CN113784538A

CN113784538A - Chip mounter, material tray replacing device and material tray replacing method

Info

Publication number: CN113784538A
Application number: CN202110218052.6A
Authority: CN
Inventors: 张囝; 杨嘉琪; 邵国富; 于宗靖
Original assignee: Beijing Jingdong Qianshi Technology Co Ltd
Current assignee: Beijing Jingdong Qianshi Technology Co Ltd
Priority date: 2021-02-26
Filing date: 2021-02-26
Publication date: 2021-12-10
Anticipated expiration: 2041-02-26
Also published as: CN113784538B

Abstract

The disclosure relates to a chip mounter, a tray replacing device and a tray replacing method thereof. The charging tray replacing device comprises: the material rack (2) comprises a plurality of bins (21) for accommodating the material trays (3) and locking mechanisms for locking each material tray (3) in the corresponding bin (21); the feeding devices (1) are positioned at one side of the material rack (2), and each feeding device (1) is configured to receive a material belt (4) led out from a material tray (3) in a corresponding bin (21) on the material rack (2) and execute feeding operation; and the controller (5) is in signal connection with the locking mechanism and is configured to enable the locking mechanism to unlock the bin (21) of the tray (3) to be replaced when the tray (3) needs to be replaced. The embodiment of the disclosure can avoid the tray from being changed as much as possible.

Description

Chip mounter, material tray replacing device and material tray replacing method

Technical Field

The disclosure relates to the technical field of surface mounting, in particular to a chip mounter, a material tray replacing device and a material tray replacing method.

Background

SMT (Surface mount Technology) patches are short for a series of process flows processed on the basis of a PCB (Printed Circuit Board). In the related art, Surface Mount Devices (SMDs) applied by SMT are packaged in a rolled material tape and wound in a tray of a certain specification. In the SMT chip mounting process, in order to continuously supplement materials, the material tray needs to be replaced. When the material tray is replaced, an operator scans the feeder and the material tray to be replaced successively by the code scanning gun to confirm the corresponding relation between the feeder and the material tray, the material receiving and replacing are carried out manually after the system confirms that the material tray is correct, and the material tray is freely placed on the material rack below the feeder according to a certain sequence and is taken and placed as required.

Disclosure of Invention

In one aspect of the present disclosure, there is provided a tray replacing device, including:

the material rack comprises a plurality of bins for accommodating the material trays and locking mechanisms for locking each material tray in the corresponding bin respectively;

the feeders are positioned on one side of the material rack, and each feeder is configured to receive a material belt led out from a material tray in a corresponding bin on the material rack and execute feeding operation; and

and the controller is in signal connection with the locking mechanism and is configured to enable the locking mechanism to unlock the bin of the tray to be replaced when the tray needs to be replaced.

In some embodiments, the locking mechanism includes a plurality of gate locking structures in one-to-one correspondence with the plurality of bins, each gate locking structure including a sliding gate slidably disposed on an opening of a corresponding bin, opening or closing of the bin being achieved by sliding of the sliding gate, and a locking hook configured to place the sliding gate in a position that closes the bin in a locking position.

In some embodiments, the tray accommodating space in the storage bin is cylindrical, a circular arc-shaped slide way is arranged on the periphery of the tray accommodating space, and a part of the sliding gate is slidably arranged in the circular arc-shaped slide way.

In some embodiments, the gate locking structure further comprises: the first spring is positioned in the arc-shaped slide way, two ends of the first spring are respectively connected with the storage bin and the sliding gate, and the first spring is configured to enable the sliding gate to slide to a position where the storage bin is opened when the locking hook is positioned at an unlocking position.

In some embodiments, the gate locking structure further comprises:

and the opening sensor is arranged in the material rack, is in signal connection with the controller, and is configured to detect the position of the sliding gate, so that the controller determines whether the sliding gate reaches the position for opening the storage bin.

In some embodiments, the gate locking structure further comprises:

an eccentric member contacting the latch hook; and

and the brake opening motor is in signal connection with the controller, is provided with a power output end connected with the eccentric part and is configured to drive the connecting piece to enable the locking hook to be separated from the locking position.

In some embodiments, one end of the locking hook is hinged to the bin, the other end of the locking hook is provided with a groove, the eccentric component is movably inserted into the groove, and the opening motor drives the eccentric component to eccentrically rotate so as to enable the locking hook to swing from the locking position to the unlocking position.

In some embodiments, the gate locking structure further comprises:

a pick fixedly connected with the lock hook and extending from an opening on an outer wall of the bin, configured to drive the lock hook to swing from the locked position to the unlocked position when the pick is picked,

when the locking hook is in the locking position, the eccentric part has a gap with a groove wall on one side of the groove, which is adjacent to the sliding gate.

In some embodiments, the gate locking structure further comprises:

and the closing sensor is arranged in the material rack, is in signal connection with the controller, and is configured to detect the position of the lock hook or the position of the plectrum so that the controller can determine whether the lock hook is in the locking position.

In some embodiments, the gate locking structure further comprises:

a second spring coupled to the latch hook and configured to urge the latch hook toward a state of movement toward the latching position.

In some embodiments, the gate locking structure further comprises:

and the brake opening motor sensor is arranged in the material rack, is in signal connection with the controller, and is configured to detect the position of the eccentric part so that the controller can determine whether the lock hook is in an unlocking state.

In some embodiments, the gate locking structure further comprises: the switching-off sensor, the switching-on sensor and the switching-off motor sensor are all arranged in the material rack and are in signal connection with the controller; the opening sensor is configured to detect a position of the sliding gate so that the controller determines whether the sliding gate reaches a position at which the bin is opened, the closing sensor is configured to detect a position of the locking hook or a position of a paddle so that the controller determines whether the locking hook is in the locking position, and the opening motor sensor is configured to detect a position of the eccentric member; the storage bin is provided with a cable interface which is electrically connected with the switching-off motor, the switching-off sensor, the switching-on sensor and the switching-off motor sensor and is configured to be connected with a quick-connection cable.

In some embodiments, the gate locking structure further comprises an operating handle connected to the sliding gate and configured to define a maximum sliding travel of the sliding gate in a direction opening to the cartridge and a direction closing to the cartridge.

In some embodiments, the controller is configured to cause the locking mechanism to lock the bins that do not require tray replacement during both the feeding operations performed by the plurality of feeders and during tray replacement.

In some embodiments, the tray changing apparatus further comprises:

sweep a yard mechanism, with controller signal connection is configured as to sweep a yard operation respectively to the feeder that the feed bin that needs to change the charging tray corresponds and new charging tray to the controller is judging when new charging tray can be used to change, makes locking mechanical system unblock the feed bin that needs to change the charging tray.

In one aspect of the present disclosure, a chip mounter is provided, including: the charging tray replacing device is provided.

In an aspect of the disclosure, a tray replacing method based on the tray replacing device includes:

when the material tray needs to be replaced, respectively carrying out code scanning operation on a feeder and a new material tray corresponding to the material bin of which the material tray needs to be replaced;

and determining whether the new material tray and the feeder have a binding relationship according to information obtained by code scanning operation, and if so, unlocking the bin of the material tray to be replaced by the locking mechanism so as to replace the material tray.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description, serve to explain the principles of the disclosure.

The present disclosure may be more clearly understood from the following detailed description, taken with reference to the accompanying drawings, in which:

fig. 1A is a schematic view of a material rest and a feeder of a chip mounter in a normal operating state in the related art;

fig. 1B is a schematic view of a material rest and a material feeder of a chip mounter in a working state of material replacement in the related art;

fig. 1C is a schematic view of a stack and feeder in normal operation, in accordance with some embodiments of the chip mounter of the present disclosure;

fig. 1D is a schematic view of a stack and feeder in a state when a tray is replaced according to some embodiments of the mounter according to the present disclosure;

fig. 2 is a schematic view of the external structure of a rack in some embodiments of a tray changing apparatus according to the present disclosure;

fig. 3 is a schematic view of the internal structure of a rack in some embodiments of a tray changing apparatus according to the present disclosure;

FIG. 4 is a schematic view of the assembled structure of the bin and part of the locking mechanism in some embodiments of the tray changing apparatus according to the present disclosure;

fig. 5 is a schematic view of a latch hook and related structures in some embodiments of a tray changing apparatus according to the present disclosure;

FIG. 6 is a schematic view of an opening motor and related structures in some embodiments of a tray changing apparatus according to the present disclosure;

FIG. 7 is a schematic structural diagram of a portion corresponding to circle A in FIG. 3;

FIG. 8 is a schematic structural diagram of a portion corresponding to circle B in FIG. 3;

FIG. 9 is a block schematic diagram of signal communication in some embodiments of a tray changing apparatus according to the present disclosure;

fig. 10 is a schematic flow diagram of some embodiments of a tray change method according to the present disclosure.

It should be understood that the dimensions of the various parts shown in the figures are not drawn to scale. Further, the same or similar reference numerals denote the same or similar components.

Detailed Description

Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative and is in no way intended to limit the disclosure, its application, or uses. The present disclosure may be embodied in many different forms and is not limited to the embodiments described herein. These embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that: the relative arrangement of parts and steps, the composition of materials, numerical expressions and numerical values set forth in these embodiments are to be construed as merely illustrative, and not as limitative, unless specifically stated otherwise.

The use of "first," "second," and similar terms in this disclosure is not intended to indicate any order, quantity, or importance, but rather are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element preceding the word covers the element listed after the word, and does not exclude the possibility that other elements are also covered. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

In the present disclosure, when a specific device is described as being located between a first device and a second device, there may or may not be intervening devices between the specific device and the first device or the second device. When a particular device is described as being coupled to other devices, that particular device may be directly coupled to the other devices without intervening devices or may be directly coupled to the other devices with intervening devices.

All terms (including technical or scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs unless specifically defined otherwise. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.

Referring to fig. 1A and 1B, a stack 2 of a chip mounter in the related art is located below a feeder 1. The strip of material 4 is wound on a tray 3, which tray 3 is placed in respective pockets 21 in the stacks 2. The correspondence between the feeder 1 and the tray 3 can be referred to as (r) - (v) in fig. 1A. However, when the trays corresponding to the marks (i) and (ii) are replaced, the tray of the mark (i) should correspond to the feeder of the mark (i) and the tray of the mark (ii) should correspond to the feeder of the mark (ii), but actually, the tray of the mark (i) is loaded into the bin of the feeder (ii) corresponding to the mark (ii), and the tray of the mark (ii) is loaded into the bin of the feeder corresponding to the mark (i), thereby causing a production accident. Because the production line of the chip mounter is usually continuously stopped, a large amount of defective products can be generated, and therefore, the cost loss is large.

After the research and analysis of the inventor on the cause of the occurrence of the mischange phenomenon, the main cause is found to be: firstly, when the same work content is continuously repeated in manual operation, the phenomenon of vague horn with a certain probability exists, so that the people forget or become lost; secondly, the material belt material discs are manufactured according to a certain standard, the sizes and the appearances are basically consistent, and the small patches are difficult to distinguish under the condition that the sizes and the color properties of the small patches are not different; thirdly, the height difference of about half a meter exists between the feeder and the material tray, and the material belt is soft and thin as a whole, so that shaking and swinging are easy to occur during feeding, and the distinguishing of operators is also influenced; fourthly, although the change operation is confirmed by scanning the code in the operation flow, the wrong tray may be changed because the tray is freely placed on the rack or the code is scanned correctly.

In view of the above, referring to fig. 1C to fig. 10, embodiments of the present disclosure provide a chip mounter, a tray replacing apparatus and a tray replacing method thereof, which can avoid tray exchange as much as possible.

Referring to fig. 1C, 1D, and 9, in some embodiments, the placement machine includes a tray changing device. The charging tray replacing device comprises: a rack 2, a plurality of feeders 1 and a controller 5. The stack 2 comprises a plurality of pockets 21 for receiving the trays 3 and a locking mechanism for locking each tray 3 in a respective one of the pockets 21. A plurality of feeders 1 are located at one side of the rack 2, and each feeder 1 is configured to receive the material strip 4 from the material tray 3 in the corresponding bin 21 of the rack 2 and perform feeding operation. The controller 5 is in signal connection with the locking mechanism and is configured to cause the locking mechanism to unlock the magazine 21 of the tray 3 to be replaced when the tray 3 needs to be replaced.

In fig. 1C, the strip 4 from the tray 3 in each silo 21 is introduced into the feeder 1. When the feeder 1 performs a feeding operation, the controller 5 may cause the locking mechanism to lock each of the bins 21 so that the trays in each of the bins 21 cannot be taken out of the bin 21. When the material tray with the second label needs to be replaced, the controller 5 can enable the locking mechanism to unlock only the bin corresponding to the material tray with the second label, and other bins continue to be kept in a locking state, so that a worker replacing the material tray can only replace the material tray for the bin. After the replacement, the worker may lock the bin of the replaced tray by the locking mechanism, or the controller 5 may cause the locking mechanism to continue to lock the bin of the replaced tray.

This embodiment locks each feed bin through locking mechanical system on the work or material rest, makes each charging tray that is located each feed bin can not take out, and when needs were changed the charging tray, controller control locking mechanical system carried out the unblock operation to the feed bin that needs changed the charging tray for the personnel of changing the charging tray can only change the operation of charging tray to this feed bin, and can not open other feed bins because of the mistake and change the charging tray by mistake, thereby avoid because of the production accident that the wrong charging tray caused.

In fig. 2, the stacks 2 can be hung on two mounting rods 7 (e.g., steel bars, etc.), and the number of bins included in the stacks 2 can be set as desired. The storage bins can be independently hung on the mounting rods 7, and can also be hung on the mounting rods 7 after being combined. Referring to fig. 1C and 1D, in some embodiments, the locking mechanism includes a plurality of gate locking structures 22 in one-to-one correspondence with the plurality of bins 21. Each gate locking structure 22 can independently effect opening and closing of the corresponding silo 21. In other embodiments, the locking mechanism may also be a unitary mechanism and effect opening and closing of the individual bins.

In fig. 2-4, each silo 21 includes an outer wall 212. The outer wall 212 may be used to enclose a cavity that houses the tray, as well as a cavity that houses other components, such as electrical control components. The outer wall 212 may also include a ledge 214 extending toward the open side to shield the tray. The outer walls of adjacent bins can be tightly attached to each other, or the same outer wall is shared between the adjacent bins.

Each gate locking structure 22 includes a sliding gate 221 and a latch hook 222. The sliding gate 221 is slidably disposed on the opening of the corresponding bin 21, and the bin 21 is opened or closed by sliding the sliding gate 221. The locking hook 222 is configured to place the sliding gate 221 in a position that closes the silo 21 in a locked position.

The slip of slip sluice gate can change the uncovered aperture of feed bin, when uncovered aperture satisfied the size of charging tray business turn over, can realize the change of charging tray. And when the opening degree of the opening is smaller than the size of the charging tray in and out, the charging tray is locked in the storage bin. The latch hook can be used for restricting the position of the sliding gate, and when the latch hook locks the sliding gate, the sliding gate cannot slide, so that the opening degree of the storage bin is kept unchanged.

Referring to fig. 2 to 4, in some embodiments, the tray accommodating space in the bin 21 is cylindrical, a circular arc-shaped slide 211 is provided on the outer circumference of the tray accommodating space, and a part of the slide gate 221 is slidably disposed in the circular arc-shaped slide 211. The arc-shaped slide way occupies less space and is matched with the outer contour shape of the cylindrical material tray.

The latch hook 222 can be inserted into the opening 2111 of the circular arc-shaped sliding groove 211 in fig. 4 and blocks the sliding gate 221 so that it does not rotate further inward. When the latch hook 222 is out of the opening 2111 and does not block the movable gate 221, the sliding gate 222 can continue to rotate inward to enlarge the open opening of the silo.

In fig. 3 and 4, the sliding gate 221 may include a circular arc-shaped slide rail 2212 capable of sliding in the circular arc-shaped slide rail 211 and a baffle 2211 connected to the circular arc-shaped slide rail 2212. The radial width of the baffle 2211 is larger than that of the circular arc slide rail 2212 so as to better limit the movement of the tray 3 in the axial direction. The baffle 2211 can be the same as the radial width of the rim 214.

Referring to fig. 3 and 4, in some embodiments, the gate lock structure 22 further comprises: and the first spring 223 is positioned in the circular arc slide way 211. The first spring 223 is connected to the bin 21 and the sliding gate 221 at two ends, and configured to slide the sliding gate 221 to a position where the bin 21 is opened when the latch hook 222 is in the unlocking position. Like this, after the latch hook is unblock, the uncovered automatic expansion of feed bin 21 can indicate the operator to carry out more swift change.

Referring to fig. 3, 7 and 9, in some embodiments, the gate locking structure 22 further includes an open gate sensor 2281 disposed within the stack 2. An opening sensor 2281 may be in signal connection with the controller 5 and configured to detect the position of the sliding gate 221 so that the controller 5 determines whether the sliding gate 221 reaches a position to open the bin 21. In this way, the controller 5 may determine whether the opening of the bin 21 is normal. The opening sensor 2281 may be located at the end of the circular arc shaped slide 211, and when the sliding gate 222 slides to this position, it can be detected by the opening sensor 2281.

Referring to fig. 3, 5, 6, 8, and 9, in some embodiments, the gate locking structure 22 further comprises: an eccentric member 229 and a switching-off motor 224. The eccentric part 229 is in contact with the latch hook 222. The opening motor 224 is in signal connection with the controller 5 and has a power output connected to the eccentric part 229 and configured to drive the connecting member to disengage the locking hook 222 from the locking position. The controller 5 may move the latch hook 222 away from the locking position by controlling the opening motor 224.

In fig. 6 and 8, one end of the latch hook 222 is hinged to the bin 21, and the other end has a groove 2221. The eccentric member 229 is movably inserted into the groove 2221, and the opening motor 224 eccentrically rotates by driving the eccentric member 229 to swing the latch hook 222 from the locking position to the unlocking position. The eccentric member 229 may include a protruding portion 2291 capable of being inserted into the groove 2221, and the protruding portion 2291 is spaced apart from the rotation shaft of the opening motor 224 to achieve eccentric rotation.

When the opening motor 224 drives the eccentric member 229 to rotate eccentrically, the protruding portion 2221 presses the inner wall of the groove 2221 while rotating with respect to the axis, so that the latch hook 222 swings to the side away from the slide gate opening 221. After the latch hook 222 is disengaged from the locking position, the sliding gate 221 is no longer limited by the latch hook 222, but is driven by the first spring 223 to be unfolded. The eccentric part 229 continues to rotate with the driving action of the opening motor 224 until it returns to the initial position. At this time, the latch hook 222 is not pressed by the eccentric member 229 any more, but cannot return to the locked position under the restriction of the movable gate 221.

Considering that the opening motor may fail to achieve automatic unlocking, referring to fig. 3-5 and 8, in some embodiments, the gate locking structure 22 further includes a paddle 225 fixedly connected to the latch hook 222. The paddle 225 protrudes through an opening 2121 in the outer wall 212 of the cartridge 21. When the paddle 225 is toggled (e.g., by an operator's hand), the latch hook 222 is caused to swing from the latched position to the unlatched position. In order to allow the locking hook 222 to be pulled, the eccentric part 229 in the initial position has a clearance with a groove wall of the groove 2221 on a side adjacent to the sliding gate 221. In fig. 5, paddle 225 is positioned against the right side of opening 2121 and latch hook 222 is in the latched position. In fig. 6, paddle 225 rests against the left side of opening 2121 and latch hook 222 is in the unlatched position.

Referring to fig. 6, 8 and 9, in some embodiments, the gate locking structure 22 further includes a closing sensor 2282 disposed within the stack 2. A closing sensor 2282 is in signal connection with the controller 5 and is configured to detect the position of the latch hook 222 or the position of the paddle 225 so that the controller 5 determines whether the latch hook 222 is in the locking position.

In order to keep the locking hook 222 in the locking position when it is desired to lock the sliding gate 221, referring to fig. 3, in some embodiments, the gate locking structure 22 further comprises a second spring 226 connected to said locking hook 222. The second spring 226 is configured to urge the latch hook 222 to a state of moving toward the locking position, thereby keeping the latch hook 222 in the locking position. The second spring 226 may be directly connected to the latch hook 222 or may be connected to the paddle 225 so as to indirectly act on the latch hook 222. The second spring 226 may be mounted in an elongated slot provided inside the outer wall 212 in fig. 4 and aligned with the opening 2111 of the circular arc-shaped slideway 211, so that the elastic force of the second spring 226 on the latch hook 222 is directed to the opening 2111.

Referring to fig. 6, 8 and 9, in some embodiments, the gate locking structure 22 further includes a gate opening motor sensor 2283 disposed within the stack 2. And is in signal connection with the controller 5 and configured to detect the position of the eccentric member 229. The position of the eccentric member 229 is detected by the switching-off motor sensor 2283, so that the switching-off motor 224 can be conveniently controlled to return the eccentric member 229 to an accurate initial position after the unlocking operation is performed.

In addition, in fig. 2 and 3, the storage bin 21 may further have a cable interface 213 electrically connected to the opening motor 224, the opening sensor 2281, the closing sensor 2282, and the opening motor sensor 2283, and configured to connect a quick-connection cable. The cable interface 213 may be located within an opening 2123 of the outer wall 212 in fig. 4. This facilitates quick connection of the cable by the operator. The gate locking structure 22 of each silo 21 may be a single cable, and these cables may be connected to the controller 5, or may be strung together through a serial interface and then connected to the controller 5 through a single cable.

Referring to fig. 4, in some embodiments, the gate locking structure 22 further comprises an operating handle 227 connected to the sliding gate 221. The operating handle 227 may be configured to define a maximum sliding stroke of the sliding gate 221 in a direction of opening to the cartridge 21 and a direction of closing to the cartridge 21. The operator can operate the operating handle 227 by hand to open or close the bin, and the cooperation of the operating handle 227 itself with the circular arc-shaped slide 211 can limit the maximum sliding stroke in both the opening and closing directions.

After the tray is replaced, the operator can pull the handle 227 to pull the sliding gate 221 to the position for blocking the tray, and at this time, the latch hook 222 enters the opening 2111 under the pushing of the second spring 226 and blocks the sliding gate 221, thereby maintaining the locked state. At this time, the pusher 225 also pushes the closing sensor 2282 under the pushing of the second spring 226, so that the controller 5 knows that the sliding gate is normally closed and can proceed to the next operation.

Referring to fig. 9, in some embodiments, the tray changing device further comprises a code scanning mechanism 6 in signal connection with the controller 5. Sweep ink recorder and construct 6 and be configured as to sweep ink recorder operation respectively to feeder 1 and the new charging tray that the feed bin 21 that need change charging tray 3 corresponds to controller 5 makes locking mechanical system unblock when judging new charging tray can be used to change the feed bin 21 that needs change charging tray 3. Because binding relationship exists among the feeder 1, the new material tray and the bin 21, the controller can determine whether the new material tray corresponds to the feeder or not through code scanning operation, if so, the bin can be indicated to be unlocked according to the corresponding relationship between the feeder and the bin, and therefore operation of an operator is simplified. Different from the mode of binding the cable, the feeder and the material tray, the present embodiment avoids the risk of material replacement caused by cable insertion errors by the mode of binding the storage bin, the feeder and the material tray.

Based on the various embodiments of the tray changing device, referring to fig. 10, in some embodiments, the disclosed embodiments also provide a tray changing method based on the tray changing device, including steps S1-S3. In step S1, when the tray 3 needs to be replaced, the feeder 1 corresponding to the bin 21 of the tray 3 needs to be replaced and a new tray are scanned. In step S2, it is determined whether the new tray and the feeder 1 have a binding relationship according to the information obtained by the code scanning operation, if so, step S3 is executed, otherwise, the operation is ended. In step S3, the locking mechanism is unlocked from the magazine 21 of the tray 3 to be replaced, so that the tray 3 replacement operation is performed.

Thus, various embodiments of the present disclosure have been described in detail. Some details that are well known in the art have not been described in order to avoid obscuring the concepts of the present disclosure. It will be fully apparent to those skilled in the art from the foregoing description how to practice the presently disclosed embodiments.

Although some specific embodiments of the present disclosure have been described in detail by way of example, it should be understood by those skilled in the art that the foregoing examples are for purposes of illustration only and are not intended to limit the scope of the present disclosure. It will be understood by those skilled in the art that various changes may be made in the above embodiments or equivalents may be substituted for elements thereof without departing from the scope and spirit of the present disclosure. The scope of the present disclosure is defined by the appended claims.

Claims

1. A tray changing apparatus, comprising:

the material rack (2) comprises a plurality of bins (21) for accommodating the material trays (3) and locking mechanisms for locking each material tray (3) in the corresponding bin (21);

the feeding devices (1) are positioned at one side of the material rack (2), and each feeding device (1) is configured to receive a material belt (4) led out from a material tray (3) in a corresponding bin (21) on the material rack (2) and execute feeding operation; and

a controller (5) in signal connection with the locking mechanism and configured to cause the locking mechanism to unlock the magazine (21) of the tray (3) to be replaced when the tray (3) needs to be replaced.

2. The tray changing apparatus according to claim 1, wherein the locking mechanism includes a plurality of gate locking structures (22) in one-to-one correspondence with the plurality of bins (21), each gate locking structure (22) includes a sliding gate (221) and a locking hook (222), the sliding gate (221) is slidably disposed on an opening of the corresponding bin (21), opening or closing of the bin (21) is achieved by sliding of the sliding gate (221), and the locking hook (222) is configured to place the sliding gate (221) in a position where the bin (21) is closed in a locking position.

3. The tray changing apparatus according to claim 2, wherein the tray accommodating space in the bin (21) is cylindrical, a circular arc shaped slide (211) is provided on an outer circumference of the tray accommodating space, and a part of the slide gate (221) is slidably provided in the circular arc shaped slide (211).

4. The tray changing apparatus according to claim 3, wherein the gate locking structure (22) further comprises: the first spring (223) is positioned in the arc-shaped slide way (211), two ends of the first spring are respectively connected with the bin (21) and the sliding gate (221), and the first spring is configured to enable the sliding gate (221) to slide to a position where the bin (21) is opened when the locking hook (222) is located at an unlocking position.

5. The tray changing apparatus according to claim 4, wherein the gate locking structure (22) further comprises:

an opening sensor (2281) is arranged in the material rack (2), is in signal connection with the controller (5) and is configured to detect the position of the sliding gate (221) so that the controller (5) can determine whether the sliding gate (221) reaches the position for opening the bin (21).

6. The tray changing apparatus according to claim 2, wherein the gate locking structure (22) further comprises:

an eccentric member (229) in contact with the latch hook (222); and

and the opening motor (224) is in signal connection with the controller (5) and is provided with a power output end connected with the eccentric part (229) and is configured to drive the connecting piece to enable the locking hook (222) to be separated from the locking position.

7. The tray changing apparatus according to claim 6, wherein the locking hook (222) has one end hinged to the bin (21) and the other end having a groove (2221), the eccentric member (229) is movably inserted into the groove (2221), and the opening motor (224) eccentrically rotates by driving the eccentric member (229) to swing the locking hook (222) from the locking position to the unlocking position.

8. The tray changing apparatus according to claim 7, wherein the gate locking structure (22) further comprises:

a pick (225) fixedly connected to the latch hook (222) and extending from an opening (2121) in an outer wall (212) of the magazine (21), configured to cause the latch hook (222) to swing from the latched position to the unlatched position when the pick (225) is picked,

wherein the eccentric part (229) has a clearance with a groove wall of the groove (2221) on a side adjacent to the sliding gate (221) when the latch hook (222) is in the locking position.

9. The tray changing apparatus according to claim 8, wherein the gate locking structure (22) further comprises:

a closing sensor (2282) disposed in the rack (2) and in signal connection with the controller (5) and configured to detect a position of the latch hook (222) or a position of the paddle (225) so that the controller (5) determines whether the latch hook (222) is in the latched position.

10. The tray changing apparatus according to claim 2, wherein the gate locking structure (22) further comprises:

a second spring (226) coupled to the catch (222) and configured to urge the catch (222) toward the latched position.

11. The tray changing apparatus according to claim 7, wherein the gate locking structure (22) further comprises:

an opening motor sensor (2283) disposed within the stack (2) and in signal communication with the controller (5) configured to detect a position of the eccentric member (229).

12. The tray changing apparatus according to claim 6, wherein the gate locking structure (22) further comprises: an opening sensor (2281), a closing sensor (2282) and an opening motor sensor (2283) which are all arranged in the material rack (2) and are all in signal connection with the controller (5); the opening sensor (2281) is configured to detect a position of the sliding gate (221) so that the controller (5) determines whether the sliding gate (221) reaches a position where the magazine (21) is opened, the closing sensor (2282) is configured to detect a position of the latch hook (222) or a position of a paddle (225) so that the controller (5) determines whether the latch hook (222) is in the latched position, and the opening motor sensor (2283) is configured to detect a position of the eccentric member (229); the silo (21) has a cable interface (213) electrically connected with the opening motor (224), the opening sensor (2281), the closing sensor (2282) and the opening motor sensor (2283) and is configured to connect a quick-connect cable.

13. The tray changing apparatus according to claim 2, wherein the gate locking structure (22) further comprises an operating handle (227) connected to the slide gate (221) and configured to define a maximum sliding stroke of the slide gate (221) in a direction to open to the magazine (21) and a direction to close the magazine (21).

14. The tray changing apparatus according to claim 1, wherein the controller (5) is configured to cause the locking mechanism to lock the bins (21) that do not require replacement of a tray (3) both during feeding operations performed by the plurality of feeders (1) and during replacement of a tray (3).

15. The tray changing apparatus according to any one of claims 1 to 14, further comprising:

sweep ink recorder and construct (6), with controller (5) signal connection is configured as and sweeps a yard operation respectively to feeder (1) and new charging tray that feed bin (21) that need to change charging tray (3) correspond to so that controller (5) are judging when new charging tray can be used to change, make locking mechanical system unblock feed bin (21) that need to change charging tray (3).

16. A chip mounter, comprising:

the tray changing apparatus according to any of claims 1 to 15.

17. A tray changing method based on the tray changing apparatus according to claim 15, comprising:

when the material tray (3) needs to be replaced, respectively carrying out code scanning operation on the feeder (1) corresponding to the bin (21) of the material tray (3) needing to be replaced and a new material tray;

and determining whether the new tray and the feeder (1) have a binding relationship according to information obtained by code scanning operation, and if so, unlocking the bin (21) of the tray (3) to be replaced by the locking mechanism so as to replace the tray (3).