An internal surface sprayer for coaxial through-hole parts

Abstract

The application belongs to the technical field of part spraying equipment, and particularly relates to an inner surface sprayer for coaxial through-hole parts, which comprises a vibrating disc, a temperature box with a rectangular inner cross section and a strip-shaped overall shape, and a part inlet at one end of the temperature box, wherein the output end of the vibrating disc is communicated with the part inlet of the temperature box, the width of the temperature box is equal to the width of the output end of the vibrating disc, an inner surface sprayer and a part recognition device are arranged in the temperature box in cooperation, a signal output end of the part recognition device is connected with a controller, a signal output end of the controller is connected with a solution sprayer, a solution spraying end of the solution sprayer is arranged with the inner surface sprayer, and a part output device is arranged on the temperature box, so that the problem that some substances in the inner surface gap cannot be shaken out and form accumulation and uneven spraying after being shaken by the traditional method of spraying the inner surface of parts is solved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of inner wall spraying equipment of parts, and particularly relates to an inner surface sprayer for coaxial through-hole parts. BACKGROUND

[0002] After the production of the part provided with the coaxial through hole is completed, in order to improve the service life of the inner surface of the part, a series of treatments are needed. However, in the actual assembly process, due to space, stress points and other reasons, during the installation and cooperation process, the phenomenon of failure caused by uneven internal spraying occurs. In view of the common problems in the market, the inner wall of the part can be treated, and the effect is very obvious. However, the actual situation is that the quantity of the part is very large, and about 2 million pieces per year need to be treated. The traditional way is to soak the part (at most 40 pieces at a time, and the larger the size, the fewer the quantity), so that the inner wall is fully contacted. However, the outer surface of the part is not allowed to have the substance, and needs to be treated by a high-speed spinning dryer. Then, the surface of the part is wiped by manual towel, and the quantity treated at a time is in the unit of ten thousand. At the same time, there is a probability that part of the substance in the gap of the inner wall cannot be shaken out and forms accumulation after spinning, causing uneven spraying of the inner wall, leading to uneven stress and rising friction after assembly, which is not allowed. The above problems need to be solved urgently. SUMMARY

[0003] The application aims at the shortcomings of the prior art, adopts a vibration disc, an inner surface sprayer arranged in a temperature box and a part recognition device, and designs an inner surface sprayer for coaxial through-hole parts, which can say goodbye to the soaking method for the inner wall spraying of the part, so that the spinning dryer is not needed for treating the part, and the problem that part of the substance in the gap of the inner wall cannot be shaken out and forms accumulation after spinning is solved.

[0004] In order to achieve the above-mentioned purpose, the following technical scheme is adopted:

[0005] An inner surface sprayer for coaxial through-hole parts, comprising a vibration disc, a temperature box with a rectangular inner cross section and a strip-shaped whole shape, one end of the temperature box being a part inlet, an output end of the vibration disc being communicated with the part inlet of the temperature box, the width of the temperature box being equal to the width of the output end of the vibration disc, the temperature box being provided with an inner surface sprayer and a part recognition device which cooperate with each other, a signal output end of the part recognition device being connected with a controller, a signal output end of the controller being connected with a solution sprayer, a solution spraying end of the solution sprayer being provided with the inner surface sprayer, and a part output device being arranged on the temperature box.

[0006] Further, the part inlet is directly connected to the output end of the vibration disc, the inner surface sprayer is a spray probe, the spray probe is arranged on the inner top wall of the temperature box, the part recognition device is arranged on the inner bottom wall of the temperature box directly below the spray probe, and the part recognition device is connected to the controller.

[0007] Further, the part recognition device comprises a baffle and an induction sensor, the sensor is arranged on the inner bottom wall of the temperature box directly below the spray probe, the inner bottom wall of the temperature box is provided with a containing groove on the side away from the vibration disc, the baffle is arranged in the containing groove through a lifting device, and a signal input end of the lifting device is connected to a signal output end of the controller.

[0008] Further, the part output device is a part output port, the part output port is arranged at the end of the temperature box away from the part inlet, and the projection of the part output port on the cross section of the temperature box coincides with the projection of the part inlet on the cross section of the temperature box.

[0009] As another preferred mode, the inner surface sprayer is a spray pipe, one spray pipe is coaxially arranged in the temperature box, a plurality of atomizing holes are arranged on the circumferential surface of the spray pipe, the end of the spray pipe close to the vibration disc is lower than the inner bottom wall of the output end of the vibration disc, the width of the projection of the gap between the end of the spray pipe close to the vibration disc and the inner bottom wall of the output end of the vibration disc in the vertical plane is less than one half of the distance between the inner top wall and the inner bottom wall of the part inlet, the width of the projection of the gap between the end of the spray pipe close to the vibration disc and the inner bottom wall of the output end of the vibration disc in the horizontal plane is greater than one half of the internal width of the temperature box and less than the internal width of the temperature box, the end of the spray pipe away from the vibration disc is connected to the solution spraying end of the solution sprayer through a hose outside the temperature box, the end of the temperature box away from the vibration disc is sealed, the output end of the vibration disc is provided with an output switch, the part recognition device is a photoelectric counting sensor, the photoelectric counting sensor is arranged at the part inlet, and the photoelectric counting sensor and the part output device are signal connected to the controller.

[0010] Preferably, the part output device comprises a support table, an extension rod, the upper surface of the support table is vertically provided with a support rod, one end of the temperature box away from the vibration disc is rotationally connected with the upper end of the support rod, the temperature box is connected with the upper surface of the support table through the extension rod between the support rod and the end close to the vibration disc, one end of the extension rod is rotationally connected with the temperature box, the other end of the extension rod is rotationally connected with the upper surface of the support table, the output switch is provided with a contact sensor, the end of the temperature box close to the vibration disc is abutted with the contact sensor, and the extension rod is signal connected with the output end of the controller.

[0011] Preferably, the output switch comprises a door latch, the output end of the vibration disc is a horizontal output slot, the end of the temperature box away from the output slot is lower than the end close to the output slot, the two inner side walls of the output slot are respectively provided with a first vertical slot and a second vertical slot which are perpendicular to the inner bottom wall of the output slot, the first vertical slot is axially provided with a through hole penetrating through the bottom wall of the output slot, the contact sensor comprises a cross rod and a control rod, the control rod is axially slidably arranged in the through hole, the top end of the control rod is radially fixedly connected with one end of the door latch, the other end of the door latch is slidably connected with the second vertical slot, one end of the second vertical slot is between the upper and lower ends of the inner side wall of the output slot, and the other end extends upward out of the output slot, the lower end of the control rod is radially connected with one end of the cross rod out of the output slot, the end of the cross rod away from the control rod is located on the lower edge of the part inlet, and the distance between the upper edge of the part inlet and the output slot is greater than the distance between the lower edge of the part inlet and the output slot.

[0012] Preferably, the outer bottom surface of the temperature box is provided with a vibration motor.

[0013] Preferably, the support table is further provided with a transition slide, one end of the transition slide is on the support table, and the other end of the transition slide extends downward to be flush with the bottom end of the support table, and the upper end of the transition slide is on the path that the part inlet rotates around the upper end of the support rod.

[0014] Compared with the prior art, the present application has the following beneficial effects:

[0015] 1、The present application adopts the mode that the vibration disc is matched with the inner surface sprayer arranged in the temperature box and the part identification device, a kind of inner surface sprayer for coaxial through hole part is designed, the inner surface of part can be sprayed without using soaking mode, so that it is not necessary to use spin dryer to process the part, the problem that the substance in the gap of the inner surface of part can not be spun out and accumulated after spinning after the inner surface of part is sprayed by traditional mode is solved.

[0016] 2. After the sensor of the present invention identifies the part, it transmits the signal to the controller. The controller controls the lifting device (the lifting device can be a pneumatic telescopic rod, a hydraulic telescopic rod, a lead screw, etc.) to control the baffle to extend upward into the receiving groove to limit the part. Then the spray probe can be inserted into the part to spray coating. This prevents the coating material from being coated on the surface of the part, so there is no need to wipe the outer surface of the part. At the same time, no immersion method is used, and no spin dryer is needed.

[0017] 3. The present invention employs a groove with a right angle cross-section on the end of the insulating block away from the supporting foot, which facilitates the clamping of the supporting foot onto the train guide rail.

[0018] 4. The design of the spray tube in this invention allows the solution sprayer to spray the inner surfaces of multiple parts simultaneously in one operation. After the parts in the temperature chamber are sprayed, the sprayed parts can be removed from the temperature chamber by the part output device. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the first embodiment of the present invention;

[0020] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0021] Figure 3 for Figure 1 The right view;

[0022] Figure 4 for Figure 1 Top view;

[0023] Figure 5 This is a schematic diagram of the structure of the second embodiment of the present invention;

[0024] Figure 6 for Figure 4 The structural diagram on the right;

[0025] Figure 7 This is a schematic diagram of the structure after removing one side wall of the temperature chamber in the second embodiment of the present invention;

[0026] Figure 8 This is a schematic diagram of the internal structure of the temperature chamber in the second embodiment of the present invention;

[0027] Figure 9 This is a schematic diagram of the structure at the output slot in the second embodiment of the present invention;

[0028] Figure 10 for Figure 9 A schematic diagram of the structure after the latch and control lever have been removed.

[0029] Figure 11 Figure 4 is a schematic view of the state of the sprayed part being sleeved onto the spray pipe under the action of the vibration motor in the second embodiment;

[0030] Figure 12 Figure 5 is a schematic view of the state of the sprayed part being stuck due to the relationship between the spray pipe and the output end of the vibration disc not being implemented according to the characteristics of the present application.

[0031] Wherein, 1, vibration disc; 2, temperature box; 3, part inlet; 4, solution sprayer; 5, spray probe; 6, baffle; 7, induction sensor; 8, containing groove; 9, part outlet; 10, spray pipe; 11, atomizing hole; 12, hose; 13, photoelectric counting sensor; 14, support table; 15, telescopic rod; 16, door latch; 17, control rod; 18, output groove; 19, first vertical groove; 20, second vertical groove; 21, through hole; 22, crossbar; 23, vibration motor; 24, transition slide; 25, sprayed part. DETAILED DESCRIPTION

[0032] REFERENCE Figures 1-12 A part film-coating automatic equipment, comprising a vibration disc 1, a temperature box 2 with a rectangular inner cross section and a strip-shaped overall shape, one end of the temperature box 2 being a part inlet 3, the output end of the vibration disc 1 being communicated with the part inlet 3 of the temperature box 2, the width of the temperature box 2 being equal to the width of the output end of the vibration disc 1, the temperature box 2 being provided with an inner surface sprayer and a part recognition device which cooperate with each other, the signal output end of the part recognition device being connected with a controller, the signal output end of the controller being connected with a solution sprayer 4, the solution spraying end of the solution sprayer 4 being provided with the inner surface sprayer, and the temperature box 2 being provided with a part output device.

[0033] In the embodiment, when in use, the parts are poured into the vibration disc 1 in batches, and then the vibration disc 1 is started, the parts are arranged to come out of the output end of the vibration disc 1 under the action of the vibration disc 1, and then enter the temperature box 2 from the part inlet 3, the part recognition device in the temperature box 2 recognizes the parts, sends a signal to the controller, the controller controls the solution sprayer 4 to work, and the inner surface sprayer on the solution sprayer 4 sprays the inner surface of the parts, so that the inside of the parts is directly sprayed, the soaking method for spraying the inner surface of the parts is abandoned, so that the parts do not need to be treated by a spin dryer, and the problem that the substances in the gaps of the inner surface of the parts cannot be completely spun out and accumulated after spinning due to the need to treat the parts by the spin dryer after the threads of the parts are coated by the traditional method is solved.

[0034] On the basis of the previous embodiment, preferably, the part inlet 3 is directly connected to the output end of the vibration disc 1, the inner surface sprayer is a spraying probe 5, the spraying probe 5 is arranged on the inner top wall of the temperature box 2, the part recognition device is arranged on the inner bottom wall of the temperature box 2 directly below the spraying probe 5, and the part recognition device is connected to the controller. In this way, the width and height of the temperature box 2 can be adjusted according to the size of the part in actual application. Generally, the height of the temperature box 2 is less than the outer diameter of the part, the height of the temperature box 2 is greater than the thickness of the part, and the width of the temperature box 2 is greater than the outer diameter of the part, so that the part is in a state in which the axis of the through hole of the part is perpendicular to the inner bottom surface of the temperature box 2 in the temperature box 2. Then, after the part enters the temperature box 2 from the vibration disc 1, the part is in a state in which the axis of the through hole of the part is perpendicular to the inner bottom wall of the temperature box 2 in the temperature box 2. Then, when the part recognition device recognizes the part, the spraying probe 5 extends from the inner top wall of the temperature box 2 and directly extends into the part to perform atomization coating.

[0035] On the basis of the previous embodiment, preferably, the part recognition device includes a baffle 6 and an induction sensor 7. The induction sensor 7 is arranged on the inner bottom wall of the temperature box 2 directly below the spraying probe 5. A containing groove 8 is arranged on the inner bottom wall of the temperature box 2 on the side away from the vibration disc 1 of the induction sensor 7. The baffle 6 is arranged in the containing groove 8 through a lifting device. The signal input end of the lifting device is connected to the signal output end of the controller. In this way, after the induction sensor 7 recognizes the part, a signal is transmitted to the controller. The controller controls the lifting device (the lifting device can be a pneumatic telescopic rod, a hydraulic telescopic rod, a lead screw, etc.) to control the baffle 6 to extend upward out of the containing groove 8 to limit the part. Then, the spraying probe 5 can extend into the part to perform spraying coating. In this way, the coating material will not be plated on the surface of the part, and the outer surface of the part does not need to be wiped. At the same time, the soaking method is not used, and a spin dryer is not needed.

[0036] In the above embodiment, preferably, the part output device is a part output port 9, which is arranged at one end of the temperature box 2 opposite to the part inlet 3, and the projection of the part output port 9 on the cross section of the temperature box 2 coincides with the projection of the part inlet 3 on the cross section of the temperature box 2. In this way, the moving path of the parts after they come out of the vibration disc 1 is axially through the inside of the temperature box 2, and then the parts leave the temperature box from the part output port 9 after the coating in the temperature box is completed, and the movement of the parts is continuous during the whole process, and the structure is relatively simple. Since the projection of the part output port 9 on the cross section of the temperature box 2 coincides with the projection of the part inlet 3 on the cross section of the temperature box 2, the state of the parts moving to the part output port 9 after the spraying is as regular and orderly as the state of the parts moving to the part inlet 3, which facilitates the collection of the parts after the spraying is completed.

[0037] As another preferred mode, the inner surface sprayer is a spray pipe 10, and a spray pipe 10 is coaxially arranged in the temperature box 2, a plurality of atomizing holes 11 are arranged on the circumferential surface of the spray pipe 10, the end of the spray pipe 10 close to the vibration disc 1 is lower than the inner bottom wall of the output end of the vibration disc 1, the projection of the gap between the end of the spray pipe 10 close to the vibration disc 1 and the inner bottom wall of the output end of the vibration disc 1 in the vertical plane is less than half of the distance between the inner top wall and the inner bottom wall of the part inlet 3, the projection of the width of the gap between the end of the spray pipe 10 close to the vibration disc 1 and the inner bottom wall of the output end of the vibration disc 1 in the horizontal plane is greater than half of the internal width of the temperature box 2 and less than the internal width of the temperature box 2, the end of the spray pipe 10 away from the vibration disc 1 is connected with the solution spraying end of the solution sprayer 4 through a hose 12 outside the temperature box 2, the end of the temperature box 2 away from the vibration disc 1 is sealed, the output end of the vibration disc 1 is provided with an output switch, the part recognition device is a photoelectric counting sensor 13, which is arranged at the part inlet 3, and the photoelectric counting sensor 13 and the part output device are signal connected with the controller. In this embodiment, when in use, the output switch is opened, and the state of the parts when they come out of the vibration disc 1 is that the axis is vertical, because the stable state of the parts under the vibration of the vibration disc 1 is necessarily that the axis is vertical (see the state of the nut placed in actual life);

[0038] The features are that the end of the spray pipe 10 close to the vibration disc 1 is lower than the inner bottom wall of the output end of the vibration disc 1, and the main purpose of the arrangement is to enable the through hole on the sprayed part 25 to smoothly hang on the end of the spray pipe 10 close to the vibration disc 1 after the sprayed part 25 is vibrated out of the output end of the vibration disc 1 (see the detailed description of the figure) Figure 11) ; on the contrary, if the end of the spray pipe 10 close to the vibration tray 1 is higher than the inner bottom wall of the output end of the vibration tray 1, the case Figure 12 , Figure 12 may cause the sprayed parts 25 to be stuck.

[0039] The features are: the projection of the gap between the end of the spray pipe 10 close to the vibration tray 1 and the inner bottom wall of the output end of the vibration tray 1 in the vertical plane where the axis of the spray pipe 10 is located is less than half the distance between the inner top wall and the inner bottom wall of the part inlet 3, that is, the projection of the gap between the end of the spray pipe 10 close to the vibration tray 1 and the inner bottom wall of the output end of the vibration tray 1 in the vertical plane where the axis of the spray pipe 10 is located is h, and the distance between the inner top wall and the inner bottom wall of the part inlet 3 is H, so Figure 10 when h > H, the sprayed parts 25 may fall to the outer top wall of the part inlet 3.

[0040] The features are:

[0041] The projection of the gap between the end of the spray pipe 10 close to the vibration tray 1 and the inner bottom wall of the output end of the vibration tray 1 in the vertical plane is less than half the distance between the inner top wall and the inner bottom wall of the part inlet 3; the projection of the width of the gap between the end of the spray pipe 10 close to the vibration tray 1 and the inner bottom wall of the output end of the vibration tray 1 in the horizontal plane is greater than half the internal width of the temperature box 2 and less than the internal width of the temperature box 2; so that the parts coming out of the vibration tray 1 will be converted from the state where the axis is perpendicular to the inner bottom surface of the temperature box 2 to the state where the axis is parallel to the inner bottom surface of the temperature box 2, and then they will be sleeved on the spray pipe 10, the photoelectric counting sensor 13 arranged at the part inlet 3 can calculate the number of parts entering the temperature box 2, when the number reaches the preset number, the photoelectric counting sensor 13 sends a signal to the controller, and the output switch is closed at the same time, the controller controls the solution sprayer 4 to spray, at this time, the substance for coating is atomized from the atomizing holes 11 arranged on the circumferential surface of the spray pipe 10 and adheres to the inner surface of the parts, that is, the inner surface of the parts is directly sprayed. In this way, the solution sprayer 4 can spray the inner surfaces of multiple parts at a time, and after the parts in the temperature box 2 are sprayed, the sprayed parts can be removed from the temperature box 2 through the part output device.

[0042] On the basis of the previous embodiment, preferably, the part output device comprises a support table 14, an extension rod 15, the upper surface of the support table 14 is vertically provided with a support rod, the temperature box 2 is rotationally connected to the upper end of the support rod away from the vibration disc 1, the temperature box 2 is connected to the upper surface of the support table 14 through the extension rod 15 between the support rod and the end close to the vibration disc 1, one end of the extension rod 15 is rotationally connected to the temperature box 2, the other end of the extension rod 15 is rotationally connected to the upper surface of the support table 14, the output switch is provided with a contact sensor, the end of the temperature box 2 close to the vibration disc 1 abuts against the contact sensor, and the extension rod 15 is signal connected to the output end of the controller. After the parts in the temperature box 2 are finished with spraying, the controller sends a signal to the extension rod 15, so that the extension rod 15 is retracted, and then the end of the temperature box 2 close to the vibration disc 1 is lower than the end rotationally connected to the support rod, the end of the temperature box 2 close to the vibration disc 1 is away from the contact sensor, the output switch closes the output end of the vibration disc 1, at this time, the parts sleeved on the spray pipe 10 leave the temperature box 2 from the part inlet 3, until the parts finished with spraying in the temperature box 2 all leave the temperature box, the controller controls the extension rod 15 to be elongated, then the temperature box 2 touches the output switch, and the output switch is opened, at this time, the parts in the vibration disc 1 enter the temperature box 2 for spraying again.

[0043] On the basis of the previous embodiment, preferably, the output switch comprises a latch 16, the output end of the vibration disc 1 is a horizontal output slot 18, the temperature box 2 is lower at the end far from the output slot 18 than at the end close to the output slot 18, the two inner side walls of the output slot 18 are respectively provided with a first vertical slot 19 and a second vertical slot 20 which are perpendicular to the inner bottom wall of the output slot 18, the contact sensor comprises a crossbar 22 and a control rod 17, the first vertical slot 19 is axially provided with a through hole 21 which penetrates the bottom wall of the output slot 18, the control rod 17 is axially slidably arranged in the through hole 21, the top end of the control rod 17 is radially fixedly connected to one end of the latch 16, the other end of the latch 16 is slidably connected to the second vertical slot 20, one end of the second vertical slot 20 is between the upper and lower ends of the inner side wall of the output slot 18, and the other end extends upward out of the output slot 18, the lower end of the control rod 17 is radially connected to one end of the crossbar 22 outside the output slot 18, the end of the crossbar 22 far from the control rod 17 is located at the lower edge of the part inlet 3, and the distance between the upper edge of the part inlet 3 and the output slot 18 is greater than the distance between the lower edge of the part inlet 3 and the output slot 18. After such design, when the temperature box 2 contacts the crossbar 22, the control rod 17 slides upward in the first vertical slot 19, and at the same time, the latch 16 also slides upward, so that the latch 16 is not blocked at the output slot 18, and then when the temperature box 2 turns downward toward the end of the vibration disc 1 (i.e. during the process of pouring out the parts in the temperature box 2), the latch 16 slides downward along the first vertical slot 19 and the second vertical slot 20 under the action of its own gravity, until it is blocked in the output slot 18, at which time the parts in the vibration disc 1 will not leave the vibration disc 1 from the output slot 18.

[0044] On the basis of the previous embodiment, preferably, the outer bottom surface of the temperature box 2 is provided with a vibration motor 23. By arranging the vibration motor 23, the speed of the parts after spraying leaving the temperature box 2 can be accelerated, and the production efficiency is improved.

[0045] On the basis of the previous embodiment, preferably, the support table 14 is further provided with a transition slide 24, one end of the transition slide 24 is on the support table 14, and the other end extends downward to be flush with the bottom end of the support table 14, and the upper end of the transition slide 24 is on the path of the part inlet 3 rotating around the upper end of the support rod. By arranging the transition slide 24, the parts after spraying leaving the temperature box 2 have a specified path, which facilitates collection.

Claims

1. An internal surface sprayer for coaxial through-hole parts, characterized in that, The device includes a vibratory plate (1) and a temperature chamber (2) with a rectangular inner cross-section and a strip shape. One end of the temperature chamber (2) is a part inlet (3). The output end of the vibratory plate (1) is connected to the part inlet (3) of the temperature chamber (2). The width of the temperature chamber (2) is equal to the width of the output end of the vibratory plate (1). The temperature chamber (2) is equipped with an inner surface sprayer and a part identification device that cooperate with each other. The signal output end of the part identification device is connected to a controller. The signal output end of the controller is connected to a solution sprayer (4). The solution spraying end of the solution sprayer (4) is equipped with the inner surface sprayer. The temperature chamber (2) is equipped with a part output device. The inner surface sprayer is a spray pipe (10). A spray pipe (10) is coaxially arranged inside the temperature chamber (2). Several atomizing holes (11) are arranged on the circumferential surface of the spray pipe (10). The end of the spray pipe (10) near the vibrating plate (1) is lower than the inner bottom wall of the output end of the vibrating plate (1). The width of the projection of the gap between the end of the spray pipe (10) near the vibrating plate (1) and the inner bottom wall of the output end of the vibrating plate (1) in the vertical plane is less than half the distance between the inner top wall and the inner bottom wall of the part inlet (3). The width of the gap projected in the horizontal plane is greater than half the internal width of the temperature chamber (2) and less than the internal width of the temperature chamber (2); the end of the spray pipe (10) away from the vibrating plate (1) is connected to the solution spraying end of the solution sprayer (4) outside the temperature chamber (2) through a hose (12); the end of the temperature chamber (2) away from the vibrating plate (1) is sealed; the output end of the vibrating plate (1) is provided with an output switch; the part identification device is a photoelectric counting sensor (13); the photoelectric counting sensor (13) is located at the part inlet (3); the photoelectric counting sensor (13) and the part output device are signal connected to the controller.

2. The inner surface sprayer for coaxial through-hole parts according to claim 1, characterized in that, The part output device includes a support platform (14) and a telescopic rod (15). The support platform (14) has a vertical support rod on its upper surface. The end of the temperature box (2) away from the vibrating plate (1) is rotatably connected to the upper end of the support rod. The end of the temperature box (2) is connected to the upper surface of the support platform (14) via the telescopic rod (15) between the support rod and the end near the vibrating plate (1). One end of the telescopic rod (15) is rotatably connected to the temperature box (2), and the other end of the telescopic rod (15) is rotatably connected to the upper surface of the support platform (14). The output switch is equipped with a contact sensor. The end of the temperature box (2) near the vibrating plate (1) abuts against the contact sensor. The telescopic rod (15) is signal-connected to the output terminal of the controller.

3. The inner surface sprayer for coaxial through-hole parts according to claim 2, characterized in that, The output switch includes a latch (16), the output end of the vibrating plate (1) is a horizontal output slot (18), the end of the temperature box (2) away from the output slot (18) is lower than the end near the output slot (18), the two inner sidewalls of the output slot (18) are respectively provided with a first vertical slot (19) and a second vertical slot (20) perpendicular to the inner bottom wall of the output slot (18), the first vertical slot (19) is axially provided with a through hole (21) penetrating the bottom wall of the output slot (18), the contact sensor includes a crossbar (22) and a control rod (17), the control rod (17) is axially slidably arranged in the through hole (21), the top of the control rod (17) One end of the latch (16) is radially fixedly connected to the other end of the latch (16), and the other end of the latch (16) is slidably connected to the second vertical groove (20). One end of the second vertical groove (20) is between the upper and lower ends of the inner sidewall of the output groove (18), and the other end extends upward to the outside of the output groove (18). The lower end of the control rod (17) is radially connected to one end of the crossbar (22) outside the output groove (18). The end of the crossbar (22) away from the control rod (17) is located on the lower edge of the part inlet (3). The distance between the upper edge of the part inlet (3) and the output groove (18) is greater than the distance between the lower edge of the part inlet (3) and the output groove (18).

4. An internal surface sprayer for coaxial through-hole parts according to any one of claims 2 or 3, characterized in that, A vibration motor (23) is provided on the outer bottom surface of the temperature chamber (2).

5. The inner surface sprayer for coaxial through-hole parts according to claim 4, characterized in that, The support platform (14) is also provided with a transition slide (24), one end of which is on the support platform (14) and the other end extends downward to be flush with the bottom of the support platform (14). The upper end of the transition slide (24) is on the path of the part inlet (3) rotating around the upper end of the support rod.

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