CN220864140U - Presser foot replacing device and processing equipment - Google Patents

Abstract

The utility model discloses a presser foot replacing device and processing equipment, wherein the presser foot replacing device comprises: the method is applied to pcb processing equipment, and comprises a main shaft, wherein the main shaft is provided with a presser foot, and is characterized by comprising a discharging position, and the discharging position is configured to be used for disassembling and storing an old presser foot on the main shaft; a loading level configured to store unused new presser feet and mount the new presser feet on the spindle; the unloading position is provided with a disassembly component, and the disassembly component is used for fixing the old presser foot so as to separate the old presser foot from a main shaft. The presser foot replacing device can be used for replacing worn presser feet of processing equipment, has higher automation degree, avoids the defects of poor assembly stability, low consistency and the like caused by manually replacing the presser feet, and can improve the replacing efficiency of the presser feet.

Description

Presser foot replacing device and processing equipment

Technical Field

The utility model relates to the technical field of processing equipment, in particular to a presser foot replacing device and processing equipment.

Background

In order to improve the precision, the PCB drilling machine realizes that the presser foot of the plate surface is one of key factors, in the actual production process, the contact surface of the presser foot and the plate surface is reduced in a proper range, the drilling precision is correspondingly improved, but due to the fact that the gradients of the changed drill point and the big and small holes are too large, the size presser foot switching device is arranged, the size of the drilled hole is divided into 2 gradients, and the small holes and the big holes are respectively pressed with the presser feet of different sizes. There are two general categories of existing presser foot mechanisms.

The plane presser foot switching mechanism is characterized in that the presser feet are on the same plane, so that the contact area between the presser feet and the plate surface is not reduced, but rather is increased, the contact range with the plate surface is closer to the center of the drill point, and the drilling precision is improved. Thus the presser feet are 1 independent.

And secondly, the cylindrical surface presser foot switching mechanism adopts a cylindrical surface track to realize presser foot switching, so that the problem that the contact between the large and small presser feet and the plate surface is completely and independently separated can be solved, and 2 independent large and small presser feet exist to be suitable for punching operations of drilling needles with different diameters.

The utility model relates to a structure and a function for automatically installing and detaching a presser foot, wherein the presser foot arranged on a chip suction cover has an optimized drilling precision in the PCB drilling process. However, the presser foot is worn out due to long-term work, the presser foot is replaced about 7 days in a general board factory, the presser foot is manually disassembled and then is manually filled at present, and the following 2 problems exist:

The time and the effort are wasted, the presser foot is positioned below the scrap suction cover, a worker cannot directly see the installation hole position of the presser foot, the installation is difficult, whether the installation is in place is unclear, and the investigation is difficult.

To sum up: with the increasing degree of automation and the increasing utilization of drilling machines, the function of automatically loading and unloading the presser foot is necessary. At present, presser foot structures are classified into 2 major categories, namely a plane presser foot and a cylindrical presser foot. At present, the problem points of manual unloading presser foot are as follows:

1) The time and the labor are wasted, the presser foot is positioned below the scrap suction cover, a worker cannot directly see the mounting hole position of the presser foot, the presser foot is difficult to mount, and the presser foot can only be operated one by one at a single station;

2) Whether the device is installed in place is unclear and difficult to check.

Disclosure of utility model

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model aims to provide a presser foot replacing device which improves the presser foot replacing efficiency, improves the presser foot assembling quality and reduces the safety risk of operators.

The utility model also provides processing equipment with the presser foot replacing device.

The utility model also provides a device for the processing equipment.

The presser foot replacement device according to the first aspect of the present utility model includes a main shaft provided with a presser foot, including a main shaft provided with a presser foot, characterized by comprising:

A discharge station configured for removing and storing an old presser foot on the spindle;

A loading level configured to store unused new presser feet and mount the new presser feet on the spindle;

The unloading position is provided with a disassembly component, and the disassembly component is used for fixing the old presser foot so as to separate the old presser foot from a main shaft;

The loading level is provided with a storage component which fixes the new presser foot so that the new presser foot is mounted to a main shaft. The presser foot replacing device can be used for replacing worn presser feet of processing equipment, has higher automation degree, avoids the defects of poor assembly stability, low consistency and the like caused by manual replacement of the presser feet, can improve the replacement efficiency of the presser feet, and can reduce the safety risk of operators by detecting the body into the machine and performing the dismounting operation under the main shaft compared with the prior operation of replacing the presser feet.

According to some embodiments of the utility model, the removal assembly includes a removal bar that secures the old presser foot to disengage the old presser foot from a spindle;

The storage assembly is provided with a storage bar that secures the new presser foot such that the new presser foot is mounted to a spindle.

Further, a positioning block is arranged on the storage rod and is matched with the presser foot, and the presser foot is limited on the storage rod through a positioning hole on the presser foot and the positioning block.

Further, the dismounting rod is provided with a shaft shoulder, the shaft shoulder is matched with the presser foot, and when the main shaft moves in the direction away from the shaft shoulder, the shaft shoulder can be matched with the presser foot of the main shaft in the height direction of the presser foot replacing assembly for dismounting the presser foot.

Further, the method further comprises the following steps: the presser foot mounting plate is arranged at the bottom of the main shaft, a mounting hole is formed in the presser foot mounting plate, and the mounting hole is suitable for being detachably clamped on the peripheral wall of the presser foot;

the presser foot comprises a presser foot upper end face, the presser foot upper end face is arranged on one side of the presser foot, which is close to the presser foot mounting plate, a presser foot clamping ring protruding outwards is formed on the presser foot upper end face, and the presser foot clamping ring is suitable for being abutted against the mounting hole of the presser foot mounting plate.

Further, one side of the presser foot snap ring is formed into a limiting block, a limiting groove is formed in a position, corresponding to the limiting block, of the presser foot mounting plate, an opening of the limiting groove faces the limiting block, the inner side wall of the limiting groove is suitable for being abutted against the outer peripheral wall of the limiting block, and the limiting block is matched with the limiting groove to fix the presser foot.

Further, the presser foot snap ring is made of elastic materials, and the outer diameter size of the presser foot snap ring is larger than the inner diameter size of the mounting hole.

Further, the storage assembly includes at least two blind-sized storage areas configured for storing single-sized presser feet; the main shaft is provided with a presser foot mounting plate, the presser foot mounting plate is at least provided with two presser foot mounting positions with different sizes, and each presser foot mounting position is used for mounting the presser foot with the same size

Further, a driver is disposed on the presser foot mounting plate, the driver being mounted on the spindle, the driver being configured to drive the presser foot mounting plate to move in a second direction.

The processing apparatus according to the second aspect of the present utility model includes: a work table; the processing mechanism can move relative to the workbench and comprises a main shaft and a presser foot detachably arranged on the main shaft; the presser foot replacing device is the presser foot replacing device according to the first aspect of the utility model, and the presser foot replacing device is arranged on the workbench to replace the presser foot.

According to the processing equipment provided by the utility model, the automatic degree of replacing the presser foot is improved by arranging the presser foot replacing device, the defects of poor assembly stability, low consistency and the like caused by manual replacement of the presser foot are avoided, the replacement efficiency of the presser foot can be improved, and in addition, compared with the existing operation of replacing the presser foot, the safety of operators can be improved because the body needs to be detected into the machine and the disassembly operation is performed under the main shaft.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

FIG. 1 is a schematic view of a processing apparatus according to an embodiment of the present utility model;

FIG. 2 is a schematic view of the presser foot changing device shown in FIG. 1;

FIG. 3 is a schematic view of a disassembly assembly according to a first embodiment of the utility model;

FIG. 4 is a schematic view of an assembly of a presser foot with a presser foot mounting plate in accordance with this utility model;

FIG. 5 is a schematic view of the structure of the presser foot according to the utility model;

FIG. 6 is an assembled schematic view of a storage assembly according to a first embodiment of the present utility model;

FIG. 7 is an assembled schematic view of a disassembly assembly according to a second embodiment of the utility model;

FIG. 8 is a schematic diagram of a storage assembly according to a second embodiment of the present utility model;

fig. 9 is an assembled schematic view of a storage assembly according to a second embodiment of the present utility model.

Reference numerals:

100. Processing equipment; 101. a presser foot replacement device; 1011. a base; 102. a main shaft; 1021. a chip suction cover; 1. a discharging position; 11. disassembling the assembly; 12. disassembling the rod; 13. a shaft shoulder; 131. a large presser foot shaft shoulder; 132. a small presser foot shaft shoulder; 2. feeding the material; 21. a storage assembly; 22. a storage rod; 23. a positioning block; 24. a large presser foot mounting position; 25. a small presser foot mounting position; 3. a presser foot; 31. the upper end face of the presser foot; 32. a presser foot clasp; 33. a limiting block; 4. a presser foot mounting plate; 41. a mounting hole; 42. a limit groove; 5. and a detection device.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

A presser foot changing device 101 according to an embodiment of the first aspect of the utility model is described below with reference to fig. 1 to 6.

Referring to fig. 1 and 2, a presser foot changing device 101 according to an embodiment of the first aspect of the present utility model may be used for a processing apparatus 100, the processing apparatus 100 may be a product in a PCB processing field such as a drilling machine, an edge milling machine, or a drilling and milling integrated machine for processing a PCB board, and the processing apparatus 100 may include a machine table, a workbench, a processing mechanism, and the presser foot changing device 101. The workbench is movable relative to the machine table, the processing mechanism is movable relative to the machine table, for example, the machine table can comprise a lathe bed and a cross beam, the machine table can be arranged on the lathe bed in a back-and-forth movable mode, and the processing mechanism can be arranged on the cross beam in a left-and-right movable mode.

The processing mechanism may include a main shaft 102 and a presser foot 3, where the main shaft 102 may move in an up-down direction, the presser foot 3 may be detachably disposed at one end of the main shaft 102 adjacent to the workbench, the presser foot 3 may be used to press against a workpiece when a tool of the main shaft 102 processes the workpiece to prevent the workpiece from being deviated, for example, the presser foot 3 may be in snap connection with the main shaft 102, at this time, one of the presser foot 3 and the main shaft 102 may move relatively to the other along a Z-axis direction to achieve separation, and may act in the opposite direction to achieve connection; or the presser foot 3 can be sleeved with the main shaft 102, namely, the presser foot 3 is arranged at the bottom end of the main shaft 102, at this time, one of the presser foot 3 and the main shaft 102 moves away from the other along the axial direction, so that separation can be realized, and connection can be realized through movement along the opposite direction. Of course, the utility model is not limited thereto and the presser foot 3 may be detachably engaged with the main shaft 102 by other means.

The presser foot changing device 101 may be provided on the table to change the presser foot 3, and for example, the presser foot changing device 101 may be provided on an edge of one end of the table in the front-rear direction. Alternatively, a plurality of processing stations may be provided on the workbench, the processing mechanism may include a plurality of processing stations in one-to-one correspondence, and accordingly, the presser foot replacing device 101 may include one-to-one correspondence or a plurality of processing mechanisms; the presser foot changing device 101 may be provided in one, and in this case, the presser foot changing device 101 may be configured to be movably provided on the table, thereby changing the presser foot 3 for a processing mechanism having a plurality of processing stations.

The presser foot changing device 101 is provided on a table, and for example, the presser foot changing device 101 and the table may be detachably connected, and the presser foot changing device 101 is formed with a changing position adapted to place the presser foot 3. Wherein the change station comprises a discharge station 1, the discharge station 1 being configured for removing and storing an old presser foot 3 on the spindle 102; a loading level 2, the loading level 2 being configured to store the unused new presser foot 3 and to mount the new presser foot 3 on the spindle 102;

The presser foot replacing device 101 may include a base 1011, a loading level 2 and a unloading level 1, wherein the loading level 2 and the unloading level 1 are mounted on the base 1011, and the loading level 2 and the unloading level 1 are movably disposed on the base 1011 to position the presser foot 3 at the level replacing position, that is, by moving the base 1011, not only can the position right under the presser foot 3 of the main shaft 102 to which the unloading level 1 is moved be convenient for separating the main shaft 102 from the presser foot 3, but also the position right under the presser foot 3 of the main shaft 102 to which the loading level 2 is moved be convenient for mounting and fixing the main shaft 102 and the presser foot 3. The drive member is in driving connection with the loading level 2 and the unloading level 1, so that the drive member can move the loading level 2 and the unloading level 1 to fix or release the presser foot 3.

In addition to this; the presser foot replacing device 101 may include a base 1011, a loading level 2 and a unloading level 1, where the loading level 2 and the unloading level 1 are mounted on the base 1011, and the loading level 2 and the unloading level 1 are fixedly disposed on the base 1011 to position the presser foot 3 at the level of replacement, that is, by moving the main shaft 102 movably, the main shaft 102 can be moved to a position directly above the presser foot 3 of the unloading level 1 so as to separate the main shaft 102 from the presser foot 3, or the main shaft 102 can be moved to a position directly above the presser foot 3 of the loading level 2 so as to fix the main shaft 102 and the presser foot 3. The driving member can be connected with the loading position 2 and the unloading position 1 through buckles.

With reference to fig. 3-4; specific: the main shaft 102 of the drilling machine is provided with a chip suction cover 1021, the chip suction cover 1021 is provided with a presser foot 3, and the main shaft 102 can drive the chip suction cover 1021 to move together. The drilling machine is provided with a presser foot replacing device 101, the presser foot replacing device 101 comprises a base 1011, the base 1011 is provided with a feeding level 2 and a discharging level 1, and the feeding level 2 and the discharging level 1 can be mutually connected and arranged or can be separated and independently arranged. Specifically, a plurality of loading and unloading positions 2 and 1 may be provided on the drilling machine according to the actual situation of the drilling machine. The unloading bit 1 is provided with a disassembling component 11, the presser foot 3 on the main shaft 102 can move to the position right above the disassembling component 11, the disassembling component 11 comprises a disassembling rod 12, the old presser foot 3 is fixed by the disassembling rod 12 so as to separate the old presser foot 3 from the main shaft 102, a shaft shoulder 13 is arranged on the disassembling rod 12, the shaft shoulder 13 is matched with the presser foot 3, and when the main shaft 102 moves in the direction away from the shaft shoulder 13, the shaft shoulder 13 can be matched with the presser foot 3 of the chip suction cover 1021 along the height direction of the presser foot replacing device 101 for disassembling the presser foot 3. The shaft shoulder 13 can play a limiting role on the presser foot 3, and meanwhile, the shaft shoulder 13 enables the presser foot 3 to be kept on the dismounting rod 12, so that the presser foot 3 is separated from the main shaft 102, and the dismounting process of the presser foot 3 on the main shaft 102 is completed. The removed presser foot 3 is temporarily stored in the removing rod 12, and the removing rod 12 is provided with a certain height, so that the presser foot 3 temporarily stored in the suction cover 1021 and taken out can be removed. When the presser foot 3 on the spindle 102 is detached.

Referring to fig. 6, the loading level 2 includes a plurality of storage assemblies 21, the storage assemblies 21 being provided with storage bars 22 extending in a direction along a line lying against the main shaft 102. The storage rod 22 further comprises a mounting seat, the storage rod 22 is mounted on the base 1011 through the mounting seat, a positioning block 23 is arranged on the storage rod 22, and the positioning block 23 is matched with a positioning hole on the presser foot 3, so that the presser foot 3 is fixed on the storage rod 22 in the same direction. When the main shaft 102 moves in a direction approaching to the storage rod 22, the positioning block 23 can be matched with the presser foot 3 of the chip suction cover 1021 along the height direction of the chip suction cover 1021, the storage rod 22 can be abutted against the presser foot 3, and as the main shaft 102 continues to move, the storage rod 22 can play a limiting role on the presser foot 3, so that the presser foot 3 is kept on the dismounting rod 12, the presser foot 3 is separated from the main shaft 102, and the dismounting process of the presser foot 3 on the main shaft 102 is completed. The removed presser foot 3 is temporarily stored in the removing rod 12, and the removing rod 12 is provided with a certain height, so that the presser foot 3 temporarily stored in the suction cover 1021 and taken out can be removed. When the presser foot 3 on the spindle 102 is detached, the loading level 2 comprises a plurality of storage assemblies 21, the storage assemblies 21 being provided with detachment extending in a direction along the line of the spindle 102.

The application is suitable for fixing the presser foot 3 to be replaced on the main shaft 102 at the unloading position 1 through arranging the presser foot 3 positioning piece of the unloading position 1 and the loading position 2 so as to be matched with the main shaft 102 to separate the presser foot 3 from the main shaft 102; the presser foot 3 positioning member is adapted to fix the presser foot 3 to be mounted at the loading level 2 to fit the main shaft 102 with the presser foot 3. Through setting up two reloading positions of unloading position 1 and material loading position 2, can separate the dismantlement and the installation of presser foot 3 for the change of presser foot 3 is more orderly, and easier control also is convenient for will wait to install the presser foot 3 place in material loading position 2 when dismantling presser foot 3, thereby promotes presser foot 3 and changes efficiency.

Meanwhile, when the main shaft 102 finishes unloading the old presser foot 3, the main shaft 102 can continue to move to the position of the loading position 2, the unused presser foot 3 is stored in the loading position 2, and the main shaft 102 can be matched with the unused presser foot 3, so that the presser foot 3 is mounted on the main shaft 102, and the replacement of the presser foot 3 is finished. Through set up presser foot change device 101 on the drilling machine, reduced the demand of labour, not only improved the precision and the change efficiency that presser foot 3 changed, still be favorable to promoting degree of automation. Meanwhile, the presser foot replacing device 101 is beneficial to improving the frequency of replacing the presser foot 3 on the main shaft 102, reducing the possibility of excessive abrasion of the presser foot 3, and further reducing the possibility of poor drilling and chip removal when the drilling machine processes a circuit board. And the failure rate of the drilling machine is reduced, and the processing efficiency and the production quality of the circuit board are improved.

According to the presser foot replacing device 101 provided by the embodiment of the utility model, the presser foot replacing device can be used for replacing the worn presser foot 3 of the processing equipment 100, the degree of automation is high, the defects of poor assembly stability, low consistency and the like caused by manual replacement of the presser foot 3 are avoided, the replacement efficiency of the presser foot 3 can be improved, in addition, compared with the existing operation of replacing the presser foot 3, the body is required to be detected into the machine, the disassembly operation is performed under the main shaft 102, and the safety of operators can be improved.

Alternatively, referring to fig. 1-2, the presser foot replacing device 101 is detachably mounted on the workbench, and the detaching assembly 11 comprises a detaching lever 12, and the detaching lever 12 fixes the old presser foot 3 so as to separate the old presser foot 3 from a main shaft 102; the storage assembly 21 is provided with a storage bar 22, the storage bar 22 securing the new presser foot 3 such that the new presser foot 3 is mounted to a spindle 102. The storage assembly 21 and the dismounting assembly 11 may use the same base 1011, and the base 1011 may be detachably connected to the workbench, and in this embodiment, the bolts are used for connection, but not limited thereto; the storage rod 22 and the dismounting rod 12 are respectively arranged on two sides of the base 1011, wherein a plurality of bolt holes are formed on the base 1011, the plurality of bolt holes are arranged at intervals along the circumferential direction of the mounting seat, a plurality of matching holes are formed on the workbench, the matching holes and the bolt holes are in one-to-one correspondence, and the mounting seat and the workbench sequentially penetrate through the bolt holes and the matching holes through bolt fasteners to realize connection.

In addition, according to the requirements, the storage component 21 and the dismounting component 11 can use different bases 1011, so that the working layout on the drilling machine is more diversified, and the loading level 2 and the unloading level 1 can be arranged at different positions according to the actual operation and the actual requirements; so that the processing technology and the presser foot 3 replacement technology are more diversified. And the degree of automation is improved. Meanwhile, the presser foot replacing device 101 is beneficial to improving the frequency of replacing the presser foot 3 on the main shaft 102, reducing the possibility of excessive abrasion of the presser foot 3, and further reducing the possibility of poor drilling and chip removal when the drilling machine processes a circuit board. And the failure rate of the drilling machine is reduced, and the processing efficiency and the production quality of the circuit board are improved.

Optionally, referring to fig. 6, the storage rod 22 is provided with a positioning block 23, the positioning block 23 is matched with the presser foot 3, and the presser foot 3 is limited on the storage rod 22 through a positioning hole and the positioning block 23. The presser foot replacing device 101 can be only provided with a plurality of presser foot replacing devices 101, and one side of a processing area on each workbench is provided with the presser foot replacing device 101, so that the presser foot 3 in a single processing area is replaced conveniently and rapidly. One side of the storage rod 22 is provided with a positioning block 23, the positioning block 23 can be formed by protruding outwards along the radial direction of the peripheral wall of the storage rod 22, a positioning hole of the presser foot 3 is suitable for being pressed against the positioning block 23 of the storage rod 22, that is, in the process of replacing the presser foot 3, the positioning block 23 can be combined with Zhou Bika of a new presser foot 3 to enable the presser foot 3 to be stored on the storage rod 22 in the same direction, meanwhile, the positioning block 23 plays a limiting role, and the presser foot 3 is prevented from rotating in the process of being mounted in a compression fit manner with the chip suction cover 1021 of the main shaft 102, so that the positioning of the presser foot 3 can be realized, the stability of the presser foot 3 is higher, the presser foot 3 is prevented from being misplaced when contacting the main shaft 102, the installation or the mounting effect is poor, and the workpiece is difficult to be effectively pressed in the process, and the processing precision of the workpiece is reduced.

Optionally, the dismounting rod 12 is provided with a shoulder 13, the shoulder 13 is matched with the presser foot 3, and when the spindle 102 moves in a direction away from the shoulder 13, the shoulder 13 can be matched with the presser foot 3 of the spindle 102 along the height direction of the presser foot replacing device 101 for dismounting the presser foot 3. According to the actual conditions of the drilling machine, the disassembly rod 12 is provided with the shaft shoulder 13, the shaft shoulder 13 is positioned on the side wall of the disassembly rod 12, so that a T-shaped structure can be formed, the presser foot 3 can be positioned on the periphery of the T-shaped groove, the shaft shoulder 13 plays a limiting role on the presser foot 3, when the presser foot 3 on the main shaft 102 is positioned on the periphery of the disassembly rod 12, and when the main shaft 102 moves along the height direction Z of the disassembly rod 12 away from one side of the disassembly rod 12, the shaft shoulder 13 is abutted with the presser foot 3, and as the main shaft 102 continues to move, the shaft shoulder 13 plays a limiting role on the presser foot 3, so that the presser foot 3 is kept in the disassembly rod 12, and the presser foot 3 is separated from the main shaft 102, so that the disassembly process of the presser foot 3 on the main shaft 102 is completed. The removed presser foot 3 is temporarily stored on the removal lever 12, the removal lever 12 is detachable from the base 1011, and the presser foot 3 on the removal lever 12 can be taken out after the baffle is removed. Through set up presser foot change device 101 on the drilling machine, reduced the demand of labour, not only improved the precision and the change efficiency that presser foot 3 changed, still be favorable to promoting degree of automation. Meanwhile, the presser foot replacing device 101 is beneficial to improving the frequency of replacing the presser foot 3 on the main shaft 102, reducing the possibility of excessive abrasion of the presser foot 3, and further reducing the possibility of poor drilling and chip removal when the drilling machine processes a circuit board. And the failure rate of the drilling machine is reduced, and the processing efficiency and the production quality of the circuit board are improved.

According to some embodiments of the present utility model, referring to fig. 4, the presser foot mounting plate 4 is disposed at the bottom of the spindle 102, the presser foot mounting plate 4 is provided with a mounting hole 41, and the mounting hole 41 is adapted to detachably clamp the peripheral wall of the presser foot 3; the presser foot 3 comprises a presser foot upper end face 31, the presser foot upper end face 31 is arranged on one side of the presser foot 3, which is close to the presser foot mounting plate 4, a presser foot clamping ring 32 protruding outwards is formed on the presser foot upper end face 31, and the presser foot clamping ring 32 is suitable for being abutted against a mounting hole 41 of the presser foot mounting plate 4. The limiting block 33 is arranged on the presser foot snap ring 32, the limiting groove 42 can comprise one or more than two limiting grooves 42, the limiting grooves 42 are positioned on one side or two opposite sides of the motion direction of the presser foot mounting plate 4, for example, when the presser foot 3 slides in the mounting hole 41 of the foot mounting plate along the direction of the main shaft 102, the limiting block 33 is positioned on one side of the main shaft 102 of the presser foot snap ring 32 perpendicular to the sliding direction of the main shaft, and the limiting block 33 is in sliding fit with the positioning groove of the presser foot 3, so that the presser foot 3 and the mounting hole 41 of the presser foot mounting plate 4 are in sliding guide, and therefore, the occurrence of blocking of the presser foot 3 in the motion process or deviation from the set motion track can be prevented, and the operation stability of the presser foot replacing device 101 is further improved.

Preferably, the presser foot snap ring 32 is an elastic material, and the outer diameter dimension of the presser foot snap ring 32 is larger than the inner diameter dimension of the mounting hole 41. The presser foot 3 is arranged in the presser foot 3 mounting hole 41 in the scraps suction cover 1021 assembly, and the outer diameter size of the presser foot clamping ring 32 is larger than the inner large circle diameter size of the presser foot 3 mounting hole 41 in the scraps suction cover 1021 assembly, so that the presser foot clamping ring 32 plays a role in fixing; a certain pressure is required to press the presser foot 3 into the presser foot 3 mounting hole 41 in the chip suction cap 1021 assembly.

Preferably, the loading level 2 further comprises a rebound portion disposed at the bottom of the storage assembly 21, wherein the storage bar 22 is connected to the top of the rebound portion, the rebound portion being configured for driving the storage bar 22 along the storage assembly 21. The rebound portion includes a rebound block and an elastic member, the rebound block upper surface being detachably connected with the storage rod 22. The rebound block and the resilient member are interconnected, the resilient member may be a spring, the resilient member being capable of driving the rebound block along the reservoir assembly 21. The rebound block is located in the storage assembly 21 when the elastic member is in the contracted state and can be pushed out of the storage assembly 21 by the elastic member when the elastic member is in the extended state, i.e. at least part of the rebound block can be located inside the loading level 2. The storage lever 22 can be in contact with the presser foot 3 of the loading level 2.

In this embodiment, a specific main shaft 102 is provided with a chip suction cover 1021, a presser foot 3 is provided on the chip suction cover 1021, and the main shaft 102 can drive the chip suction cover 1021 to move together. The drilling machine is provided with a presser foot replacing device 101, the presser foot replacing device 101 comprises a base 1011, the base 1011 is provided with a loading position 2 and a discharging position 1, the presser foot 3 on the main shaft 102 can move to the position right above the detaching assembly 11, the detaching assembly 11 comprises a detaching rod 12, the detaching rod 12 is used for fixing the old presser foot 3 so that the old presser foot 3 is detached from the main shaft 102, a shaft shoulder 13 is arranged on the detaching rod 12, the shaft shoulder 13 is matched with the presser foot 3, and when the main shaft 102 moves in a direction away from the shaft shoulder 13, the shaft shoulder 13 can be matched with the presser foot 3 of the chip suction cover 1021 along the height direction of the presser foot replacing device 101 for detaching the presser foot 3. The process of detaching the presser foot 3 on the main shaft 102 is completed. The removed presser foot 3 is temporarily stored in the removing rod 12, and the removing rod 12 is provided with a certain height, so that the presser foot 3 temporarily stored in the suction cover 1021 and taken out can be removed. When the presser foot 3 on the spindle 102 is detached. When the main shaft 102 finishes unloading the old presser foot 3, the main shaft 102 can continue to move to a position of a loading position 2, the loading position 2 stores unused presser feet 3, the main shaft 102 can be matched with the unused presser feet 3, so that the presser feet 3 are mounted on the main shaft 102, the replacement of the presser feet 3 is finished, specifically, the main shaft 102 can drive the chip suction cover 1021 to move together and move right above the loading position 2, then the main shaft 102 drives the presser feet 3 to descend along the direction of the main shaft 102 until the presser feet 3 are tightly attached to mounting holes 41 on the presser foot mounting plate 4, at the moment, the main shaft 102 continues to descend along the direction of the main shaft 102, and the presser feet 3 and the chip suction cover 1021 are mounted by extruding the presser foot clamping ring 32 into the mounting holes 41 under certain pressure; and then the main shaft 102 ascends along the direction of the main shaft 102, so that the presser foot 3 is separated from the storage rod 22, the feeding of the new presser foot 3 is completed, and the limiting block 33 of the presser foot 3 can be matched with the limiting hole of the chip suction cover 1021 along the height direction of the chip suction cover 1021, thereby playing a good role in positioning and preventing deflection. Through set up presser foot change device 101 on the drilling machine, reduced the demand of labour, not only improved the precision and the change efficiency that presser foot 3 changed, still be favorable to promoting degree of automation. Meanwhile, the presser foot replacing device 101 is beneficial to improving the frequency of replacing the presser foot 3 on the main shaft 102, reducing the possibility of excessive abrasion of the presser foot 3, and further reducing the possibility of poor drilling and chip removal when the drilling machine processes a circuit board. And the failure rate of the drilling machine is reduced, and the processing efficiency and the production quality of the circuit board are improved. Meanwhile, additional movable parts such as an additional air cylinder and an additional motor are reduced, and the device is simple in structure and reliable and practical to install.

Further, the chip suction cover 1021 is arranged on the main shaft 102 assembly through a lifting cylinder, moves up and down along with a lifting motor of the main shaft 102, and can move up and down relative to the main shaft 102 under the action of the lifting cylinder.

Further, the main shaft 102 assembly mainly comprises: the main shaft 102 lifting motor, the main shaft 102 and the chip suction cover 1021 are assembled. The spindle 102 assembly is disposed on the X-axis assembly; the X-axis assembly can move on the X-axis supporting and guiding assembly; the presser foot 3 dismounting component is arranged on the workbench underframe, and the workbench underframe is arranged on the workbench supporting and guiding component and can move on the workbench underframe. The attachment/detachment assembly 11 of the presser foot 3 includes: a storage assembly 21, a dismounting assembly 11; the storage assembly 21 includes a storage rod 22; the disassembly assembly 11 comprises a disassembly rod 12;

Further, in combination with fig. 2, the presser foot replacement device further comprises a detection device 5, the detection device 5 is used for re-pressing detection, the lifting cylinder of the plane chip suction cover 1021 assembly is in an extending state, the main shaft 102 assembly drives the plane chip suction cover 1021 to descend to a set height, a certain rebound amount of the lifting cylinder is 1-2mm, the rebound amount of the lifting cylinder is inconsistent due to the fact that the height from the plane chip suction cover 1021 to a designated position is inconsistent due to the existence of the presser foot 3, if a signal exists in a detection switch, the installation is successful, and if no signal feedback exists. The detection device 5 is mounted on the base 1011 on one side of the loading level 2 and the unloading level 1.

The presser foot 3 is arranged in a presser foot 3 mounting hole 41 in the scraps suction cover 1021 assembly, wherein a limiting block 33 of the presser foot 3 and a limiting groove 42 of the presser foot 3 in the scraps suction cover 1021 assembly play a role in positioning the presser foot 3. The presser foot mounting plate 4 in the presser foot 3 is matched with the presser foot 3 limiting surface in the scraps suction cover 1021 assembly, and the presser foot clamping ring 32 plays a role in fixing because the outer diameter size of the presser foot clamping ring 32 is larger than the inner large-circle diameter size of the presser foot 3 mounting hole 41 in the scraps suction cover 1021 assembly; a certain pressure is required to press the presser foot 3 into the presser foot 3 mounting hole 41 in the chip suction cap 1021 assembly.

The outer big circle and the outer small circle of the storage rod 22 in the storage assembly 21 are matched with the inner big circle and the inner small circle of the presser foot 3 respectively to play a role in positioning the presser foot 3, and the outer big circle and the outer small circle of the presser foot 3 have a relatively high-precision position relationship with the positioning boss of the presser foot 3, so that the positioning boss of the presser foot 3 corresponds to the positioning groove of the presser foot 3 in the plane chip suction cover 1021 assembly.

The features of the removal bar 12 of the presser foot 3 removal assembly 11 include: the diameter of the small diameter shaft is smaller than that of the shaft shoulder 13, and the difference between the diameters is generally 1-4mm. The height of the small diameter shaft determines the number of the stored presser feet 3, the number of the stored presser feet 3 is less than or equal to 5 in the embodiment, the stored number is not limited, and the stored number of the presser feet 3 is in direct proportion to the length of the small diameter shaft.

The number of presser feet 3 can be stored on the storage lever 22: and is more than or equal to 1. In this example, there are 2, but not limited to, the number of the presser feet 3 stored is proportional to the length of the storage lever 22.

The present embodiment is mainly used for the planar chip suction cover 1021, and can be applied to chip suction covers 1021 with other structures according to practical requirements.

In this embodiment: 1. the disassembly process of the plane presser foot 3 and the structure thereof: the lifting cylinder of the plane chip suction cover 1021 assembly is in an extending state, the chip suction cover 1021 assembly moves to the upper side of the detaching rod 12, namely, the big circle of the plane presser foot 3 on the chip suction cover 1021 is coaxial with the big circle of the detaching rod 12, and the main shaft 102 assembly drives the chip suction cover 1021 assembly to descend to a proper position, namely, the lower end face of the shaft shoulder 13 of the detaching rod 12 is higher than the upper end face 311-2mm of the presser foot; the plane chip suction cover 1021 assembly moves 0.5-2mm relative to the disassembly rod 12; the main shaft 102 assembly is lifted or the lifting cylinder of the plane chip suction cover 1021 assembly is retracted, so that the plane chip suction cover 1021 assembly is lifted, the plane presser foot 3 is limited by the lower end surface of the shaft shoulder 13 of the dismounting rod 12, and the plane presser foot 3 is dismounted. And the disassembled presser foot 3 is sleeved in the disassembling rod 12 and can buffer 4-5 presser feet.

The installation process and the structure of the plane presser foot 3:

Manually placing a plurality of plane presser feet 3 (1-4) in the guide rod in advance; the special-shaped holes in the plane presser foot 3 are matched with the outer wall of the guide rod to realize the positioning function of the plane presser foot 3. Since the planar presser foot 3 is not a revolution body and has a certain directivity, the positioning of the outer shape is required.

The lifting cylinder of the plane chip suction cover 1021 assembly is in an extending state, the chip suction cover 1021 assembly moves to the upper side of the guide rod, namely, the large circle of the plane presser foot 3 on the plane chip suction cover 1021 is coaxial with the large circle of the guide rod, the spindle 102 assembly drives the plane chip suction cover 1021 assembly to descend to a certain position, and the contact between the presser foot mounting plate 4 on the plane chip suction cover 1021 assembly and the upper mounting surface of the plane presser foot 3 is ensured. The planar presser foot 3 is pressed into the mounting hole 41 of the planar presser foot 3 by the pressing force of the lifting cylinder of the planar chip suction cover 1021 assembly. After the installation is finished, the back pressure detection is carried out, the lifting cylinder of the plane chip suction cover 1021 assembly is in an extending state, the main shaft 102 assembly drives the plane chip suction cover 1021 to descend to a set height, the lifting cylinder has a certain rebound quantity of 1-2mm, the rebound quantity of the lifting cylinder is inconsistent due to the fact that the height from the plane chip suction cover 1021 to a designated position is inconsistent due to the existence of the presser foot 3, if a signal exists in the detection switch, the installation is successful, if no signal feedback exists, the installation is unsuccessful, and the actions are circulated. The presser foot replacing device 101 is beneficial to improving the frequency of replacing the presser foot 3 on the main shaft 102, reducing the possibility of excessive abrasion of the presser foot 3, and further reducing the possibility of poor drilling and chip removal when the drilling machine processes a circuit board. And the failure rate of the drilling machine is reduced, and the processing efficiency and the production quality of the circuit board are improved. Meanwhile, additional movable parts such as an additional air cylinder and an additional motor are reduced, and the device is simple in structure and reliable and practical to install.

With reference to fig. 1, 7-9; in this second embodiment: the storage assembly 21 comprises at least two storage areas of non-passing size configured for storing single-sized presser feet 3; at least two presser foot 3 mounting positions with different sizes are arranged on the main shaft 102, and each presser foot 3 mounting position is used for mounting the presser foot 3 with the same size. The storage assembly 21 includes at least two storage areas storing the dead-end size presser foot 3, each storage area being configured for storing a single size presser foot 3; the spindle 102 is provided with a presser foot mounting plate 4, and the presser foot mounting plate 4 is provided with at least two presser foot 3 mounting positions with different sizes, and each presser foot 3 mounting position is used for mounting the presser foot 3 with the same size.

The presser foot mounting plate 4 is provided with a drive mounted on the spindle 102, the drive being configured to move the presser foot mounting plate 4 in the second direction. The driver is used for controlling the switching of the mounting position of the presser foot 3 of the presser foot mounting plate 4. The presser foot 3 of the unnecessary size is switched according to the actual requirement.

Specifically, the driver has a cylinder structure, and the driver can drive the switching of the mounting position of the presser foot 3 by the cylinder, and besides, the driver can also be a motor or the like.

In this embodiment, the storage area includes at least one large presser foot 3 and one small presser foot 3, and the storage area is correspondingly provided with a large presser foot mounting position 24 and a small presser foot mounting position 25 specifically:

The embodiment is mainly used for cylindrical chip suction cover 1021 components; the cylindrical chip suction cover 1021 component is arranged on the main shaft 102 component through a lifting cylinder thereof; the rest movement relation is consistent with the plane chip suction cover 1021;

In this embodiment, in combination with the cylindrical chip suction cover 1021 assembly of fig. 8, there is a separate presser foot mounting location, respectively: the large presser foot mounting position 24 and the small presser foot mounting position 25 are respectively correspondingly provided with the large presser foot 3 and the small presser foot 3. The coaxial states of the large presser foot 3 and the small presser foot 3 and the main shaft 102 are switched by the cylinder. When the large presser foot 3 is required to be detached and installed, the cylinder needs to act to enable the outer circle of the large presser foot 3 to be coaxial with the main shaft 102; the same applies to the small presser foot 3.

The small presser foot mounting location 25 includes a storage small circular wall; the large presser foot mounting location 24 includes a storage large circular wall;

the assembly and disassembly assembly of the cylindrical presser foot 3 comprises: a storage assembly 21, a dismounting assembly 11;

Wherein the storage assembly 21 is designed to be compatible with the storage of the seed presser 3, and the disassembly assembly 11 is designed to be compatible with the disassembly of the seed presser 3; thus, each time the presser foot 3 needs to be replaced, a corresponding type of presser foot 3 needs to be placed in the storage assembly 21; the detached presser foot 3 needs to be manually retracted after each detachment of the large and small presser foot 3.

The diameter of the outer circular wall of the large presser foot 3 is smaller than that of the outer circular wall of the small presser foot 3, and the diameter of the inner circular wall of the large presser foot 3 is larger than that of the inner hole of the small presser foot 3; the inner circular wall of the large presser foot 3 is matched with the small storage circular wall in the storage assembly 21 to complete the positioning and placing functions; the outer circular wall of the small presser foot 3 is matched with the large circular wall stored in the storage assembly 21, so that the positioning and placing functions of the small presser foot 3 are completed;

the shoulder pad of the disassembly component 11 comprises a small presser foot shaft shoulder 131 and a small presser foot shaft shoulder 132, wherein the small presser foot shaft shoulder 131 and the small presser foot shaft shoulder 132 are coaxially arranged and are all arranged on the same disassembly rod 12, or the small presser foot shaft shoulder 131 and the small presser foot shaft shoulder 132 can be separately arranged and are positioned on different disassembly rods 12.

The diameter of the inner circular wall of the large presser foot 3 is larger than the diameter of the inner hole of the small presser foot 3, and then the diameter of the outer circular wall of the large presser foot 3=the outer circular wall of the small presser foot 3 can be designed as follows: the outer circular wall of the large presser foot 3 is matched with the large storage circular wall in the storage assembly 21 to complete the positioning and placing functions.

In the present embodiment, the process of detaching the cylindrical presser foot 3 and its structure: the method comprises the steps of manually placing a large presser foot 3, disassembling the large presser foot 3, installing the large presser foot 3, manually placing a small presser foot 3, disassembling the small presser foot 3 and installing the small presser foot 3

Referring to fig. 9, a left side view of the large presser foot installation schematic diagram and the installation process of the large presser foot 3: the lifting cylinder of the cylindrical chip suction cover 1021 assembly is in an extending state in the detaching process of the large presser foot 3, the presser foot 3 is switched to the position of the large presser foot 3 (namely, the position of the large presser foot 3 coaxial with the main shaft 102), the chip suction cover 1021 assembly moves to the position above the detaching rod 12, namely, the position of an inner hole circle of the large presser foot 3 on the chip suction cover 1021 is coaxial with the detaching rod 12, the main shaft 102 assembly drives the chip suction cover 1021 assembly to descend to a proper position, namely, the lower end face of the small presser foot shaft shoulder 131 of the detaching rod 12 is higher than the upper end face 31 a=1-2 mm; the cylindrical chip suction cover 1021 assembly moves by c=0.5-2 mm relative to the disassembly rod 12; when the main shaft 102 assembly is lifted or the lifting cylinder of the plane chip suction cover 1021 assembly is retracted to lift the cylindrical chip suction cover 1021 assembly, the large presser foot 3 is limited by the lower end face of the small presser foot shaft shoulder 131 of the dismounting rod 12, so that the large presser foot 3 is separated from the mounting position of the cylindrical chip suction cover 1021 assembly, and the dismounting is completed.

The installation process of the large presser foot 3 comprises the following steps: the large presser foot 3 is manually placed in the inner wall of the positioning groove of the presser foot 3 seat, and the positioning function is realized by utilizing the inner circle or the outer circle of the large presser foot 3. The lifting cylinder of the cylindrical chip suction cover 1021 assembly is in an extending state, the presser foot 3 is switched to the position of the large presser foot 3 (namely, the position of the large presser foot 3 coaxial with the main shaft 102), the cylindrical chip suction cover 1021 assembly moves to the position above the positioning groove of the presser foot 3 seat, namely, the position of the large presser foot 3 great circle on the cylindrical chip suction cover 1021 and the position of the large circle of the guide rod are coaxial, the main shaft 102 assembly drives the cylindrical chip suction cover 1021 assembly to descend to a certain position, and the contact between the limiting surface of the large presser foot 3 on the cylindrical chip suction cover 1021 assembly and the upper mounting surface of the large presser foot 3 is ensured. The large presser foot 3 is pressed into the large presser foot mounting position 24 of the cylindrical presser foot 3 by the downward pressure of the lifting cylinder of the cylindrical surface chip suction cover 1021 assembly. The presser foot 3 is matched with the cylindrical chip suction cover 1021: the elastic sealing ring is matched with a special round hole of the cylindrical chip suction cover 1021 for fixation so as to achieve the aim of quick replacement. Because the large/small presser foot 3 is not necessarily pressed into the large/small presser foot mounting position 25 by 1 time of extrusion, there is a risk that a repeated re-pressing mode can be adopted: the main shaft 102 component lifts the cylindrical chip suction cover 1021 component by 1-3mm, presses down again, and repeats for 5-7 times. After the installation is finished, the back pressure detection is carried out, the lifting cylinder of the cylindrical chip suction cover 1021 assembly is in an extending state, the main shaft 102 assembly drives the cylindrical chip suction cover 1021 to descend to a set height, the lifting cylinder has a certain rebound quantity of 1-2mm, the rebound quantity of the lifting cylinder is inconsistent due to the fact that the existence of the presser foot 3 and the inconsistency of the height of the cylindrical chip suction cover 1021 to a designated position, if a detection switch has a signal, the installation is successful, if no signal feedback exists, the registration installation is unsuccessful, and the actions are circulated.

In connection with the disassembly process of the small presser foot 3 of fig. 7: the lifting cylinder of the cylindrical chip suction cover 1021 assembly is in an extending state, the presser foot 3 is switched to the position of the small presser foot 3 (namely, the position of the small presser foot 3 coaxial with the main shaft 102), the chip suction cover 1021 assembly moves to the position above the detaching rod 12, namely, the position of the inner hole circle of the small presser foot 3 on the chip suction cover 1021 coaxial with the detaching rod 12, the main shaft 102 assembly drives the chip suction cover 1021 assembly to descend to a proper position, namely, the lower end surface of the small presser foot shaft shoulder 132 of the detaching rod 12 is higher than the upper end surface 31 b=1-2 mm of the small presser foot; the cylindrical chip suction cover 1021 assembly moves by d=0.5-2 mm relative to the disassembly rod 12; when the main shaft 102 assembly is lifted or the lifting cylinder of the plane chip suction cover 1021 assembly is retracted to lift the cylindrical chip suction cover 1021 assembly, the large presser foot 3 is limited by the lower end face of the small presser foot shaft shoulder 131 of the dismounting rod 12, so that the large presser foot 3 is separated from the mounting position of the cylindrical chip suction cover 1021 assembly, and the dismounting is completed.

With reference to fig. 9, a right side view of the installation of the large presser foot is schematically shown, and the installation process of the small presser foot 3 is as follows: the installation process of the small presser foot 3 is consistent with the installation process of the large presser foot 3; the small presser foot 3 is positioned as follows: the positioning function is realized by the outer circular wall of the small presser foot 3 and the inner wall of the positioning groove of the presser foot 3 seat.

The working flow of the presser foot replacement device 101 of the present utility model is as follows: when the presser foot 3 needs to be replaced by the processing equipment 100, the processing mechanism can be controlled to move to a material replacing position, then the driving piece is controlled to drive the presser foot 3 positioning piece to position the presser foot 3 on the main shaft 102, then the main shaft 102 is controlled to rotate relative to the presser foot 3 and slowly lift the main shaft 102, and the main shaft 102 can be separated from the presser foot 3; the presser foot 3 to be mounted is placed at the change position, and then the main shaft 102 is lowered while the main shaft 102 is rotated in the opposite direction, so that the presser foot 3 is mounted to the main shaft 102.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; the device can be mechanically connected, electrically connected and communicated; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. The utility model provides a presser foot changing device, includes the main shaft, the main shaft is provided with the presser foot, its characterized in that includes:

A discharge station configured for removing and storing an old presser foot on the spindle;

A loading level configured to store unused new presser feet and mount the new presser feet on the spindle;

The unloading position is provided with a disassembly component, and the disassembly component is used for fixing the old presser foot so as to separate the old presser foot from a main shaft;

The loading level is provided with a storage component which fixes the new presser foot so that the new presser foot is mounted to a main shaft.

2. The presser foot changing device as claimed in claim 1, wherein,

The dismounting assembly comprises a dismounting rod, wherein the dismounting rod is used for fixing the old presser foot so as to separate the old presser foot from a main shaft;

The storage assembly is provided with a storage bar that secures the new presser foot such that the new presser foot is mounted to a spindle.

3. The presser foot changing device according to claim 2, wherein a positioning block is provided on the storage lever, the positioning block is matched with the presser foot, and the presser foot is limited on the storage lever through a positioning hole on the presser foot and the positioning block.

4. The presser foot changing device according to claim 2, wherein the dismounting lever is provided with a shoulder which cooperates with the presser foot, and when the main shaft moves in a direction away from the shoulder, the shoulder can cooperate with the presser foot of the main shaft in a height direction of the presser foot changing assembly for dismounting the presser foot.

5. The presser foot changing device of claim 4, further comprising: the presser foot mounting plate is arranged at the bottom of the main shaft, a mounting hole is formed in the presser foot mounting plate, and the mounting hole is suitable for being detachably clamped on the peripheral wall of the presser foot;

the presser foot comprises a presser foot upper end face, the presser foot upper end face is arranged on one side of the presser foot, which is close to the presser foot mounting plate, a presser foot clamping ring protruding outwards is formed on the presser foot upper end face, and the presser foot clamping ring is suitable for being abutted against the mounting hole of the presser foot mounting plate.

6. The presser foot changing device according to claim 5, wherein one side of the presser foot snap ring is formed into a stopper block, a stopper groove is formed in a position of the presser foot mounting plate corresponding to the stopper block, an opening of the stopper groove faces the stopper block, an inner side wall of the stopper groove is adapted to be stopped against an outer peripheral wall of the stopper block, and the stopper block is engaged with the stopper groove to fix the presser foot.

7. The presser foot changing device of claim 5 wherein the presser foot snap ring is an elastomeric material, the presser foot snap ring having an outer diameter dimension greater than an inner diameter dimension of the mounting hole.

8. The presser foot changing device of claim 1 wherein said storage assembly includes at least two storage areas storing a dead-end size presser foot, each said storage area being configured for storing a single size presser foot; the main shaft is provided with a presser foot mounting plate, the presser foot mounting plate is at least provided with two presser foot mounting positions with different sizes, and each presser foot mounting position is used for mounting the presser foot with the same size.

9. The presser foot changing device of claim 8 wherein a driver is provided on said presser foot mounting plate, said driver being mounted on said spindle, said driver being configured for moving the presser foot mounting plate in a second direction.

10. A processing apparatus, comprising:

A work table;

The processing mechanism can move relative to the workbench and comprises a main shaft and a presser foot detachably arranged on the main shaft;

A presser foot changing device according to any one of claims 1 to 9, provided to the table to change the presser foot.