PTC (Positive Temperature Coefficient) large and small sheet laminating machine

Abstract

The invention discloses a PTC (Positive Temperature Coefficient) large and small sheet combining and pressing machine which comprises a large aluminum sheet feeding mechanism 1, a small aluminum sheet feeding mechanism, a large aluminum sheet picking and placing mechanism, a small aluminum sheet picking and placing mechanism, a combining and pressing mechanism, a primary righting mechanism and a secondary righting mechanism. The large aluminum sheet pick-and-place mechanism and the small aluminum sheet pick-and-place mechanism are arranged on the two sides of the pressing mechanism and can transfer the large aluminum sheets or the small aluminum sheets on the large aluminum sheet pick-and-place mechanism and the small aluminum sheet pick-and-place mechanism to the pressing mechanism, and the pressing mechanism conducts pressing and stacking on the large aluminum sheets or the small aluminum sheets. The device is reasonable in structural design, large aluminum sheets and small aluminum sheets are correspondingly conveyed to the large aluminum sheet picking and placing mechanism and the small aluminum sheet picking and placing mechanism through the large aluminum sheet feeding mechanism and the small aluminum sheet feeding mechanism, then the large aluminum sheets or the small aluminum sheets are transferred to the pressing mechanism through the large aluminum sheet picking and placing mechanism and the small aluminum sheet picking and placing mechanism, and then the large aluminum sheets and the small aluminum sheets are pressed, stacked and assembled on heating strips through the pressing mechanism. The radiating fins of two different specifications and sizes are assembled on the same heating strip, different production requirements are met, the assembling efficiency is high, the assembling effect is good, and the product quality is effectively guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of PTC heater manufacturing equipment, and in particular to a PTC large and small sheet pressing machine. Background Art

[0002] PTC heaters, also called PTC heating elements, are made of PTC ceramic heating elements and aluminum tubes, and are in strip shape. This type of PTC heater has the advantages of low thermal resistance and high heat exchange efficiency. It is an automatic constant temperature and energy-saving electric heater. The outstanding feature is safety performance. Under any application conditions, it will not produce the "reddening" phenomenon on the surface of electric heating tube heaters, which will cause safety hazards such as burns and fires.

[0003] In order to facilitate the heat dissipation of the heating strip, a large number of heat sinks are usually inserted into the heating strip. The specific manufacturing process is to provide a plug hole for the heating strip to be inserted on the heat sink, and the plug hole and the heating strip are interference fit. However, the current automation level of the heat sink and the heating strip is not high, and most of them are assembled manually, which is time-consuming and labor-intensive. Not only is the work efficiency low, but it also requires long-term and high-intensity repetition of the same assembly action, which is labor-intensive.

[0004] To this end, the applicant applied for a utility model named "PTC Heater Press Machine" on July 15, 2022, with patent number "CN202221816465.0", which discloses a PTC heater press machine, which includes a frame, a vibrating loading tray, a feeding rail, a loading mechanism, a heat sink pick-up and place mechanism, a column, a floating pressing mechanism and a heating strip clamping mechanism. The vibrating loading tray vibrates the heat sink placed therein and arranges them neatly and sends them to the feeding rail, which then sends them one by one to the position of the loading mechanism. The loading mechanism is then pushed to the predetermined loading position for the heat sink pick-up and placement mechanism to grab them. The heat sink pick-up and placement mechanism moves the grabbed heat sink to the position above the heating strip and slightly inserts the heating strip into the socket of the heat sink. Finally, the floating pressing mechanism moves downward to press the heat sink to the predetermined assembly position of the heating strip. Although it can replace manual assembly of the heating strip and the heat sink, it is only suitable for the assembly of heat sinks of one specification and size, and has a narrow scope of application. However, sometimes, it is necessary to assemble heat sinks of two different specifications and sizes on the same heating strip, which cannot meet the production assembly requirements. Summary of the invention

[0005] In view of the above-mentioned shortcomings, the object of the present invention is to provide a PTC large and small sheet pressing machine with a reasonable structural design and capable of assembling two heat sinks of different specifications and sizes on the same heating strip.

[0006] To achieve the above purpose, the technical solution provided by the present invention is: A PTC large and small sheet pressing machine comprises a large aluminum sheet feeding mechanism, a small aluminum sheet feeding mechanism, a large aluminum sheet picking and placing mechanism, a small aluminum sheet picking and placing mechanism and a pressing mechanism. The large aluminum sheet picking and placing mechanism and the small aluminum sheet picking and placing mechanism are arranged on both sides of the pressing mechanism, and can transfer the large aluminum sheets or small aluminum sheets thereon to the pressing mechanism, and the pressing mechanism will press and stack them. The large aluminum sheet feeding mechanism is located on one side of the large aluminum sheet picking and placing mechanism, and can transport large aluminum sheets to the large aluminum sheet picking and placing mechanism. The small aluminum sheet feeding mechanism is located on one side of the small aluminum sheet picking and placing mechanism, and can transport small aluminum sheets to the small aluminum sheet picking and placing mechanism.

[0007] As a preferred solution of the present invention, the small aluminum sheet feeding mechanism includes a small aluminum sheet vibrating feeding plate, a small aluminum sheet feeding rail, a pushing mechanism and a swing plate pushing mechanism. One end of the small aluminum sheet feeding rail is connected to the small aluminum sheet vibrating feeding plate, and the other end extends to the position of the pushing mechanism. The pushing mechanism pushes the small aluminum sheets conveyed by the small aluminum sheet feeding rail to the swing plate pushing mechanism one by one.

[0008] As a preferred solution of the present invention, the pushing mechanism includes a pushing seat, a pushing cylinder and a pushing rod, the pushing seat is provided with a feed trough and a loading trough perpendicular to the feed trough, one end of the small aluminum sheet feeding rail is connected to the feed trough, the front end of the pushing rod extends into the loading trough, the pushing cylinder is arranged on the pushing seat and connected to the tail end of the pushing rod.

[0009] As a preferred solution of the present invention, the swing plate pushing mechanism includes a fixed seat, a slide rail, a pushing plate, a ball screw pair and a pushing motor, the slide rail is arranged on the fixed seat, the pushing plate is movably arranged on the slide rail through a slider, the pushing motor drives the pushing plate to reciprocate on the slide rail through a ball screw pair, and a plurality of sheet slots for placing small aluminum sheets are arranged on one side of the push plate close to the loading trough.

[0010] As a preferred solution of the present invention, the small aluminum sheet picking and placing mechanism includes a bracket, a lateral moving module, a lifting moving module, a pick and place arm and a plurality of pneumatic fingers arranged side by side on the pick and place arm, the lateral moving module is arranged on the bracket, the lifting moving module is arranged on the lateral moving module, and the pick and place arm is arranged on the lifting moving module.

[0011] As a preferred embodiment of the present invention, the pressing mechanism includes a pillar, a height adjustment seat, a heat sink jig, a pressure seat, a sheet pressing jig, a lifting ball screw pair and a lifting motor. A lifting guide rail is provided on the front side of the pillar. The height adjustment seat is movably arranged at the lower position of the lifting guide rail through a slider. The pressure seat is movably arranged at the upper part of the lifting guide rail through a slider. The lifting motor is arranged on the pillar and can drive the pressure seat to move up and down relative to the height adjustment seat through a lifting ball screw pair. The heat sink jig is arranged on the upper surface of the height adjustment seat, and the sheet pressing jig is arranged on the bottom surface of the pressure seat.

[0012] As a preferred solution of the present invention, it also includes a primary righting mechanism, which includes a righting seat, a transverse cylinder, a transverse shifting plate, an opening and closing device, a front armrest and a rear armrest. The righting seat is arranged on the back of the pillar through a height adjustment plate, and the transverse shifting plate is slidably arranged on the righting seat through an X slide rail. The transverse cylinder is arranged on the righting seat and can drive the transverse shifting plate to reciprocate on the X slide rail. The transverse shifting plate is provided with a Y slide rail. The front armrest and the rear armrest are movably arranged on the Y slide rail and are driven by the opening and closing device to relatively separate or close. The opening and closing device includes an opening and closing cylinder, a left rack, a right rack and a synchronous gear. The left rack and the right rack are arranged opposite to each other at intervals, and the left rack is fixed to the bottom surface of the front armrest, and the right rack is fixed to the bottom surface of the rear armrest. The synchronous gear is arranged on the lateral shift plate through a rotating shaft corresponding to the position between the left rack and the right rack. The synchronous gear is meshed with the left rack and the right rack. The piston rod of the opening and closing cylinder is connected to the rear armrest. The front armrest and the rear armrest are both provided with toothed recesses that match the shape of the heating strip. The toothed recesses are provided with spring plungers to improve the clamping and positioning effect. The heating strip is positioned by a one-time straightening mechanism, which is convenient and accurate for assembly with large and small aluminum sheets.

[0013] As a preferred solution of the present invention, it also includes a secondary righting mechanism, which includes a left righting block, a right righting block, a left driving device and a right driving device. A left support arm and a right support arm are provided on the righting seat corresponding to the two sides of the pillar. The left driving device and the right driving device are provided on the left support arm and the right support arm respectively. The left right support block and the right support block are provided on the left driving device and the right driving device respectively. The left right support block and the right support block are provided with a concave position that matches the shape of the heating strip. The heating strip is positioned by the secondary righting mechanism to prevent the heating strip from shaking left and right.

[0014] As a preferred solution of the present invention, the heat dissipation strip jig includes a base, a fixed splint, a movable splint, a push frame and a jig cylinder, the fixed splint is fixed on the base, a V-shaped socket is provided on the fixed splint, an inclined guide groove is provided on the bottom surface of the movable splint, and an inclined guide wheel matched with the inclined guide groove is provided on the base, a transverse long hole is provided at the tail of the movable splint, one end of the push frame is fixed to the piston rod of the jig cylinder, and the other end is provided with a transverse guide wheel matched with the transverse long hole, and a pointed head is provided at one end of the movable splint facing the V-shaped socket.

[0015] The beneficial effects of the present invention are as follows: the present invention has a reasonable structural design, and the large and small aluminum sheet feeding mechanisms respectively transport large aluminum sheets and small aluminum sheets to the large and small aluminum sheet picking and placing mechanisms, and then the large and small aluminum sheet picking and placing mechanisms transfer the large aluminum sheets or small aluminum sheets to the pressing mechanism, and then the large and small aluminum sheets are pressed and stacked and assembled on the heating strip by the pressing mechanism, so that two heat sinks of different specifications and sizes can be assembled on the same heating strip to meet different production needs, and the assembly efficiency is high, the assembly effect is good, and the product quality is effectively guaranteed.

[0016] The present invention is further described below in conjunction with the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structural schematic diagram of the present invention.

[0018] Figure 2 It is a structural schematic diagram of the small aluminum sheet feeding mechanism of the present invention.

[0019] Figure 3 It is a structural schematic diagram of the material pushing mechanism in the present invention.

[0020] Figure 4 It is a structural schematic diagram of the small aluminum sheet picking and placing mechanism of the present invention.

[0021] Figure 5 It is a structural schematic diagram of the large aluminum sheet feeding mechanism in the present invention.

[0022] Figure 6 It is a structural schematic diagram of the large aluminum sheet picking and placing mechanism in the present invention.

[0023] Figure 7 It is a structural schematic diagram of the pressing mechanism in the present invention.

[0024] Figure 8 It is a structural schematic diagram of the height-adjusting seat in the present invention.

[0025] Fig. 9 It is a schematic diagram of the exploded structure of the heat dissipation strip jig in the present invention.

[0026] Fig.10It is a structural schematic diagram of the movable splint in the present invention.

[0027] Fig.11 It is a three-dimensional structural schematic diagram of the primary righting mechanism in the present invention.

[0028] Fig.12 It is a schematic diagram of the exploded structure of the primary righting mechanism in the present invention.

[0029] Fig.13 It is a structural schematic diagram of the secondary righting mechanism in the present invention. Implementation

[0030] For example, see Figures 1 to 13 The present embodiment provides a PTC large and small sheet pressing machine, which includes a large aluminum sheet feeding mechanism 1, a small aluminum sheet feeding mechanism 2, a large aluminum sheet picking and placing mechanism 3, a small aluminum sheet picking and placing mechanism 4, a pressing mechanism 5, a primary straightening mechanism 6 and a secondary straightening mechanism 7.

[0031] The large aluminum sheet picking and placing mechanism 3 and the small aluminum sheet picking and placing mechanism 4 are arranged on both sides of the pressing mechanism 5 .

[0032] The small aluminum sheet feeding mechanism 2 is used to convey the small aluminum sheet 8 to the small aluminum sheet picking and placing mechanism 4. Specifically, the small aluminum sheet feeding mechanism 2 comprises a small aluminum sheet vibrating feeding tray 21, a small aluminum sheet feeding rail 22, a pushing mechanism 23 and a swing plate pushing mechanism 24. One end of the small aluminum sheet feeding rail 22 is connected to the small aluminum sheet vibrating feeding tray 21, and the other end extends to the position of the pushing mechanism 23. The pushing mechanism 23 pushes the small aluminum sheets conveyed by the small aluminum sheet feeding rail 22 to the swing plate pushing mechanism 24 one by one. The pushing mechanism 23 includes a pushing seat 231, a pushing cylinder 232 and a pushing rod 233. The pushing seat 231 is provided with a feeding trough and a loading trough perpendicular to the feeding trough. One end of the small aluminum sheet feeding rail 22 is connected to the feeding trough. The front end of the pushing rod 233 extends into the loading trough. The pushing cylinder 232 is arranged on the pushing seat 231 and connected to the rear end of the pushing rod 233. Preferably, the piston rod of the pushing cylinder 232 is connected to the rear end of the pushing rod 233 through a hinge shaft, which reduces the requirements for assembly straightness and allows the pushing rod 233 to move flexibly and smoothly in the loading trough. The swing plate pushing mechanism 24 includes a fixed seat, a slide rail, a pushing plate 241, a ball screw pair and a pushing motor. The slide rail is set on the fixed seat. The pushing plate 241 is movably set on the slide rail through a slider. The pushing motor drives the pushing plate 241 to reciprocate on the slide rail through a ball screw pair. A plurality of sheet slots 242 for placing small aluminum sheets 8 are arranged on one side of the pushing plate 241 close to the loading trough.

[0033] The small aluminum sheet picking and placing mechanism 4 is used to transfer the small aluminum sheet 8 on the sheet slot 242 to the pressing mechanism 5. Specifically, the small aluminum sheet picking and placing mechanism 4 includes a bracket 41, a lateral moving module 42, a lifting and moving module 43, a picking and placing arm 44, and a plurality of pneumatic fingers 45 arranged side by side on the picking and placing arm 44. In this embodiment, the number of the pneumatic fingers 45 is three, so as to realize the transfer of three small aluminum sheets of small specifications to the small aluminum sheet assembly mechanism. In other embodiments, the number of the pneumatic fingers 45 can also be four or more. In order to realize the transfer of more small aluminum sheets of small specifications to the small aluminum sheet assembly mechanism at one time, the work efficiency is improved. The lateral moving module 42 is arranged on the bracket 41, the lifting and moving module 43 is arranged on the lateral moving module 42, and the picking and placing arm 44 is arranged on the lifting and moving module 43.

[0034] The large aluminum sheet feeding mechanism 1 is used to convey the large aluminum sheet 9 to the large aluminum sheet picking and placing mechanism 3. Specifically, the large aluminum sheet feeding mechanism 1 includes a large aluminum sheet vibrating feeding tray 11, a large aluminum sheet feeding rail 12 and a pushing mechanism 13. One end of the large aluminum sheet feeding rail 12 is connected to the large aluminum sheet vibrating feeding tray 11, and the other end extends to the position of the pushing mechanism 13. The position of the pushing mechanism 13 includes a loading seat 131, a pushing cylinder 132 and a pushing block 133. The loading seat 131 is arranged at the side position of the other end of the large aluminum sheet feeding rail 12. The loading seat 131 is provided with a limiting groove for placing the large aluminum sheet 9. The pushing cylinder 132 is arranged at the other side position of the feeding rail corresponding to the position of the loading seat 131. The pushing block 133 is arranged on the piston rod of the pushing cylinder 132. When the piston rod of the pushing cylinder 132 is extended, the pushing block 133 pushes the large aluminum sheet on the large aluminum sheet feeding rail 12 to the limiting groove of the loading seat 131, so that the large aluminum sheet picking and placing mechanism 3 can grab the large aluminum sheet 9.

[0035] The large aluminum sheet picking and placing mechanism 3 includes a bracket 31, a base plate 32, a horizontal slide rail 33, a horizontal slide seat 34, a vertical slide rail 35, a vertical slide seat 36, a guide plate 37, a guide block 38, a moving arm 39, a telescopic device 310, a pneumatic gripper 311, a swing arm 312 and a reduction motor. The guide plate 37 is arranged on the base plate 32 and is provided with an n-shaped guide groove. The reduction motor is arranged on the back side of the base plate 32, and the driving shaft of the reduction motor extends from the lower position of the guide plate 37. One end of the swing arm 312 is fixed on the driving shaft of the reduction motor, and the other end of the swing arm 312 is provided with a long slide hole. The guide block 38 is arranged on the moving arm 39 and is provided with a sliding shaft. The sliding shaft passes through the long slide hole and cooperates with the n-shaped guide groove. Preferably, a pulley is provided on the sliding shaft to further improve the sliding smoothness. The base plate 32 is arranged on the upper part of the bracket 31, the horizontal slide rail 33 is arranged on the base plate 32, the vertical slide seat 36 is arranged on the horizontal slide rail 33 through the horizontal slide seat 34, the moving arm 39 is movably arranged on the vertical slide seat 36 through the vertical slide rail 35, the telescopic device 310 is arranged on the moving arm 39, and the pneumatic gripper 311 is arranged on the telescopic device 310. After the pneumatic gripper 311 clamps the large aluminum sheet 9 located on the limiting groove of the loading seat 131, the reduction motor rotates counterclockwise to drive the moving arm 39 to swing from left to right. The guide block 38 pushes the moving arm 39 upward under the guidance of the left vertical part of the n-shaped guide slot; when the guide block 38 moves to the middle horizontal part of the n-shaped guide slot with the swing of the moving arm 39, the moving arm 39 is pushed to move horizontally from left to right; then, when the guide block 38 moves to the right vertical part of the n-shaped guide slot 371 with the swing of the moving arm 39, the moving arm 39 is pushed downward to place the large aluminum sheet 9 on the heating strip 10.

[0036] The pressing mechanism 5 is used to press and stack the large aluminum sheet 9 and the small aluminum sheet 8 conveyed by the large aluminum sheet picking and placing mechanism 3 and the small aluminum sheet picking and placing mechanism 4 on the same heating strip.

[0037] The pressing mechanism 5 includes a pillar 51, a height adjustment seat 52, a heat sink fixture 53, a pressure seat 54, a tablet pressing fixture 55, a lifting ball screw pair 56 and a lifting motor 57. A lifting guide rail is provided on the front of the pillar 51. The height adjustment seat 52 is movably arranged at the lower position of the lifting guide rail through a slider. The height adjustment seat 52 can be adjusted in height through a height adjustment mechanism 58. The height adjustment mechanism 58 includes an adjustment seat 581, a rack 582, a gear and an adjustment hand wheel 583. The rack 582 is arranged on the pillar 51. The adjustment seat 581 is arranged on the height adjustment seat 52 at a position corresponding to the rack 582. The adjustment hand wheel 583 is arranged on the adjustment seat 581. The gear is arranged on the adjustment hand wheel 583 and meshes with the rack 582. The height of the height adjustment seat 52 is adjusted accordingly by turning the adjustment hand wheel 583 for reverse or forward rotation.

[0038] The heat dissipation strip jig 53 is arranged on the upper surface of the height adjustment seat 52. Specifically, the heat dissipation strip jig 53 comprises a base 531, a fixed clamping plate 532, a movable clamping plate 533, a push frame 534 and a jig cylinder 535. The fixed clamping plate 532 is fixed on the base 531, and a V-shaped socket 5321 is provided on the fixed clamping plate 532. The bottom surface of the movable clamping plate 533 is provided with an inclined guide groove 5331, and an inclined guide wheel 536 adapted to the inclined guide groove 5331 is provided on the base 531. A transverse long hole 5332 is provided at the tail of the movable clamping plate 533. One end of the push frame 534 is fixed on the piston rod of the jig cylinder 535, and the other end is provided with a transverse guide wheel 537 adapted to the transverse long hole 5332. The end of the movable clamping plate 533 facing the V-shaped socket 5321 is provided with a pointed head 5333. During adjustment, through the cooperation between the inclined guide wheel 536 and the inclined guide groove 5331 and the cooperation between the transverse guide wheel 537 and the transverse long hole 5332, the fixture cylinder 535 pushes the movable clamping plate 533 through the push frame 534 and moves horizontally at the same time, that is, when the pointed head 5333 extends into the V-shaped socket 5321, it also moves horizontally, thereby clamping and pressing the heating strip 10 and improving the clamping effect.

[0039] The pressure seat 54 is movably arranged on the upper part of the lifting guide rail through a slider, the lifting motor 57 is arranged on the pillar 51, and can drive the pressure seat 54 to move up and down relative to the height adjustment seat 52 through the lifting ball screw pair 56, and the pressing fixture 55 is arranged on the bottom surface of the pressure seat 54.

[0040] The primary straightening mechanism 6 includes a straightening seat 61, a lateral movement cylinder 62, a lateral movement plate 63, an opening and closing device 64, a front armrest 65 and a rear armrest 66. The straightening seat 61 is arranged on the back of the pillar 51 through a height adjustment plate 67. The lateral movement plate 63 is slidably arranged on the straightening seat 61 through an X slide rail. The lateral movement cylinder 62 is arranged on the straightening seat 61 and can drive the lateral movement plate 63 to reciprocate on the X slide rail. The lateral movement plate 63 is provided with a Y slide rail. The front armrest 65 and the rear armrest 66 are movably arranged on the Y slide rail and are driven by the opening and closing device 64 to relatively separate or close. The opening and closing device 64 includes an opening and closing cylinder 641, a left rack 642, The right rack 643 and the synchronous gear 644, the left rack 642 and the right rack 643 are arranged opposite to each other at intervals, and the left rack 642 is fixed to the bottom surface of the front armrest 65, and the right rack 643 is fixed to the bottom surface of the rear armrest 66. The synchronous gear 644 is arranged on the horizontal shift plate 63 through a rotating shaft corresponding to the position between the left rack 642 and the right rack 643, and the synchronous gear 644 is meshed with the left rack 642 and the right rack 643. The piston rod of the opening and closing cylinder 641 is connected to the rear armrest 66. The front armrest 65 and the rear armrest 66 are both provided with toothed recesses that match the shape of the heating strip 10, and the toothed recesses are provided with spring plungers 68 to improve the clamping and positioning effect. The heating strip 10 is positioned by the primary straightening mechanism 6, which is convenient and accurate to assemble with large and small aluminum sheets.

[0041] The secondary straightening mechanism 7 includes a left supporting block 71, a right supporting block 72, a left driving device 73 and a right driving device 74. A left support arm 75 and a right support arm 76 are provided on the straightening seat 61 corresponding to the positions on both sides of the pillar 51. The left driving device 73 and the right driving device 74 are provided on the left support arm 75 and the right support arm 76 respectively. The left supporting block 71 and the right supporting block 72 are provided on the left driving device 73 and the right driving device 74 respectively. The left supporting block 71 and the right supporting block 72 are provided with concave positions adapted to the shape of the heating strip 10. The heating strip 10 is positioned by the secondary straightening mechanism 7 to prevent the heating strip 10 from shaking left and right.

[0042] During operation, the large aluminum sheet is conveyed to the large aluminum sheet pick-up and placement mechanism 3 through the large aluminum sheet feeding mechanism 1, and the small aluminum sheet 8 is conveyed to the small aluminum sheet pick-up and placement mechanism 4 through the small aluminum sheet feeding mechanism 2. The front armrest 65 and the rear armrest 66 of the primary straightening mechanism 6 are closed to achieve the front and rear limit of the heating strip 10. In order to improve the positioning effect of the heating strip 10, the left support block 71 and the right support block 72 of the secondary straightening mechanism 7 are closed to achieve the left and right limit of the heating strip 10. The heating strip 10 is prevented from shaking in the front, back, left, and right directions, thereby improving the positioning effect. Then the large aluminum sheet is transferred to the pressing mechanism 5 by the large aluminum sheet pick-up and placement mechanism 3, specifically so that the jack of the large aluminum sheet 9 is aligned with the heating strip 10 and placed on the upper end of the heating strip 10. Then, the lifting motor 57 drives the pressing seat 54 through the lifting ball screw pair 56 to drive the pressing fixture 55 downward, so as to press the large aluminum sheet 9 down to a predetermined position, thereby assembling the large aluminum sheet 9 and the heating strip 10.

[0043] When the small aluminum sheet 8 needs to be placed, the small aluminum sheet picking and placing mechanism 4 transfers the small aluminum sheet 8 to the pressing mechanism 5, specifically, the insertion hole of the small aluminum sheet 8 is aligned with the heating strip 10 and placed on the upper end of the heating strip 10. Then, the lifting motor 57 drives the pressing seat 54 through the lifting ball screw pair 56 to drive the pressing fixture 55 downward, so as to press the small aluminum sheet 8 down to the predetermined position, so as to assemble the small aluminum sheet 8 with the heating strip 10.

[0044] By interactively controlling the working states of the small aluminum sheet picking and placing mechanism 4 and the large aluminum sheet feeding mechanism 1, the large aluminum sheet 9 or the small aluminum sheet 8 can be transferred to the pressing mechanism 5 accordingly, and then the large aluminum sheet 9 and the small aluminum sheet 8 are pressed and stacked by the pressing mechanism 5 and assembled on the heating strip 10, so that two heat sinks of different specifications and sizes can be assembled on the same heating strip, and a PTC heater with two heat sinks of different specifications and sizes can be obtained, which has high assembly efficiency and saves time and effort.

[0045] According to the disclosure and teaching of the above description, those skilled in the art to which the present invention belongs may also make changes and modifications to the above embodiments. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should also fall within the protection scope of the claims of the present invention. In addition, although some specific terms are used in this specification, these terms are only for the convenience of description and do not constitute any limitation to the present invention. The use of the same or similar devices is within the protection scope of the present invention.

Claims

1. A PTC large and small sheet pressing machine, characterized in that: It includes a large aluminum sheet feeding mechanism, a small aluminum sheet feeding mechanism, a large aluminum sheet picking and placing mechanism, a small aluminum sheet picking and placing mechanism and a pressing mechanism. The large aluminum sheet picking and placing mechanism and the small aluminum sheet picking and placing mechanism are arranged on both sides of the pressing mechanism, and can transfer the large aluminum sheets or small aluminum sheets thereon to the pressing mechanism, and the pressing mechanism will press and stack them. The large aluminum sheet feeding mechanism is located on one side of the large aluminum sheet picking and placing mechanism, and can transport large aluminum sheets to the large aluminum sheet picking and placing mechanism. The small aluminum sheet feeding mechanism is located on one side of the small aluminum sheet picking and placing mechanism, and can transport small aluminum sheets to the small aluminum sheet picking and placing mechanism.

2. The PTC large and small sheet pressing machine according to claim 1, characterized in that: The small aluminum sheet feeding mechanism includes a small aluminum sheet vibrating feeding plate, a small aluminum sheet feeding rail, a pushing mechanism and a swing plate pushing mechanism. One end of the small aluminum sheet feeding rail is connected to the small aluminum sheet vibrating feeding plate, and the other end extends to the position of the pushing mechanism. The pushing mechanism pushes the small aluminum sheets conveyed by the small aluminum sheet feeding rail to the swing plate pushing mechanism one by one.

3. The PTC large and small sheet pressing machine according to claim 2, characterized in that: The pushing mechanism includes a pushing seat, a pushing cylinder and a pushing rod. The pushing seat is provided with a feed trough and a loading trough perpendicular to the feed trough. One end of the small aluminum sheet feeding rail is connected to the feed trough. The front end of the pushing rod extends into the loading trough. The pushing cylinder is arranged on the pushing seat and connected to the tail end of the pushing rod.

4. The PTC large and small sheet pressing machine according to claim 3, characterized in that: The piston rod of the push cylinder is connected to the tail end of the push rod through a hinge shaft.

5. The PTC large and small sheet pressing machine according to claim 3, characterized in that: The swing plate pushing mechanism includes a fixed seat, a slide rail, a pushing plate, a pushing ball screw pair and a pushing motor. The slide rail is arranged on the fixed seat. The pushing plate is movably arranged on the slide rail through a slider. The pushing motor drives the pushing plate to reciprocate on the slide rail through a pushing ball screw pair. A plurality of sheet slots for placing small aluminum sheets are arranged on one side of the pushing plate close to the loading trough.

6. The PTC large and small sheet pressing machine according to claim 3, characterized in that: The small aluminum sheet picking and placing mechanism includes a bracket, a lateral moving module, a lifting moving module, a picking and placing arm and a plurality of pneumatic fingers arranged side by side on the picking and placing arm. The lateral moving module is arranged on the bracket, the lifting moving module is arranged on the lateral moving module, and the picking and placing arm is arranged on the lifting moving module.

7. The PTC large and small sheet pressing machine according to claim 1, characterized in that: The pressing mechanism includes a pillar, a height adjustment seat, a heat sink jig, a pressure seat, a tablet pressing jig, a lifting ball screw pair and a lifting motor. A lifting guide rail is provided on the front of the pillar. The height adjustment seat is movably arranged at the lower position of the lifting guide rail through a slider. The pressure seat is movably arranged at the upper part of the lifting guide rail through a slider. The lifting motor is arranged on the pillar and can drive the pressure seat to move up and down relative to the height adjustment seat through the lifting ball screw pair. The heat sink jig is arranged on the upper surface of the height adjustment seat, and the tablet pressing jig is arranged on the bottom surface of the pressure seat.

8. The PTC large and small sheet pressing machine according to claim 7, characterized in that: It also includes a primary righting mechanism, which includes a righting seat, a transverse cylinder, a transverse shifting plate, an opening and closing device, a front armrest and a rear armrest. The righting seat is arranged on the back of the pillar through a height adjustment plate. The transverse shifting plate is slidably arranged on the righting seat through an X slide rail. The transverse cylinder is arranged on the righting seat and can drive the transverse shifting plate to reciprocate on the X slide rail. The transverse shifting plate is provided with a Y slide rail. The front armrest and the rear armrest are movably arranged on the Y slide rail and are driven by the opening and closing device to relatively separate or close. The closing device includes an opening and closing cylinder, a left rack, a right rack and a synchronous gear. The left rack and the right rack are arranged opposite to each other at an interval, and the left rack is fixed to the bottom surface of the front armrest, and the right rack is fixed to the bottom surface of the rear armrest. The synchronous gear is arranged on the transverse shift plate through a rotating shaft corresponding to the position between the left rack and the right rack. The synchronous gear is meshed with the left rack and the right rack. The piston rod of the opening and closing cylinder is connected to the rear armrest. The front armrest and the rear armrest are provided with toothed recesses that are compatible with the shape of the heating strip, and a spring plunger is provided on the toothed recess.

9. The PTC large and small sheet pressing machine according to claim 8, characterized in that: It also includes a secondary righting mechanism, which includes a left supporting block, a right supporting block, a left driving device and a right driving device. A left support arm and a right support arm are provided on the righting seat corresponding to the two sides of the pillar. The left driving device and the right driving device are respectively arranged on the left support arm and the right support arm. The left supporting block and the right supporting block are respectively arranged on the left driving device and the right driving device. The left supporting block and the right supporting block are provided with recesses that are compatible with the shape of the heating strip.

10. The PTC large and small sheet pressing machine according to claim 7, characterized in that: The heat dissipation strip jig includes a base, a fixed splint, a movable splint, a push frame and a jig cylinder. The fixed splint is fixed on the base, a V-shaped socket is provided on the fixed splint, an inclined guide groove is provided on the bottom surface of the movable splint, and an inclined guide wheel matched with the inclined guide groove is provided on the base, a transverse long hole is provided at the tail of the movable splint, one end of the push frame is fixed to the piston rod of the jig cylinder, and the other end is provided with a transverse guide wheel matched with the transverse long hole, and a pointed head is provided at one end of the movable splint facing the V-shaped socket.

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