665. At this time, the receiving tray 8 continues to rotate through the second driver 65, so that the rubber head to be cleaned on the receiving tray 8 is located below the cleaning rod 6621. The first driver 64 drives the first rotating sleeve 661 to rotate through the cooperation of the active bevel gear 641 and the driven gear 664. The first rotating sleeve 661 drives the cleaning rod 6621 to move downward under the thread cooperation. At the same time, the cleaning rod 6621 causes the top ring 665 to move downward. The rubber head is divided into a connecting portion and a needle tip portion (such as Fig.10 As shown in the figure, the diameter of the anvil 667 is equal to the inner diameter of the connecting part, the diameter of the cleaning rod 6621 is equal to the inner diameter of the needle tip, the top ring 665 will first contact the colloid in the connecting part of the rubber head to squeeze the colloid, so that the colloid in the connecting part enters the needle tip, when the top ring 665 moves to the end of the connecting part, the colloid will still remain between the top ring 665, the cleaning rod 6621 and the connecting part, and will be squeezed into a rubber cake by the pressure ring 666, and as the cleaning rod 6621 continues to move downward, the rubber cake in the connecting part will be further squeezed, and the rubber cake will squeeze the anvil 667, so that the anvil 667 moves upward, so that the rubber cake forms a concave shape, and better adheres to the pressure ring 666;

[0058] During the upward movement of the retaining ring 667, the driving wheel 6652 drives the pressing ring 666 to move downward. The pressing ring 666 transmits the force of the elastic member 6657 and the fixing plate 6656, so that the limiting plate 6653 extends out of the pressing ring 666 and inserts into the rubber cake in the connecting part. The cleaning rod 6621 continues to enter the needle tip. The colloid in the needle tip is pushed into the rubber collecting ring 83 by the cleaning rod 6621. At this time, the cleaning of the colloid in the rubber head can be completed.

[0059] After the colloid in the rubber head is cleaned, the cleaning rod 6621 rises and drives the top ring 665 to rise, and at the same time drives the rubber cake in the connection part to move out of the rubber head. When the back ring 667 contacts the fixed ring 663, it stops moving. The fixed ring 663 moves downward and heats to melt the edge of the rubber cake, so that the diameter of the rubber cake becomes larger. At this time, the top ring 665 continues to move upward, and the transmission wheel 6652 rotates under the action of the back ring 667, so that the pressure ring 666 moves upward. The pressure ring 666 drives the limit plate 6653 to move toward the pressure ring 666 through the elastic member 6657 and the fixed plate 6656, so that the pressure ring 666 is separated from the rubber cake. The separated rubber cake falls to the connection of the rubber head and blocks the entrance of the rubber head.

[0060] Finally, the holding tray 8 rotates, and when the rubber cake on the rubber head contacts the scraper 63, the rubber cake is separated from the rubber head, and the rubber head can be replaced. At the same time, the rotating disk 82 rotates with the holding tray 8 through the connecting column 81, and the rotating disk 82 drives the rubber collecting ring 83 to move under the baffle 74. At this time, the elastic push rod 741 contacts the rubber collecting ring 83, and the rubber collecting ring 83 will lift the elastic push rod 741 to store force for the elastic push rod 741. Then, after the rubber block in the rubber collecting ring 83 corresponds to the elastic push rod 741, the elastic push rod 741 releases the pressure to push the rubber block from the feed port 72 into the collection box 73.

[0061] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0062] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0063] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A glue coating device for semiconductor refrigeration sheet, comprising a workbench, characterized in that: The top of the workbench is fixedly connected to a transverse sliding frame, the transverse sliding frame is slidably matched with a longitudinal sliding frame, the longitudinal sliding frame is slidably matched with a glue applicator, and further includes: A rubber head replacement assembly is installed between the workbench and the horizontal sliding frame. The rubber head replacement assembly is used to replace the colloid in the rubber head after cleaning. The rubber head replacement assembly includes a driving unit, a rotating arm and a holding tray. The driving unit is arranged on the workbench. The rotating arm is rotatably assembled on the driving unit. An L-shaped plate is fixedly connected to the rotating arm. The holding tray is rotatably matched with the rotating arm. A plurality of positioning holes are provided on the holding tray. A cleaning unit, the cleaning unit comprising a first rotating sleeve, a guide rod and a fixed ring, the internal thread of the first rotating sleeve is matched with a cleaning rod so that the cleaning rod can move up and down, the guide rod is fixedly connected to the L-shaped plate and slidably matched with the cleaning rod so that the guide rod limits the position of the cleaning rod, the fixed ring is connected to the rotating arm, and an extrusion assembly is arranged inside the fixed ring to extrude the colloid in the rubber head into blocks; The extrusion assembly includes a top ring, which is arranged inside the fixed ring, and the top ring is slidably matched on the cleaning rod. The outer side of the top ring is slidably matched with a retaining ring, and the retaining ring corresponds to the first ring groove. A positioning groove is provided on the outer side of the top ring, and a sliding block is provided on the inner wall of the retaining ring, and the sliding block slides in the positioning groove. The top ring has an annular cavity inside, a pressure ring is slidably matched inside the annular cavity, a transmission wheel is provided between the annular cavity and the positioning groove, the circumference of the transmission wheel is in contact with the slider and the pressure ring respectively, a sliding groove is provided on both sides of the annular cavity, a limit plate is slidably matched inside the sliding groove, the limit plate passes through the bottom of the annular cavity and extends to the outside of the top ring, a fixed plate is slidably matched above the limit plate, and an elastic member is fixedly connected between the fixed plate and the pressure ring; The slide groove is inclined, and the shape of the limit plate is adapted to the sliding of the slide groove; A first limiting groove is formed on the outer side of the cleaning rod, and a guide block is fixedly connected to the inner wall of the top ring. The guide block is slidably fitted in the first limiting groove.

2. The gluing device for semiconductor refrigeration sheet according to claim 1, characterized in that: The first ring groove has an electric contact plate, and an electric heating ring is provided below the abutment ring, and the electric heating ring is used in conjunction with the electric contact plate.

3. The gluing device for semiconductor refrigeration sheet according to claim 1, characterized in that: A reciprocating thread groove is provided on the inner wall of the first rotating sleeve, and a first protrusion which cooperates with the reciprocating thread groove is fixedly connected to the upper end of the cleaning rod.

4. The gluing device for semiconductor cooling sheet according to claim 1, characterized in that: The cleaning rod has a cavity with a guide groove inside. The lower end of the guide rod is fixedly connected with a second protrusion, which is slidably matched with the guide groove. The guide groove is divided into a straight groove and a spiral groove, and the spiral groove is located above the straight groove.

5. The glue coating device for semiconductor cooling sheet according to claim 1, characterized in that: A fixed plate is provided below the containing plate, and the fixed plate is connected to the bottom of the rotating arm. A connecting column is fixedly connected to the bottom of the containing plate, and a rotating plate is fixedly connected to the end of the connecting column away from the containing plate. The rotating plate is rotatably fitted on the fixed plate, and a plurality of rubber collecting rings are fixedly connected to the circumference of the rotating plate. The plurality of rubber collecting rings correspond to a plurality of positioning holes one by one. A second annular groove is provided on the fixed plate, and the rubber collecting ring slides in the second annular groove.

6. The gluing device for semiconductor cooling sheet according to claim 5, characterized in that: A feed port is provided on the second annular groove, a baffle plate is fixedly connected above the fixed disk, the baffle plate is located above the feed port, an elastic push rod is installed on the baffle plate, the elastic push rod passes through the baffle plate and extends to the feed port, a collection box is fixedly connected below the fixed disk, the collection box corresponds to the feed port.

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