CN113844704A

CN113844704A - A mistake discernment protection mechanism for PCB transfer vanning equipment

Info

Publication number: CN113844704A
Application number: CN202110982251.4A
Authority: CN
Inventors: 蒋力; 周锡峰; 周东; 褚伟锋; 周向荣; 丁建军; 汤鑫杰; 陈正贝
Original assignee: Hangzhou Wahaha Precision Machinery Co ltd
Current assignee: Hangzhou Wahaha Precision Machinery Co ltd
Priority date: 2021-08-25
Filing date: 2021-08-25
Publication date: 2021-12-28
Anticipated expiration: 2041-08-25
Also published as: CN113844704B

Abstract

The invention discloses a mistaken identification protection mechanism for PCB transfer boxing equipment, which comprises a roller conveyor and a blocking mechanism, wherein the roller conveyor comprises a waiting station, the blocking mechanism comprises a contact rod, a lifting frame, a telescopic spring and a blocking rod, the lifting frame is arranged below the waiting station and is in sliding connection with the roller conveyor along the up-down direction, the telescopic spring is used for enabling the lifting frame to keep in a lifting state, the contact rod is fixed with the lifting frame, the upper end of the contact rod extends out of the roller conveyor, one end of the blocking rod is hinged with the lifting frame, a hinged shaft of the blocking rod is horizontally arranged, and the blocking rod is arranged on the discharging side of the waiting station. The invention provides a wrong identification protection mechanism for PCB transfer boxing equipment, which can protect a product box on a roller conveyor, prevent a clamping jaw from stretching into the product box when the distance between the clamping jaws on a mechanical arm is selected wrongly, and avoid the phenomenon that the product box is punctured by the clamping jaw or falls off in the conveying process.

Description

A mistake discernment protection mechanism for PCB transfer vanning equipment

Technical Field

The invention relates to the technical field of PCB transfer boxing equipment, in particular to a false recognition protection mechanism for the PCB transfer boxing equipment.

Background

Pcb (printed Circuit board), which is called printed Circuit board in chinese, is an important electronic component, is a support for electronic components, and is a carrier for electrical interconnection of electronic components. In the automatic production line, the PCB is automatically transferred and boxed through transfer and boxing equipment. The applicant designs a printed circuit board transfer boxing device, a product box is conveyed to a waiting station by a roller conveyor, then a clamping jaw on a mechanical arm extends into the upper part and the lower part of the product box to clamp the product box, and the product box is placed at a specified position to be transferred and boxed. Because the product box has two kinds of different thickness, the clamping jaw also makes corresponding improvement, has the open position and the clamping position of two kinds of different intervals, the product box of two kinds of thicknesses of adaptation, the open position of two kinds of different intervals is controlled by the signal of controller according to bar code reader input, but bar code reader or control probably break down in the use, the mistake of discernment appears, lead to the open interval of clamping jaw and the thickness of product box to mismatch. If the clamping jaws are selected to have a larger opening distance, after the clamping jaws are closed, the distance is still larger than the thickness of the product box, so that the product box cannot be clamped and can fall off in the conveying process. If the clamping jaw selects a smaller opening distance, which is smaller than the thickness of the product box, the product box can be punctured when the clamping jaw extends, so that the product is lost. Therefore, a wrong identification protection mechanism for the PCB transfer boxing equipment needs to be designed, so that the clamping jaw can be prevented from stretching into the equipment when the distance between the clamping jaws on the mechanical arm is selected wrongly, and the product box is prevented from being punctured by the clamping jaws or the product box is prevented from falling off in the conveying process.

Chinese patent application publication No. CN112455796A, published as 2021, 03 and 09, entitled "an electronic detonator boxing apparatus", discloses an electronic detonator boxing apparatus, comprising: a frame; the material frame is arranged on the rack and is provided with a first cavity with an opening; the transfer box is movably arranged on the rack, a second cavity with an opening is arranged on the transfer box, and a plurality of partition plates for dividing the internal space of the second cavity into a plurality of storage unit cavities are arranged in the second cavity; the pushing mechanism is arranged between the material frame and the transfer box and can push the bagged electronic detonators in the first cavity into the corresponding storage unit cavities; the empty box grabbing mechanism is positioned on one side of the transfer box and can grab the empty box and sleeve the empty box outside the transfer box; the clamping and overturning mechanism is connected with the transfer box, can clamp the empty box and drive the transfer box to overturn so that the opening of the empty box upwards puts the bagged electronic detonator in the transfer box into the empty box, and the electronic detonator boxing equipment with the structure can accurately control the number of bags of each layer of electronic detonators in the packaging box, so that the boxing efficiency and the stability of the electronic detonators are improved. However, the boxing apparatus is not suitable for PCB transshipment and does not solve the above problems.

Disclosure of Invention

The invention provides a misidentification protection mechanism for PCB transfer boxing equipment, which aims to solve the problem that when the opening distance of a mechanical arm clamping jaw in the printed circuit board transfer boxing equipment is not matched with the thickness of a product box, the clamping jaw can puncture the product box or the product box falls off in the conveying process.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides a mistake discernment protection mechanism for PCB transfer vanning equipment, including cylinder conveyer and barrier mechanism, cylinder conveyer is including waiting for the station, barrier mechanism includes the contact arm, the crane, expanding spring and stop the pole, the crane setting is waiting for station below and with cylinder conveyer along upper and lower direction sliding connection, expanding spring is used for making the crane keep the state of rising, the contact arm is fixed with the crane, cylinder conveyer is stretched out to the upper end of contact arm, the one end that stops the pole is articulated with the crane, the articulated shaft level that stops the pole sets up, stop the discharge side that the pole setting is waiting for the station.

In the above technical scheme, the blocking mechanism is used for protecting the product box on the roller conveyor. The blocking rod can be lifted according to different product boxes, and the width of the product box with larger thickness is also larger. When a product box with larger thickness enters a waiting station, the product box presses down the contact rod, the lifting frame overcomes the elasticity of the telescopic spring to descend, the blocking rod descends along with the contact rod, at the moment, if the clamping jaws of the mechanical arm are in a large-space state, the blocking rod is positioned in the middle position of the upper clamping jaw and the lower clamping jaw, the upper clamping jaw and the lower clamping jaw can both penetrate through the blocking rod and extend into the upper part and the lower part of the product box, after the product is clamped, the product is lifted upwards, at the moment, the blocking rod is contacted with the clamping jaw below and rotates along with the clamping jaw, and the clamping jaw and the product can smoothly pass through the blocking rod; if the clamping jaw of arm is in the booth apart from the state, blocks on the pole is in the position with last clamping jaw co-altitude, and upward being blocked by the pole that blocks, can't passing blocks the pole, plays the effect of protection product box, and the arm resistance increases, feeds back to the controller, reports to the mistake.

When a product box with smaller thickness enters a waiting station, the product box cannot touch a contact rod, the lifting frame and the blocking rod are all kept in a lifting state, at the moment, if the clamping jaws of the mechanical arm are in a small-spacing state, the blocking rod is positioned above the upper clamping jaw, the upper clamping jaw and the lower clamping jaw can both penetrate through the blocking rod and extend into the upper part and the lower part of the product box, after the product is clamped, the product is lifted upwards, at the moment, the blocking rod is in contact with the clamping jaw above and rotates along with the clamping jaw, and the clamping jaw and the product can smoothly pass through the blocking rod; if the clamping jaw of arm is in big interval state, blocks on the pole is in the position with last clamping jaw co-altitude, and upward being blockked the pole and blockking, can't passing blocks the pole, plays the effect of protection product box, and the arm resistance increases, feeds back to the controller, reports to the mistake.

Preferably, the automatic feeding device further comprises a first product box and a second product box, a positioning plate is arranged on the discharging side of the waiting station, the distance from the contact rod to the positioning surface of the positioning plate is smaller than the width of the first product box, and the distance from the contact rod to the positioning surface of the positioning plate is larger than the width of the second product box. The structure can ensure that the contact rod is pressed down when the first product box enters, and the contact rod keeps in a rising state when the first product box enters.

Preferably, the upper end of the contact rod is provided with a guide slope. The structure ensures that the contact rod can descend smoothly under the action of the product box.

Preferably, the upper end of the guide slope is provided with a roller. The structure can reduce the friction between the contact rod and the product box.

Preferably, a pushing mechanism used for enabling the product box to abut against the positioning plate is arranged at a position, far away from the discharging side, of the waiting station, the pushing mechanism comprises a pushing plate and a telescopic mechanism, the pushing plate is fixed with a telescopic rod of the telescopic mechanism, and the telescopic mechanism is fixed with the roller conveyor. The structure can support the product box on the locating plate, guarantees that the position of product box is accurate, and the transportation of the later stage arm of being convenient for also can avoid small-size product box because the position is incorrect mistake and touches the contact lever. The telescopic mechanism may be a pneumatic cylinder, or other linear drive mechanism.

Preferably, an avoiding groove is formed in the discharging side of the waiting station. The avoiding groove can ensure that the clamping jaw of the mechanical arm can smoothly extend into the lower part of a product and be lifted.

Preferably, the number of the blocking rods is two, and the two blocking rods are symmetrically arranged on the discharging side of the waiting station. The structure can secure the blocking effect.

Preferably, the lifting frame is provided with a limiting block for limiting the blocking rod. The structure can ensure that the blocking rod is kept in a horizontal state.

Preferably, the blocking mechanism further comprises a torsion spring, and two torsion arms of the torsion spring are respectively connected with the lifting frame and the blocking rod. The structure can ensure that the blocking rod can automatically reset.

Preferably, the contact lever and the lifting frame are connected in a sliding mode along the horizontal direction, and the contact lever and the lifting frame are fixed through the locking structure. The locking structure can be a puller bolt, a spring telescopic block and other common structures, when the locking structure is locked, the contact rod cannot slide relative to the lifting frame, and when the locking structure is loosened, the contact rod can slide relative to the lifting frame. The structure enables the position of the contact rod to be adjusted, so that the contact rod can be adapted to product boxes with different widths.

Preferably, the crane comprises a length-adjustable adjusting rod, the blocking rod is fixed to the upper end of the adjusting rod, and the adjusting rod is vertically arranged. The adjusting rod can be various common telescopic rods (if two long rods are connected with each other through threads and sleeved with each other, and are tightly pushed through screws), the adjusting rod can adjust the length, and the length can be kept after the adjusting rod is adjusted to the set length. The structure enables the height position of the blocking rod to be adjusted, so that the blocking rod is suitable for product boxes with different thicknesses.

The invention has the beneficial effects that: (1) the blocking mechanism can protect the product box on the roller conveyor, and when the space between the clamping jaws on the mechanical arm is wrong, the clamping jaws are prevented from extending into the mechanical arm, so that the product box is prevented from being punctured by the clamping jaws or from falling off in the conveying process; (2) can support the product box on the locating plate, guarantee that the position of product box is accurate, the transportation of the later stage arm of being convenient for also can avoid small-size product box because the position is incorrect mistake and touches the contact lever.

Drawings

FIG. 1 is a top view of the present invention;

fig. 2 is a front view of the present invention.

In the figure: roller conveyor 1, wait for station 1.1, locating plate 1.2, dodge groove 1.3, stop gear 2, contact lever 2.1, crane 2.2, expanding spring 2.3, block pole 2.4, stopper 2.5, adjust pole 2.6, first product box 3, second product box 4, push mechanism 5, push plate 5.1, telescopic machanism 5.2.

Detailed Description

The invention is further described with reference to the following figures and specific embodiments.

Example 1:

as shown in fig. 1 and 2, a mistake discernment protection machanism for PCB transfer vanning equipment, including roller conveyor 1, barrier mechanism 2, first product box 3 and second product box 4, roller conveyor 1 is including waiting for station 1.1, the delivery side of waiting for station 1.1 is equipped with locating plate 1.2, barrier mechanism 2 includes contact bar 2.1, crane 2.2, expanding spring 2.3, stop pole 2.4 and torsional spring, crane 2.2 sets up and waits for station 1.1 below and along upper and lower direction sliding connection with roller conveyor 1, the distance of contact bar 2.1 to the locating surface of locating plate 1.2 is less than the width of first product box 3, the distance of contact bar 2.1 to the locating surface of locating plate 1.2 is greater than the width of second product box 4. The upper end of the contact rod 2.1 is provided with a guide inclined plane. The upper end of the guide inclined plane is provided with a roller.

Extension spring 2.3 is used for making crane 2.2 keep the state of rising, and contact arm 2.1 is fixed with crane 2.2, and roller conveyor 1 is stretched out to contact arm 2.1's upper end, and the one end that blocks pole 2.4 is articulated with crane 2.2, blocks the articulated shaft level setting of pole 2.4, and two torsion arms of torsional spring are connected with crane 2.2 and block pole 2.4 respectively. Stop the pole 2.4 setting and wait for the discharge side of station 1.1, be equipped with on the crane 2.2 and carry out spacing stopper 2.5 to stopping pole 2.4. When the contact rod 2.1 descends, the blocking rod 2.4 blocks the entering position where the mechanical arm clamping jaws are opened at a small distance, and when the contact rod 2.1 ascends, the blocking rod 2.4 blocks the entering position where the mechanical arm clamping jaws are opened at a large distance. The number of the blocking rods 2.4 is two, and the two blocking rods 2.4 are symmetrically arranged on the discharging side of the waiting station 1.1.

The position of waiting for station 1.1 to keep away from the ejection of compact side is equipped with and is used for leaning on the pushing mechanism 5 on locating plate 1.2 with the product box, and pushing mechanism 5 includes pushing plate 5.1 and telescopic machanism 5.2, and pushing plate 5.1 is fixed with telescopic link of telescopic machanism 5.2, and telescopic machanism 5.2 is fixed with roller conveyor 1. The discharge side of the waiting station 1.1 is provided with an avoiding groove 1.3.

In the above technical solution, the blocking mechanism 2 is used for protecting the product box on the roller conveyor 1. The blocking rod 2.4 can be lifted according to different product boxes, and the width of the product box with larger thickness is also larger. When a product box with larger thickness enters a waiting station 1.1, the product box presses a contact rod 2.1 downwards, a lifting frame 2.2 overcomes the elasticity of a telescopic spring 2.3 to descend, a blocking rod 2.4 descends along with the descending, at the moment, if clamping jaws of the mechanical arm are in a large-distance state, the blocking rod 2.4 is positioned in the middle position of an upper clamping jaw and a lower clamping jaw, the upper clamping jaw and the lower clamping jaw can both penetrate through the blocking rod 2.4 and extend into the upper part and the lower part of the product box, after the product is clamped, the product is lifted upwards, at the moment, the blocking rod 2.4 is contacted with the lower clamping jaw and rotates along with the clamping jaw, and the clamping jaw and the product can smoothly pass through the blocking rod 2.4; if the clamping jaw of arm is in the booth apart from the state, block on the pole 2.4 is in the position with last clamping jaw co-altitude, go up by blocking pole 2.4 and block, can't pass and block pole 2.4, play the effect of protection product box, the arm resistance increases, feeds back to the controller, reports to the mistake. When a product box with smaller thickness enters a waiting station 1.1, the product box cannot touch a contact rod 2.1, the contact rod 2.1, a lifting frame 2.2 and a blocking rod 2.4 are all kept in a lifting state, at the moment, if a clamping jaw of the mechanical arm is in a small-spacing state, and the blocking rod 2.4 is positioned above an upper clamping jaw, the upper clamping jaw and the lower clamping jaw can both penetrate through the blocking rod 2.4 and extend into the upper part and the lower part of the product box, after the product is clamped, the product is lifted upwards, at the moment, the blocking rod 2.4 is in contact with the clamping jaw above and rotates along with the clamping jaw, and the clamping jaw and the product can smoothly pass through the blocking rod 2.4; if the clamping jaw of arm is in big interval state, block that pole 2.4 is in on the position with last clamping jaw co-altitude, go up by blocking pole 2.4 and block, can't pass and block pole 2.4, play the effect of protection product box, the arm resistance increases, feeds back to the controller, reports the mistake.

Example 2:

on the basis of embodiment 1, the contact rod 2.1 and the lifting frame 2.2 are connected in a sliding mode along the horizontal direction, and the contact rod 2.1 and the lifting frame 2.2 are fixed through a locking structure. The crane 2.2 comprises an adjusting rod 2.6 with adjustable length, the blocking rod 2.4 is fixed with the upper end of the adjusting rod 2.6, and the adjusting rod 2.6 is vertically arranged. The locking structure can be a puller bolt, a spring telescopic block and other common structures, when the locking structure is locked, the contact rod 2.1 can not slide relative to the lifting frame 2.2, and when the locking structure is loosened, the contact rod 2.1 can slide relative to the lifting frame 2.2. The above arrangement allows the position of the contact bar 2.1 to be adjusted to accommodate product boxes of different widths. The adjusting rod 2.6 can be various common telescopic rods (for example, two long rods are connected with each other through threads and are sleeved and tightly pushed through screws), the adjusting rod 2.6 can adjust the length, and the length can be kept after the adjusting rod is adjusted to the set length. The above structure enables the height position of the blocking rod 2.4 to be adjusted so as to adapt to product boxes of different thicknesses.

The invention has the beneficial effects that: (1) the blocking mechanism 2 can protect the product box on the roller conveyor 1, and when the distance between the clamping jaws on the mechanical arm is wrong, the clamping jaws are prevented from extending into the mechanical arm, so that the product box is prevented from being punctured by the clamping jaws or from falling off in the conveying process; (2) can support the product box by on locating plate 1.2, guarantee that the position of product box is accurate, the transportation of the later stage arm of being convenient for also can avoid small-size product box because the position is incorrect mistake and touches contact lever 2.1.

Claims

1. The utility model provides a mistake discernment protection mechanism for PCB transfer vanning equipment, which is characterized by, including cylinder conveyor and barrier mechanism, cylinder conveyor is including waiting for the station, barrier mechanism includes the contact arm, the crane, expanding spring and stop the pole, the crane setting is waiting for station below and with cylinder conveyor along upper and lower direction sliding connection, expanding spring is used for making the crane keep the state of rising, the contact arm is fixed with the crane, cylinder conveyor is stretched out to the upper end of contact arm, the one end that stops the pole is articulated with the crane, the articulated shaft level that stops the pole sets up, stop the discharge side that the pole setting is waiting for the station.

2. The misidentification protection mechanism of PCB transshipment equipment as claimed in claim 1, further comprising a first product box and a second product box, wherein the discharge side of the waiting station is provided with a positioning plate, the distance from the contact rod to the positioning surface of the positioning plate is less than the width of the first product box, and the distance from the contact rod to the positioning surface of the positioning plate is greater than the width of the second product box.

3. The mis-identification protection mechanism as claimed in claim 1, wherein the contact rod is provided at an upper end thereof with a guide slope.

4. The misidentification protection mechanism for PCB transshipment equipment as claimed in claim 1, 2 or 3, wherein the waiting station is provided with a pushing mechanism for pushing the product box against the positioning plate at a position far from the discharging side, the pushing mechanism comprises a pushing plate and a telescoping mechanism, the pushing plate is fixed with a telescoping rod of the telescoping mechanism, and the telescoping mechanism is fixed with the roller conveyor.

5. The misidentification protection mechanism of PCB transshipment equipment as claimed in claim 1, 2 or 3, wherein the discharge side of the waiting station is provided with an avoidance slot.

6. The misidentification protection mechanism for PCB transshipment equipment as claimed in claim 1, 2 or 3, wherein the number of the blocking rods is two, and the two blocking rods are symmetrically disposed at the discharging side of the waiting station.

7. The misidentification protection mechanism for the PCB transshipment equipment as claimed in claim 1, 2 or 3, wherein the lifting frame is provided with a limiting block for limiting the blocking rod.

8. The misidentification protection mechanism of PCB transshipment equipment as claimed in claim 7, wherein the blocking mechanism further comprises a torsion spring, and two torsion arms of the torsion spring are connected to the lifting frame and the blocking rod respectively.

9. The misidentification protection mechanism of PCB transshipment equipment as claimed in claim 1, 2 or 3, wherein the contact rod is connected with the lifting frame in a sliding manner along a horizontal direction, and the contact rod is fixed with the lifting frame through a locking structure.