A double push-arm feeding trolley

Abstract

This utility model discloses a double-push-arm feeding trolley for PCB processing. Addressing the problem that existing feeding trolleys have a fixed number of layers and are only compatible with a single press, this trolley includes a trolley body, a material rack, an upper push arm, a lower push arm, and independent drive units. The material rack is used for horizontal placement of multi-layer carrier boards. The upper push arm has multi-layer upper grippers at its front end, and the lower push arm has multi-layer lower grippers at its front end. The upper and lower drive units control their lifting and horizontal movement, respectively. When the two push arms work in tandem, the total number of layers is compatible with high-layer presses (e.g., 10 layers); when the lower push arm works alone, the number of lower gripper layers is compatible with low-layer presses (e.g., 8 layers). This utility model can accommodate two pressing specifications without changing the trolley, reducing equipment procurement and space occupation, eliminating downtime calibration procedures caused by replacement, reducing PCB layer alignment errors introduced by switching, and ensuring high pressing yield.

Description

Technical Field

[0001] This utility model belongs to the field of press feeding technology, and in particular relates to a double push arm feeding trolley. Background Technology

[0002] In the field of printed circuit board (PCB) processing, presses (such as hot presses and cold presses) are the core equipment for laminating and curing multilayer PCBs. The feeding process requires a feeding trolley to precisely and synchronously transport multiple layers of carrier boards (carrying the PCB substrate to be laminated and auxiliary materials). In existing technologies, the number of layers that the feeding trolley can handle is fixed; that is, the number of material rack layers and the number of push arm grippers are only compatible with a specific type of press with a specific layer capacity. For example, when a feeding trolley is designed to transport 10 layers, it can only be matched with a 10-layer press. If it needs to feed to an 8-layer press, a feeding trolley with the corresponding layer capacity must be replaced, or the push arm structure must be mechanically modified, resulting in low efficiency and high production costs. Utility Model Content

[0003] Based on this, and to address the aforementioned technical problems, a double-push-arm feeding trolley is provided.

[0004] The technical solution adopted in this utility model is as follows:

[0005] A double-push-arm feeding trolley includes a trolley body, a material rack for horizontally placing multiple layers of material-bearing plates at equal vertical intervals, a push arm for lowering so that its upper and lower multi-layer grippers respectively grasp the corresponding rear gripping parts of the material rack and push the material plates horizontally forward out of the material rack, and a drive mechanism for driving the push arm to rise and fall and move horizontally back and forth. The material rack and the drive mechanism are fixed to the trolley body. The push arm is located at the rear of the material rack and is connected to the drive mechanism. The push arm comprises an upper push arm and a lower push arm, and the multi-layer grippers are divided into upper and lower equidistant... The device comprises a multi-layered upper gripper and a multi-layered lower gripper arranged equidistantly. The multi-layered upper gripper is fixed to the front end of the upper push arm, and the multi-layered lower gripper is fixed to the front end of the lower push arm. The total number of layers of the upper and lower grippers is equal to the number of feeding layers of the first press, and the number of layers of the lower grippers is equal to the number of feeding layers of the second press. The driving mechanism includes an upper driving unit for driving the upper push arm to move up and down and horizontally back and forth, and a lower driving unit for driving the lower push arm to move up and down and horizontally back and forth. The upper driving unit is connected to the upper push arm, and the lower driving unit is connected to the lower push arm.

[0006] The upper and lower push arms of this invention can work independently or in conjunction. When the two push arms are linked, the total number of layers (upper gripper + lower gripper) is adapted to high-layer presses (such as 10-layer presses). When the lower push arm works alone, the number of layers of the lower gripper is adapted to low-layer presses (such as 8-layer presses). It can be compatible with two pressing specifications without changing the carriage, reducing the number of equipment purchased, reducing factory space occupation and fixed asset investment. At the same time, compared with the carriage replacement method in the prior art, it eliminates the downtime and recalibration process caused by replacement, reduces the PCB layer alignment error introduced by equipment switching, and ensures the pressing yield. Attached Figure Description

[0007] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments:

[0008] Figure 1 A three-dimensional structural diagram of a double-push-arm feeding trolley provided for an embodiment of this utility model;

[0009] Figure 2 This is a schematic diagram of the material rack structure according to an embodiment of the present utility model;

[0010] Figure 3 This is a schematic diagram of the gripper structure according to an embodiment of the present utility model;

[0011] Figure 4 This is a schematic diagram of the upper gripper in an embodiment of the present utility model;

[0012] Figure 5 This is a schematic diagram of the upper drive unit according to an embodiment of the present invention;

[0013] Figure 6 This is a vertical sectional view of the upper drive unit according to an embodiment of the present utility model;

[0014] Figure 7 This is a schematic diagram of the carrier plate in an embodiment of the present invention. Detailed Implementation

[0015] The embodiments of this utility model will be described below with reference to the accompanying drawings. It should be noted that the embodiments described in this specification are not exhaustive and do not represent the only embodiments of this utility model. The following corresponding embodiments are only for clearly illustrating the utility model content of this patent and are not intended to limit its implementation. For those skilled in the art, different variations and modifications can be made based on the described embodiments. Any obvious variations or modifications that fall within the technical concept and utility model content of this utility model are also within the protection scope of this utility model.

[0016] like Figure 1-3As shown, this utility model embodiment provides a double push-arm feeding trolley, including a trolley body 1100, a material rack 1200, a push arm 1300, a 10-layer gripper 1400, and a drive mechanism 1500.

[0017] The upper surface of the trolley body 1100 has a frame 1110 and two maintenance ladders 1120 located on the left and right sides of the frame 1110 respectively.

[0018] The bottom of the trolley body 1100 has four wheels 1130 for the trolley to move horizontally on the track 2 in the left and right directions. Two of the wheels 1130 are driving wheels driven by a motor, and the other two wheels 1130 are driven wheels. The above structure is prior art and will not be described in detail here.

[0019] The material rack 1200 is used to horizontally place 10 layers of carrier plates 3 that bear materials at equal vertical spacing, such as... Figure 2 As shown, it includes two side plates 1210 arranged opposite to each other on the left and right sides. The two side plates 1210 are fixed to the frame 1110 by bolts. Ten layers of support assemblies 1220 for supporting the left and right edges of the carrier plate 3 are provided on the opposite surfaces of the two side plates 1210. Each layer of support assembly 1220 includes a plurality of support rollers 1221 arranged at intervals in front and behind.

[0020] like Figure 2 As shown, the push arm 1300 includes an upper push arm 1310 and a lower push arm 1320, as... Figure 4 As shown, taking the push arm 1310 as an example, it includes two horizontal plates 1311 in the left and right directions. The two horizontal plates 1311 are arranged vertically at intervals. The rear side of each horizontal plate 1311 has two vertical plates 1311a arranged horizontally at intervals.

[0021] To improve the strength of the upper push arm 1310, the rear sides of the two horizontal plates 1311 are also connected together by two vertical plates 1311b on the left and right.

[0022] The lower push arm 1320 has the same structure as the upper push arm 1310, the difference being that the lower push arm 1320 has 8 horizontal plates.

[0023] like Figure 3 As shown, the 10-layer gripper 1400 is divided into two upper grippers 1410 arranged at equal intervals and eight lower grippers 1420 arranged at equal intervals. In this embodiment, all grippers are equidistant. The two upper grippers 1410 are fixed to the front end of the upper push arm 1310, and the eight lower grippers 1420 are fixed to the front end of the lower push arm 1320.

[0024] The upper gripper 1410 and the lower gripper 1420 have the same structure, such as Figure 4As shown, taking the above gripper 1410 as an example, it includes two fasteners 1411. The two fasteners 1411 are symmetrically fixed to the front side of the corresponding horizontal plate 1311 by bolts. The fasteners 1411 face the front-back direction, and their lower edges are lower than the lower edge of the horizontal plate 1311.

[0025] like Figure 2 As shown, the drive mechanism 1500 is located on the rear side of the material rack 1200. It includes an upper drive unit 1510 for driving the upper push arm 1310 to move up and down and horizontally back and forth, and a lower drive unit 1520 for driving the lower push arm 1320 to move up and down and horizontally back and forth.

[0026] Specifically, such as Figure 5 As shown, taking the drive unit 1510 as an example, it includes a front and rear horizontal drive module 1511 and a lifting module 1512.

[0027] The front and rear horizontal drive module 1511 includes a horizontal track 1511a in the front and rear direction, two drive chains 1511b and a sliding seat 1511c.

[0028] The horizontal track 1511a is bolted to the top of the frame 1110, and its lower surface has two rails 1511d arranged side-by-side in the front-back direction. See [reference needed] Figure 6 .

[0029] Two drive chains 1511b are arranged on the left and right sides of the horizontal track 1511a. The front and rear sprockets of the two drive chains 1511b are respectively connected to the two ends of the front and rear rotating shafts passing through the horizontal track 1511a. One of the rear sprockets is driven by a motor.

[0030] like Figure 6 As shown, the reverse side of the sliding seat 1511c rests on two rails 1511d, and upward-extending connecting parts 1511e are formed on its left and right sides. Multiple pins on the chain of the same-side transmission chain 1511b pass through the connecting parts 1511e, thereby fixing the sliding seat 1511c to the transmission chain 1511b. Under the drive of the motor, the sliding seat 1511c can move horizontally back and forth with the transmission chain 1511b.

[0031] The front of the sliding seat 1511c has a guide post 1511f.

[0032] like Figure 5 As shown, the lifting module 1512 uses a cylinder, which is fixed to the top of the guide column 1511f. The output end of the lifting module 1512 faces downward, and a lifting frame 1511g is connected to this output end. It can be raised and lowered under the drive of the lifting module 1512. The lifting frame 1511g slides vertically with the guide column 1511f and is connected to the rear end of the longitudinal plate 1311a of the upper push arm 1310 by bolts. Wherein, as Figure 6As shown, a copper plate 1511h is detachably fixed to the lifting frame 1511g by bolts for sliding cooperation with the four sides of the guide column 1511f, which is easy to replace when worn.

[0033] The lower drive unit 1520 has the same structure as the upper drive unit 1510, and the two are arranged in a mirror image. The lifting frame of the lower drive unit 1520 is connected to the rear end of the longitudinal plate of the lower push arm 1320 by bolts. The specific structure of the lower drive unit 1520 can be referred to the upper drive unit 1510, and will not be described in detail here.

[0034] When feeding material to the first press (the first press has 10 layers), the trolley body 1100 first moves to the front of the first press. Then, the upper drive unit 1510 and the lower drive unit 1520 operate simultaneously, first driving each gripper to descend and precisely insert into the two latching holes 31 on the rear side of the corresponding carrier plate 3 on the material rack 1200 (i.e., the gripper grasps the bearing part). See [link to relevant documentation]. Figure 7 Then, each gripper is driven to move forward horizontally, thereby simultaneously pushing the 10-layer carrier plate 3 out of the material rack 1200 and into the first press.

[0035] The process of feeding material to the second press (the second press has 8 layers) is similar to that of feeding material to the first press. The difference is that only the lower drive unit 1520 is activated, while the upper drive unit 1510 is not activated.

[0036] As can be seen from the above, the double-push-arm feeding trolley provided by this utility model embodiment has upper and lower push arms that can work independently or in concert. When the two push arms are linked, the total number of layers (upper gripper + lower gripper) is adapted to high-layer presses (such as 10-layer presses). When the lower push arm works alone, the number of layers of the lower gripper is adapted to low-layer presses (such as 8-layer presses). It can be compatible with two pressing specifications without changing the trolley, reducing the number of equipment purchased, reducing the factory space occupation and fixed asset investment. At the same time, compared with the existing technology of changing the trolley, it eliminates the downtime and recalibration process caused by the change, reduces the PCB layer alignment error introduced by equipment switching, and ensures the pressing yield.

[0037] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A double-push-arm feeding trolley, comprising a trolley body, a material rack for horizontally placing multiple layers of carrier plates carrying materials at equal vertical and horizontal intervals, a push arm for lowering so that its upper and lower multi-layer grippers at its front end respectively grasp the bearing portions on the rear side of the corresponding carrier plates on the material rack and push the carrier plates horizontally forward out of the material rack, and a drive mechanism for driving the push arm to lift and move horizontally back and forth, wherein the material rack and the drive mechanism are fixed to the trolley body, the push arm is located on the rear side of the material rack and is connected to the drive mechanism, characterized in that, The push arm includes an upper push arm and a lower push arm. The multi-layer gripper is divided into a multi-layer upper gripper and a multi-layer lower gripper arranged at equal intervals. The multi-layer upper gripper is fixed to the front end of the upper push arm, and the multi-layer lower gripper is fixed to the front end of the lower push arm. The total number of layers of the upper and lower grippers is equal to the number of feeding layers of the first press, and the number of layers of the lower gripper is equal to the number of feeding layers of the second press. The drive mechanism includes an upper drive unit for driving the upper push arm to move up and down and to move horizontally back and forth, and a lower drive unit for driving the lower push arm to move up and down and to move horizontally back and forth. The upper drive unit is connected to the upper push arm, and the lower drive unit is connected to the lower push arm.

2. A dual push arm feeder cart according to claim 1, wherein, The trolley body has a frame, and the material rack includes two side plates arranged opposite to each other on the left and right sides. The two side plates are fixed to the frame. The opposite surfaces of the two side plates are provided with multi-layer support assemblies for supporting the left and right edges of the carrier plate. Each layer of support assembly includes multiple support rollers arranged at intervals in front and behind.

3. A dual push arm pallet cart according to claim 2, wherein, Both the upper push arm and the lower push arm include multiple horizontal plates in the left-right direction. The multiple horizontal plates are arranged vertically at intervals. The number of multiple horizontal plates of the upper push arm is the same as the number of layers of the upper gripper. The number of multiple horizontal plates of the lower push arm is the same as the number of layers of the lower gripper. Each horizontal plate has two vertical plates arranged horizontally at intervals on its rear side. The rear end of the vertical plate of the upper push arm is connected to the upper drive unit. The rear end of the vertical plate of the lower push arm is connected to the lower drive unit. Both the upper gripper and the lower gripper include two fasteners that are symmetrically fixed to the front side of the corresponding horizontal plate. The lower edge of the fasteners is lower than the lower edge of the horizontal plate.

4. A dual push arm feeder cart according to claim 2, wherein, Both the upper drive unit and the lower drive unit include a front-to-back horizontal drive module and a lifting module. The front-to-back horizontal drive module is fixed on the frame and has a sliding seat that moves horizontally back and forth under the drive of the module. The front of the sliding seat has a guide post. The lifting module is fixed on the top of the guide post and has a lifting frame that moves up and down under the drive of the module. The lifting frame slides up and down with the guide post. The upper push arm is connected to the lifting frame of the upper drive unit, and the lower push arm is connected to the lifting frame of the lower drive unit.

5. A dual push arm pallet cart according to claim 2, wherein, The trolley body also has two maintenance ladders located on the left and right sides of the frame, respectively.

6. A dual push arm feeder cart according to claim 1, wherein, The upper gripper has 2 layers, and the lower gripper has 8 layers.

Images