CN220389067U

CN220389067U - Piston hole honing processing loading attachment

Info

Publication number: CN220389067U
Application number: CN202321555812.3U
Authority: CN
Inventors: 王东; 舒向东; 刘玉平; 贺继民; 吉伟; 税凯
Original assignee: Sichuan Zhuntai Precision Machinery Manufacturing Co ltd
Current assignee: Sichuan Zhuntai Precision Machinery Manufacturing Co ltd
Priority date: 2023-06-18
Filing date: 2023-06-18
Publication date: 2024-01-26
Anticipated expiration: 2033-06-18

Abstract

The utility model discloses a piston inner hole honing processing feeding device which comprises a conveying frame, a conveying mechanism arranged on the conveying frame and used for conveying pistons, a material buffering mechanism connected with the conveying frame and used for buffering the pistons on the conveying mechanism, and a transferring mechanism connected with the material buffering mechanism and used for transferring the pistons on the material buffering mechanism to a piston processing station. According to the utility model, the piston is conveyed to the material buffer mechanism, the piston is transferred to the piston inner hole honing processing station by the mechanical arm from the material buffer mechanism, and the piston is not required to be manually held or is transferred to the piston inner hole honing processing station by a manual holding fixture tool, so that the technical problems that an operator can be injured by an operating machine in the process of transferring the piston to the piston inner hole honing processing station, the piston processing efficiency is influenced by the physical ability, the operation experience and the like of the operator, and the operator is difficult to accurately place the piston to the piston inner hole honing processing station in a handheld manner are solved.

Description

Piston hole honing processing loading attachment

Technical Field

The utility model belongs to the technical field of piston machining, and particularly relates to a feeding device for honing an inner hole of a piston.

Background

In the traditional piston inner hole honing process, a piston is transported and placed on a piston inner hole honing processing station by adopting manual handling or manual handling fixture tools, and the following defects exist in the mode: firstly, when the piston inner hole honing process is fed, accurate alignment processing is needed, a worker holds or holds a clamp manually to transport and place the piston, a skilled worker can accurately place the piston on a piston processing station, and the requirement on workers is high, so that the workers on the post need a certain time to train the worker before the workers on the post can go on the post. Secondly, the manual hand or the manual hand-held fixture tool transfers and places the piston on a piston processing station, so that mechanical accidental injury potential safety hazards exist. Thirdly, adopt artifical hand or artifical handheld fixture tool to transport the piston and place on the piston processing station, the hand speed is different for the individual, and the same workman also has the speed difference in different time quantum hand speeds, leads to piston machining efficiency unstable, influences the processing progress.

Disclosure of Invention

The utility model aims to solve the technical problems that: a feeding device for honing an inner hole of a piston is provided, so as to at least solve the technical problems.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

the piston inner hole honing processing feeding device comprises a conveying frame, a conveying mechanism, a material buffering mechanism and a transferring mechanism, wherein the conveying mechanism is arranged on the conveying frame and used for conveying a piston, the material buffering mechanism is used for buffering the piston on the conveying mechanism, and the transferring mechanism is used for transferring the piston on the material buffering mechanism to a piston processing station; the conveying mechanism comprises a conveying belt which is arranged on the conveying frame and used for conveying the piston to the material buffer mechanism, and an alignment guide rod which is arranged on the piston pin hole in a penetrating way and used for aligning and guiding the piston.

Further, a conveying groove is formed in the conveying frame, a driving roller and a driven roller which are respectively positioned at two ends in the conveying belt are arranged in the conveying groove, a driving motor is arranged on the conveying frame, and the driving motor is connected with the driving roller.

Further, the conveying mechanism further comprises a positioning mechanism, the positioning mechanism comprises a positioning block arranged on the conveying frame and a positioning nail arranged on the positioning block, a nail hole matched with the positioning nail is formed in the alignment guide rod, and the positioning nail is inserted into the nail hole.

Further, a limiting groove is formed in the conveying frame, and the positioning block is embedded in the limiting groove.

Further, the material buffer mechanism comprises a buffer frame, and a buffer groove which is in butt joint with the conveyor belt and used for buffering a piston is formed in the buffer frame.

Further, a material indicating mechanism is arranged on the cache frame and comprises a weight sensor arranged at the bottom of the cache groove, an indicating box arranged on the outer wall of the cache frame, a battery and a singlechip which are arranged in the indicating box and are connected with each other, and a prompting lamp arranged outside the indicating box and connected with the singlechip; the singlechip is connected with the weight sensor.

Further, a gap is reserved between the buffer storage rack and the conveying rack, an adapter plate is arranged on the bottom wall in the buffer storage groove, and the adapter plate passes through the gap to be in contact with the conveying belt.

Further, the adapter plate is flush with the bottom wall in the buffer groove.

Further, one end of the alignment guide rod, which is close to the buffer frame, stops at the gap.

Further, the transfer mechanism comprises an L-shaped transfer support, an installation seat which is slidably arranged on the transfer support, a second air cylinder which is arranged on the transfer support and is connected with the installation seat and is used for driving the installation seat to slide on the transfer support, a third air cylinder which is arranged on the installation seat, a mounting plate which is arranged on a telescopic rod of the third air cylinder, and a manipulator which is arranged on the mounting plate and is used for clamping a piston; the transfer support is provided with a sliding groove, the mounting seat is provided with a sliding block matched with the sliding groove, and the sliding block is embedded in the sliding groove in a sliding way.

Compared with the prior art, the utility model has the following beneficial effects:

the utility model has simple structure, scientific and reasonable design and convenient use, the piston is conveyed to the buffer frame, the mechanical arm accurately transfers the piston to the piston inner hole honing processing station from the buffer frame, and the piston is not required to be manually held or is manually held by a fixture tool to be transferred and placed on the piston inner hole honing processing station, so that the technical problems that an operator can be possibly injured by an operating machine in the process of transferring the piston to the piston inner hole honing processing station, the piston processing efficiency is influenced by the physical ability, the operation experience and the like of the operator, and the operator is difficult to accurately transfer the piston to the piston inner hole honing processing station by holding or holding the fixture.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model.

Fig. 2 is a schematic diagram of a carriage and a buffer carriage.

Figure 3 is a diagram of the utility model in relation to the position of the piston bore honing station.

Fig. 4 is a schematic view of a conveyor belt within a carriage.

Fig. 5 is a diagram showing the connection relationship between the positioning block and the alignment guide.

Fig. 6 is a functional block diagram of a material indicating mechanism.

Fig. 7 is a schematic diagram of a buffer frame structure.

FIG. 8 is a schematic view of the stationary and movable fingers extending into the blind bore of the piston.

Fig. 9 is a bottom view of the stationary and movable fingers extending into the blind bore of the piston.

Fig. 10 is a schematic view of the stationary and movable grippers as they extract the transfer piston.

Fig. 11 is a bottom view of the stationary and movable grippers as they extract the transfer piston.

Fig. 12 is a schematic view of a piston mechanism.

Fig. 13 is a schematic view of the chute on the transfer carriage.

Fig. 14 is a schematic view of a slider on a mount.

Wherein, the names corresponding to the reference numerals are:

1-conveying frame, 2-piston, 3-conveying belt, 4-alignment guide rod, 5-driving roller, 6-driven roller, 7-driving motor, 8-positioning block, 9-positioning pin, 10-nail hole, 11-limit groove, 12-buffer frame, 13-buffer groove, 14-weight sensor, 15-indication box, 16-singlechip, 17-battery, 18-indicator lamp, 19-adapter plate, 20-gap, 21-piston pin hole, 28-piston inner hole honing processing station, 30-blind hole, 31-conveying groove, 40-transferring bracket, 41-mounting seat, 42-second cylinder, 43-third cylinder, 44-mounting plate, 45-manipulator, 46-chute, 47-slider, 55-fixed clamp, 56-movable clamp, 61-third driving motor and 62-manipulator chute.

Detailed Description

The present utility model will be described in further detail with reference to the accompanying drawings, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the person of ordinary skill in the art based on embodiments of the present utility model, are intended to be within the scope of the present utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation or be constructed and operated in a specific orientation, and thus they should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; of course, it may be mechanically or electrically connected; in addition, the connection may be direct, indirect via an intermediate medium, or communication between two elements. The specific meaning of the above terms in the present utility model will be understood by those skilled in the art according to the specific circumstances.

Example 1

As shown in fig. 1-14, a piston inner hole honing process feeding device comprises a conveying frame 1, a conveying mechanism arranged on the conveying frame 1 and used for conveying a piston 2, a material buffer mechanism used for buffering the piston on the conveying mechanism and a transfer mechanism used for transferring the piston on the material buffer mechanism to a piston processing station, wherein the material buffer mechanism is connected with the conveying frame 1; the conveying mechanism comprises a conveying belt 3 which is arranged on the conveying frame 1 and used for conveying the piston to the material buffer mechanism, and an alignment guide rod 4 which is arranged on the piston pin hole 21 in a penetrating way and used for aligning and guiding the piston 2.

In this embodiment 1, the material buffering mechanism can only butt-buffer one piston at a time, and a plurality of pistons are arranged in a single row with their skirt parts facing upwards on the conveyor belt 3.

The piston skirt parts are upwards and are flatly arranged on the conveyor belt 3 in a single row in the following way: the alignment guide rod 4 passes through the piston pin holes 21 of the pistons with the skirt parts facing upwards, so that the pistons are connected in series on the alignment guide rod 4, and then the guide rod connected in series with the pistons is arranged on the conveyor belt 3, so that the skirt parts of the pistons face upwards and are arranged on the conveyor belt 3 in a single row. The alignment guide rod 4 is arranged above the conveyor belt 3 through the supporting action of a plurality of pistons, and the pistons can slide on the alignment guide rod 4 under the action of conveying of the conveyor belt 3.

One end of the alignment guide rod 4 far away from the material buffer mechanism is fixedly connected with the conveying frame 1, so that the alignment guide rod 4 can be prevented from moving in the process that the conveying belt 3 drives the piston to move. In the process that the conveyor belt 3 drives the piston to move, if one end of the alignment guide rod 4 far away from the material buffering mechanism is not fixed, the alignment guide rod 4 and the piston move forwards under the drive of the conveyor belt 3, so that a plurality of pistons on the alignment guide rod 4 cannot be separated from the alignment guide rod 4, and further the pistons cannot slide to the material buffering mechanism under the drive of the conveyor belt 3, and the subsequent transfer mechanism is affected to transfer the pistons to the piston inner hole honing processing station 28.

The utility model has simple structure, scientific and reasonable design and convenient use, the piston is conveyed to the material buffer mechanism, the transfer mechanism transfers the piston to the piston inner hole honing processing station from the material buffer mechanism, and the technical problems that an operator can be injured by an operating machine in the process of transferring the piston to the piston inner hole honing processing station, the piston processing efficiency is influenced by the physical ability and the operation experience of the operator, and the like, and the operator is difficult to accurately place the piston on the piston inner hole honing processing station in a handheld manner are solved.

Example 2

The conveying frame 1 is provided with a conveying groove 31, a driving roller 5 and a driven roller 6 which are respectively positioned at two ends in the conveying belt 3 are arranged in the conveying groove 31, the conveying frame 1 is provided with a driving motor 7, and the driving motor 7 is connected with the driving roller 5.

In this embodiment 2, the alignment guide rod 4 and a plurality of pistons on the alignment guide rod 4 are all located in the conveying groove 31, and the width of the pistons is slightly smaller than the width of the conveying groove 31, so that the pistons can move in the conveying groove 31, and the left and right side spaces of the pistons are limited, so that the pistons can be prevented from shifting in the moving direction of the conveyor belt 3, each piston is always located on the same straight line where the conveyor belt 3 and the material buffer mechanism are located in the moving process, accurate butt joint between the conveyor belt 3 and the material buffer mechanism is facilitated, and each piston on the conveyor belt 3 can accurately slide onto the material buffer mechanism.

The driving motor 7 is used for driving the driving roller 5 to rotate, so that the driving roller 5 and the driven roller 6 can be used for driving the conveyor belt 3 to reciprocate, and then the reciprocating conveyor belt 3 is used for conveying the piston.

Example 3

The conveying mechanism further comprises a positioning mechanism, the positioning mechanism comprises a positioning block 8 arranged on the conveying frame 1 and a positioning nail 9 arranged on the positioning block 8, a nail hole 10 matched with the positioning nail 9 is formed in the alignment guide rod 4, and the positioning nail 9 is inserted into the nail hole 10.

In this embodiment 3, the positioning block 8 is fixedly connected with the conveying frame 1, and the manner of fixing the end of the alignment guide rod 4 far away from the material buffering mechanism is as follows: the positioning nails 9 on the positioning blocks 8 are inserted into the nail holes 10 formed on the alignment guide rods 4. In the process of driving the piston to move by the conveyor belt 3, the positioning nails 9 can prevent the alignment guide rod 4 from moving together with the piston.

Example 4

The conveying frame 1 is provided with a limiting groove 11, and the positioning block 8 is embedded in the limiting groove 11.

In this embodiment 4, the manner of fixedly connecting the positioning block 8 and the carriage 1 is as follows: the conveying frame 1 is provided with a limiting groove 11, and the positioning block 8 is embedded in the limiting groove 11. The limiting groove 11 limits the position and the space of the positioning block 8, so that the positioning block 8 is clamped and fixed on the conveying frame 1.

Example 5

The material buffer mechanism comprises a buffer frame 12, and a buffer groove 13 which is in butt joint with the conveyor belt 3 and used for buffering one piston 2 is formed in the buffer frame 12.

In embodiment 5, the buffer groove 13 on the buffer frame 12 is used for buffering the piston transferred from the placement conveyor 3, and only a single piston can be installed in the buffer groove. After the piston on the conveyor belt 3 slides into the buffer tank 13, the piston in the buffer tank 13 is transferred to a piston inner hole honing station by the transfer mechanism. The pistons on the conveyor belt 3 slide into the buffer tank 13 successively, and the transfer mechanism transfers the pistons in the buffer tank 13 to the piston inner hole honing station 28 orderly.

Example 6

The buffer storage frame 12 is provided with a material indicating mechanism, the material indicating mechanism comprises a weight sensor 14 arranged at the inner bottom of the buffer storage groove 13, an indicating box 15 arranged on the outer wall of the buffer storage frame 12, a battery 17 and a singlechip 16 which are arranged in the indicating box 15 and are mutually connected, and a prompting lamp 18 arranged outside the indicating box 15 and connected with the singlechip 16; the singlechip 16 is connected with the weight sensor 14.

In this embodiment 6, the battery 17 is used for supplying power for the operation of the weight sensor 14, the indicator light 18 and the single-chip microcomputer 16, and the specific operation principle of the material indicating mechanism is as follows: after the piston on the conveyor belt 3 slides into the buffer groove 13, the weight sensor 14 senses the weight information of the piston, the weight sensor 14 transmits the sensed weight information signal to the singlechip 16, and the singlechip 16 controls the prompt lamp 18 to be lightened according to the received signal to prompt.

In this embodiment 6, the singlechip 16 is preferably an STM32F1 type singlechip. The battery 17 is preferably a rechargeable lithium battery.

Example 7

A gap 20 is reserved between the buffer storage frame 12 and the conveying frame 1, an adapter plate 19 is arranged on the inner bottom wall of the buffer storage groove 13, and the adapter plate 19 passes through the gap 20 to be contacted with the conveying belt 3. The adapter plate 19 is flush with the inner bottom wall of the buffer tank 13.

In embodiment 7, a gap 20 is left between the buffer rack 12 and the carriage 1, and the gap 20 between the buffer rack 12 and the carriage 1 is larger than 1cm and smaller than 3cm. An adapter plate 19 is arranged on the inner bottom wall of the buffer groove 13, and the adapter plate 19 passes through a gap 20 to be contacted with the conveyor belt 3. In this way, the piston on the conveyor belt 3 can be ensured to slide into the buffer tank 13 smoothly. The piston on the conveyor belt 3 slides onto the adapter plate 19 under the conveying of the conveyor belt and then slides into the buffer groove 13 by inertia.

Example 8

The end of the alignment guide 4 near the cache shelf 12 stops at the gap 20.

In this embodiment 8, the end of the alignment guide 4 close to the buffer frame 12 stops at the gap 20, which is beneficial for the piston on the alignment guide 4 to separate from the alignment guide 4 at the gap 20.

After the piston on the alignment guide rod 4 moves along with the transmission of the conveyor belt 3 to the end of the alignment guide rod 4 close to the buffer storage frame 12, the piston can be separated from the alignment guide rod 4 and slide onto the adapter plate 19 under the transmission of the conveyor belt 3, and then slides into the buffer storage groove 13 from the adapter plate 19 by means of inertia.

Example 9

The transfer mechanism comprises an L-shaped transfer bracket 40, an installation seat 41 which is slidably installed on the transfer bracket 40, a second air cylinder 42 which is arranged on the transfer bracket 40 and is connected with the installation seat 41 for driving the installation seat 41 to slide on the transfer bracket 40, a third air cylinder 43 which is arranged on the installation seat 41, an installation plate 44 which is arranged on a telescopic rod of the third air cylinder 43, and a manipulator 45 which is arranged on the installation plate 44 and is used for clamping a piston; the transfer bracket 40 is provided with a chute 46, the mounting seat 41 is provided with a slide block 47 matched with the chute 46, and the slide block 47 is slidably embedded in the chute 46.

In embodiment 9, the third cylinder 43 can reciprocate linearly under the driving of the mounting seat 41. The principle of the transfer mechanism for transferring the piston is as follows: after the conveyor belt 3 conveys the piston into the buffer tank 13 on the buffer frame 12, the second air cylinder 42 pushes the mounting seat 41 to slide on the transfer support 40, the mounting seat 41 drives the third air cylinder 43 to move in the direction close to the buffer tank 13, the mounting plate 44 is driven to synchronously move in the moving process of the third air cylinder 43, the mounting plate 44 drives the manipulator 45 to synchronously move until the manipulator 45 is positioned right above the buffer tank 13 and is opposite to the buffer tank 13, the second air cylinder 42 stops running, the third air cylinder 43 drives the mounting plate 44 and the manipulator 45 on the mounting plate 44 to vertically move downwards until the manipulator 45 extracts the piston in the buffer tank 13, the third air cylinder 43 drives the mounting plate 44 and the manipulator 45 on the mounting plate 44 to vertically move upwards to the original position, the second air cylinder 42 again runs and drives the third air cylinder 43 to move in the direction far away from the buffer tank 13 until the manipulator 45 is aligned with the piston inner hole honing station 28, at this time, the third air cylinder 43 drives the manipulator 45 to vertically move downwards until the manipulator 45 transfers the piston to the piston inner hole honing station 28, and the third air cylinder 43 drives the manipulator 45 to vertically move upwards to the original position.

In this embodiment 9, the manipulator 45 includes a fixed grip 55 disposed at the bottom of the mounting plate 44, a movable grip 56 slidably connected to the bottom of the mounting plate 44, and a third driving motor 61 disposed at the bottom of the mounting plate 44 for driving the movable grip 56 to slide at the bottom of the mounting plate 44. The bottom of the mounting plate 44 is provided with a manipulator chute 62, the movable clamping hand 56 is provided with a manipulator slider matched with the manipulator chute 62, and the manipulator slider is embedded in the manipulator chute 62. The manipulator chute 62 is similar in structure to chute 46 and the manipulator slide block is similar in structure to slide block 47.

The principle of the manipulator 45 extracting the piston is: the mechanical arm 45 moves vertically downwards under the pushing of the third air cylinder 43, the fixed clamping hand 55 and the movable clamping hand 56 extend into the piston blind hole 30, and at the moment, the outer wall of the fixed clamping hand 55 is tightly attached to the inner wall of the piston blind hole 30 to play a role in positioning; the third driving motor 61 acts to pull the movable clamping hand 56 to move away from the fixed clamping hand 55 at the bottom of the mounting plate 44 until touching and firmly clinging to the inner wall of the piston blind hole 30; the third cylinder 43 is operated again to pull the manipulator 45 to move vertically upwards, and the piston is lifted and transferred under the supporting action of the fixed clamp hand 55 and the movable clamp hand 56.

The principle of releasing the piston by the manipulator 45 is as follows: the third driving motor 61 operates to push the movable grip 56 to move in a direction approaching the fixed grip 55 at the bottom of the mounting plate 44, the movable grip 56 releases the support to the piston 2, and the piston loses the support of the fixed grip 55 and the movable grip 56 and loosens from the fixed grip 55 and the movable grip 56.

The driving motor 7, the singlechip 16, the second air cylinder 42, the third air cylinder 43 and the third driving motor 61 are respectively connected with a workshop PLC electric cabinet, and the operation is controlled by the workshop PLC electric cabinet.

The driving motor 7, the workshop PLC electric cabinet, the weight sensor 14, the singlechip 16, the battery 17, the indicator light 18, the second air cylinder 42, the third air cylinder 43 and the third driving motor 61 used in the present utility model are all known electrical devices and can be directly purchased in the market, and the structures, circuits and control principles of the driving motor 7, the workshop PLC electric cabinet, the weight sensor 14, the singlechip 16, the battery 17, the indicator light 18, the second air cylinder 42, the third air cylinder 43 and the third driving motor 61 are all known technologies, so that the structures, circuits and control principles of the driving motor 7, the weight sensor 14, the workshop PLC electric cabinet, the singlechip 16, the battery 17, the indicator light 18, the second air cylinder 42, the third air cylinder 43 and the third driving motor 61 are not repeated herein.

Finally, it should be noted that: the above embodiments are merely preferred embodiments of the present utility model for illustrating the technical solution of the present utility model, but not limiting the scope of the present utility model; while the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art will appreciate that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the corresponding technical solutions; that is, even though the main design concept and spirit of the present utility model is modified or finished in an insubstantial manner, the technical problem solved by the present utility model is still consistent with the present utility model, and all the technical problems are included in the protection scope of the present utility model; in addition, the technical scheme of the utility model is directly or indirectly applied to other related technical fields, and the technical scheme is included in the scope of the utility model.

Claims

1. The piston inner hole honing processing feeding device is characterized by comprising a conveying frame (1), a conveying mechanism arranged on the conveying frame (1) and used for conveying a piston (2), a material buffer mechanism used for buffering the piston on the conveying mechanism and a transfer mechanism used for transferring the piston on the material buffer mechanism to a piston processing station, wherein the material buffer mechanism is connected with the conveying frame (1); the conveying mechanism comprises a conveying belt (3) which is arranged on the conveying frame (1) and used for conveying the piston to the material buffer mechanism, and an alignment guide rod (4) which is arranged on the piston pin hole (21) in a penetrating way and used for performing alignment guide on the piston (2).

2. The feeding device for honing processing of inner holes of pistons according to claim 1 is characterized in that a conveying groove (31) is formed in a conveying frame (1), a driving roller (5) and a driven roller (6) which are respectively arranged at two ends in a conveying belt (3) are arranged in the conveying groove (31), a driving motor (7) is arranged on the conveying frame (1), and the driving motor (7) is connected with the driving roller (5).

3. The piston inner hole honing feeding device according to claim 1, wherein the conveying mechanism further comprises a positioning mechanism, the positioning mechanism comprises a positioning block (8) arranged on the conveying frame (1) and a positioning nail (9) arranged on the positioning block (8), a nail hole (10) matched with the positioning nail (9) is formed in the alignment guide rod (4), and the positioning nail (9) is inserted into the nail hole (10).

4. A piston inner bore honing feeding device according to claim 3, characterized in that the conveying frame (1) is provided with a limit groove (11), and the positioning block (8) is embedded in the limit groove (11).

5. The piston inner hole honing process feeding device according to claim 1, wherein the material caching mechanism comprises a caching frame (12), and a caching groove (13) which is in butt joint with the conveyor belt (3) and used for caching one piston (2) is formed in the caching frame (12).

6. The piston inner hole honing processing feeding device according to claim 5, characterized in that a material indicating mechanism is arranged on the buffer storage rack (12), the material indicating mechanism comprises a weight sensor (14) arranged at the inner bottom of the buffer storage groove (13), an indicating box (15) arranged on the outer wall of the buffer storage rack (12), a battery (17) and a singlechip (16) which are arranged in the indicating box (15) and are mutually connected, and a prompting lamp (18) arranged outside the indicating box (15) and connected with the singlechip (16); the singlechip (16) is connected with the weight sensor (14).

7. The piston inner hole honing feeding device according to claim 5, wherein a gap (20) is reserved between the buffer rack (12) and the conveying rack (1), an adapter plate (19) is arranged on the inner bottom wall of the buffer groove (13), and the adapter plate (19) passes through the gap (20) to be in contact with the conveying belt (3).

8. A piston bore honing feed device as claimed in claim 7, characterized in that the adapter plate (19) is flush with the inner bottom wall of the buffer tank (13).

9. A piston bore honing feed as claimed in claim 7, characterized in that the end of the alignment guide (4) close to the buffer frame (12) is stopped at the gap (20).

10. The piston inner hole honing feeding device according to claim 1, wherein the transfer mechanism comprises an L-shaped transfer bracket (40), a mounting seat (41) slidably mounted on the transfer bracket (40), a second cylinder (42) arranged on the transfer bracket (40) and connected with the mounting seat (41) for driving the mounting seat (41) to slide on the transfer bracket (40), a third cylinder (43) arranged on the mounting seat (41), a mounting plate (44) arranged on a telescopic rod of the third cylinder (43), and a manipulator (45) arranged on the mounting plate (44) for clamping a piston; a sliding groove (46) is formed in the transfer support (40), a sliding block (47) matched with the sliding groove (46) is arranged on the mounting seat (41), and the sliding block (47) is embedded in the sliding groove (46) in a sliding mode.