Gridding cloth grabbing device, injection molding system and grabbing method of injection molding system

Abstract

The invention relates to a gridding cloth grabbing device, an injection molding system and a grabbing method of the injection molding system.The gridding cloth grabbing device comprises a mounting support, a gridding cloth grabbing mechanism and a gridding cloth pushing-out mechanism, and the gridding cloth grabbing mechanism and the gridding cloth pushing-out mechanism are both arranged on the mounting support. The gridding cloth gripper mechanism comprises a gripper, and the gripper can be connected with the mounting bracket in a lifting movement manner relative to the mounting bracket; and an elastic piece is arranged between the gripper and the mounting bracket. The gridding cloth grabbing device has the beneficial effects that in the process that the mounting bracket drives the gripper to abut against the gridding cloth, the gripper moves upwards relative to the mounting bracket, the elastic piece deforms, the elastic piece supports the gripper to vertically abut against the gridding cloth so as to be compacted on the gridding cloth, and then the gripper vertically compacted on the gridding cloth can be accurately inserted into a grid of the gridding cloth so as to grab the gridding cloth; and the situation that the gridding cloth is not compacted by the gripper and the gridding cloth is missed is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of automotive product processing, and particularly to a grid cloth grasping device, an injection molding system and a grasping method for the injection molding system. Background Art

[0002] During the production of automotive interior injection molded parts, a grasping device is used to grasp the grid cloth and send it into the injection molding machine, so that the grid cloth of glass fiber with high strength, good stability and anti-tensile property can be inlaid in the injection molded parts through the injection molding machine to improve the supportability and flexibility of the injection molded parts.

[0003] When the existing grid cloth grasping device grasps the grid cloth, it relies on the self-gravity of the grid cloth gripper to compact the grid cloth material pile and then grabs it. It is easy to miss grabbing the grid cloth due to insufficient compaction, and it is necessary to stop the machine for processing, which affects the production rhythm and reduces the production efficiency. Summary of the Invention

[0004] (1) Technical Problems to be Solved

[0005] In view of the above-mentioned disadvantages and deficiencies of the prior art, the present invention provides a grid cloth grasping device, an injection molding system and a grasping method for the injection molding system, which solves the technical problem that the existing grid cloth grasping device relies on its own gravity to compact the grid cloth material pile and then grabs it, and it is easy to miss grabbing the grid cloth due to insufficient compaction, and it is necessary to stop the machine for processing, resulting in reduced production efficiency.

[0006] (2) Technical Solutions

[0007] In order to achieve the above object, the main technical solutions adopted by the present invention include:

[0008] In the first aspect, an embodiment of the present invention provides a grid cloth grasping device, including a mounting bracket, and a grid cloth gripper mechanism and a grid cloth pushing mechanism both arranged on the mounting bracket;

[0009] The grid cloth gripper mechanism includes a gripper, and the gripper is connected to the mounting bracket in a manner that can move up and down relative to the mounting bracket; an elastic member is arranged between the gripper and the mounting bracket;

[0010] When the gripper does not abut against the grid cloth on the material tray, the elastic member is in a free state;

[0011] During the process that the mounting bracket drives the gripper to press against the grid cloth on the material tray, the gripper moves upward relative to the mounting bracket and the elastic member deforms and supports the gripper to vertically press against the grid cloth. After that, the gripper can penetrate into the grid of the grid cloth to grasp the grid cloth;

[0012] After the gripper releases the mesh fabric, the mesh fabric pushing mechanism can push the mesh fabric into the injection molding machine.

[0013] According to the present invention, the mesh fabric gripper mechanism further includes a base assembly;

[0014] The base assembly includes a guide rod seat and a guide rod; the guide rod seat is fixedly connected to the mounting bracket, the guide rod is coaxially inserted into the guide rod seat in a liftable manner, and the bottom end is connected to the gripper; the elastic member is coaxially sleeved on the guide rod and forms an elastic connection between the gripper and the guide rod seat;

[0015] During the process that the gripper presses against the mesh fabric on the material tray, the gripper drives the guide rod to move upward relative to the mounting bracket along the axial direction of the guide rod seat, and the elastic member is in a contracted or stretched deformation state to transmit a pressing force perpendicular to the mesh fabric to the gripper;

[0016] When the gripper leaves the material tray, the elastic member drives the guide rod to move downward relative to the mounting bracket along the axial direction of the guide rod seat to return.

[0017] According to the present invention, the bottom end of the guide rod is fixedly connected to the gripper through a connecting plate;

[0018] The bottom end of the elastic member abuts against the top end of the connecting plate, and the top end abuts against the bottom end of the guide rod seat;

[0019] The bottom end of the guide rod is inserted into a groove formed in the connecting plate, and a first anti-rotation plane formed on the peripheral wall of the bottom end of the guide rod fits against an anti-rotation plane formed on the inner peripheral wall of the groove;

[0020] A second anti-rotation plane formed on the peripheral wall of the top end of the guide rod fits against a third anti-rotation plane formed on the inner peripheral wall of the guide rod seat.

[0021] According to the present invention, a stepped portion is radially inwardly extended from the inner peripheral wall of the upper part of the guide rod seat, and the side wall of the stepped portion forms the third anti-rotation plane;

[0022] A first oil-free bushing is provided between the inner peripheral wall of the lower part of the guide rod seat and the outer periphery of the top end of the guide rod, and the top end of the elastic member abuts against the first oil-free bushing;

[0023] The top end of the guide rod is connected to a gasket that extends out of the guide rod seat to define the downward movement position of the guide rod.

[0024] According to the present invention, the number of the mesh fabric gripper mechanisms is multiple, and the multiple mesh fabric gripper mechanisms are arranged on the mounting bracket in a crisscross and extending manner, and the multiple mesh fabric gripper mechanisms can at least grasp the circumference of the mesh fabric.

[0025] According to the present invention, the gripper is a needle holder, and the needle holder includes a needle holder body, a needle group, and a needle group driver;

[0026] The needle group driver is arranged on the needle holder body, and the needle group is arranged at the bottom end of the needle holder body so as to be able to extend and retract relative to the needle holder body; the needle group includes a plurality of needle bodies arranged in parallel; the needle group driver is used to drive the needle group to be in an extended state and a retracted state;

[0027] After the elastic member deforms and supports the needle holder body to vertically press against the mesh cloth, the needle group is in an extended state, and the needle bodies can correspondingly penetrate into the meshes of the mesh cloth; when the needle group is in a retracted state, the needle bodies can be disengaged to release the mesh cloth; after the needle holder body disengages from the mesh cloth, the elastic member drives the gripper to move downward and return relative to the mounting bracket;

[0028] The mesh cloth pushing mechanism includes a driving seat, a driving member, and a push plate;

[0029] The driving seat is fixedly connected to the mounting bracket, the main body of the driving member is fixed on the driving seat, the driving end of the driving member is fixedly connected to the push plate, the driving member is used to drive the push plate to move up and down relative to the mounting bracket, and the push plate can push out the mesh cloth on the gripper;

[0030] A positioning groove capable of being inserted into a positioning member in the injection molding machine is arranged at the abutting end of the push plate, and a second oil-free bushing is arranged in the positioning groove.

[0031] According to the present invention, a first profile guide rail is arranged on the mounting bracket;

[0032] The mesh cloth gripper mechanism further includes a top plate, and the gripper is connected to the top plate so as to be able to move up and down relative to the top plate; a first long hole opened on the top plate and a slot of the first profile guide rail are sequentially penetrated by screws to fix the top plate on the first profile guide rail;

[0033] A second long hole opened on the mesh cloth pushing mechanism and a slot of the first profile guide rail are sequentially penetrated by screws to fix the mesh cloth pushing mechanism on the first profile guide rail.

[0034] In a second aspect, the present invention further provides an injection molding system, including the mesh cloth grabbing device as described above, and further including a support frame and an injection molding part grabbing device, and both the mesh cloth grabbing device and the injection molding part grabbing device are arranged on the support frame;

[0035] The injection molded part gripping device includes a single-finger air clamping mechanism capable of clamping the injection molded part and / or a vacuum suction cup mechanism capable of adsorbing on the outer surface of the injection molded part;

[0036] The mesh fabric gripping device further includes a monitor, and the monitor is arranged on the mounting bracket, the mesh fabric gripper mechanism or the mesh fabric pushing mechanism;

[0037] The monitor is used to monitor the distance between it and the topmost mesh fabric on the material tray;

[0038] The monitor is also used to monitor the distance between it and the mesh fabric grasped by the gripper; or,

[0039] The monitor is also used to monitor the number of meshes of the mesh fabric on the gripper within the monitoring area.

[0040] According to the present invention, the single-finger air clamping mechanism includes a first connecting rod, a second connecting rod, a first fixing frame and a second fixing frame;

[0041] The first fixing frame is provided with a long through hole capable of passing through a screw to be fixed on the support frame; the first end of the first connecting rod is inserted into the first fixing frame in a manner capable of rotating relative to the first fixing frame, and the second end of the first connecting rod is inserted into the second fixing frame in a manner capable of rotating relative to the second fixing frame;

[0042] The first end of the second connecting rod is inserted into the second fixing frame in a manner capable of rotating relative to the second fixing frame; the second end of the second connecting rod is sleeved with a first clamping member capable of axially moving relative to the second connecting rod, the second end of the second connecting rod is rotatably connected to a second clamping member, and the second clamping member can rotate in a direction approaching or departing from the first clamping member;

[0043] The vacuum suction cup mechanism includes a third connecting rod, a third fixing frame, a fixing rod and a vacuum disc body;

[0044] The third fixing frame is fixedly connected to the support frame; the first end of the third connecting rod is inserted into the third fixing frame in a manner capable of rotating relative to the third fixing frame and can move up and down relative to the third fixing frame; the second end of the third connecting rod is hinged to the fixing rod, the fixing rod is connected to the vacuum disc body in a communicating manner, and the inner cavity of the fixing rod can form a negative pressure chamber for the vacuum disc body.

[0045] In a third aspect, the present invention also provides a gripping method for the injection molding system as described above, including the following steps:

[0046] S1: Set the distance between the monitor and the gripper to a first distance a;

[0047] After the support frame drives the mesh cloth gripper mechanism to move above the material tray, the monitor monitors the second distance b between it and the topmost mesh cloth on the material tray;

[0048] S2: After the support frame drives the mesh cloth gripper mechanism to continue moving down by the difference between the first distance a and the second distance b, the gripper abuts against the topmost mesh cloth on the material tray;

[0049] S3: When the support frame drives the mesh cloth gripper mechanism to continue moving down by the first distance c, the gripper moves up by the first distance c relative to the mounting bracket and the elastic member deforms and supports the gripper to vertically press against the mesh cloth;

[0050] S4: After the gripper pierces into the mesh of the mesh cloth to grab the topmost mesh cloth, the support frame drives the mesh cloth gripper mechanism to move up by the second distance d, and the elastic member drives the gripper to move down and return relative to the mounting bracket;

[0051] S5: The monitor monitors whether the distance between it and the mesh cloth grabbed by the gripper is greater than |b - d + c|; if so, it is determined that the gripper has not grabbed the mesh cloth, and the injection molding system stops; if not, it is determined that the gripper has grabbed the mesh cloth, and S6 is entered; or,

[0052] The number of meshes of the mesh cloth within the monitoring area e is f, and the monitor monitors whether the number of meshes of the mesh cloth grabbed by the gripper within the monitoring area e is less than f; if so, it is determined that the gripper has not grabbed the mesh cloth, and the injection molding system stops; if not, S6 is entered;

[0053] S6: The support frame drives the entire injection molding system to move to the injection molding machine. After the vacuum suction cup mechanism and / or the single-finger air clamping mechanism adsorbs or clamps the molded injection molded part in the injection molding machine, the support frame removes the injection molded part from the injection molding machine through the vacuum suction cup mechanism and / or the single-finger air clamping mechanism and moves it to the workpiece table, and the vacuum suction cup mechanism and / or the single-finger air clamping mechanism unloads the injection molded part onto the workpiece table;

[0054] S7: The support frame drives the mesh cloth gripper mechanism to correspond to the positioning member in the injection molding machine. When the gripper disengages to release the mesh cloth, the mesh cloth pushing mechanism pushes the mesh cloth into the injection molding machine and inserts it onto the positioning member in the injection molding machine, and the injection molding machine inlays the mesh cloth onto the plastic part;

[0055] S8: The support frame drives the entire injection molding system to move to the workpiece table, and the vacuum suction cup mechanism and / or the single-finger air clamping mechanism unloads the injection molded part onto the workpiece table.

[0056] S9: Sequentially loop through steps S1 - S8.

[0057] (III) Beneficial Effects

[0058] The beneficial effects of the present invention are as follows: A grid cloth grasping device, an injection molding system, and a grasping method for the injection molding system of the present invention. When the mounting bracket drives the gripper to press against the grid cloth, the gripper moves upward relative to the mounting bracket and the elastic member deforms. The elastic member supports the gripper to vertically press against the grid cloth to compact it on the grid cloth. Subsequently, the gripper vertically pressed on the grid cloth can accurately penetrate into the grids of the grid cloth to grasp the grid cloth, avoiding missed grasping due to the gripper not being compacted on the grid cloth.

[0059] Meanwhile, this injection molding system integrates a grid cloth grasping device and an injection molded part grasping device, and can simultaneously achieve the grasping of the grid cloth and the grasping of the injection molded part with the grid cloth inlaid. By means of the vacuum suction cup mechanism and / or the single finger air clamping mechanism to adsorb or clamp the injection molded part, it can stably grasp the uneven surface of the molded injection molded part and avoid the injection molded part from falling. By monitoring the distance between the gripper of the grid cloth grasping device and the topmost grid cloth on the material tray, the moving distance of the grid cloth grasping device is controlled, improving the grasping accuracy. And the monitor judges whether the grid cloth is successfully grasped by monitoring the distance between it and the grid cloth grasped by the gripper or by monitoring the number of grids of the grid cloth grasped by the gripper within the monitoring area, avoiding the situation of missed grasping resulting in system shutdown for inspection, and improving the grasping accuracy and production efficiency.

[0060] Furthermore, the grasping method of this injection molding system can realize the cyclic operation of grasping the grid cloth, feeding the grid cloth into the injection molding machine, and grasping the injection molded part with the grid cloth inlaid, improving the production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0061] Figure 1 is a three-dimensional schematic diagram of the injection molding system of the present invention;

[0062] Figure 2 is Figure 1 another perspective schematic diagram;

[0063] Figure 3 is a three-dimensional schematic diagram of the grid cloth grasping device;

[0064] Figure 4 is Figure 3 exploded schematic diagram;

[0065] Figure 5 is a three-dimensional schematic diagram of the grid cloth gripper mechanism;

[0066] Figure 6 is Figure 5 exploded schematic diagram;

[0067] Figure 7 is a sectional view of; Figure 5 ;

[0068] Figure 8 is a perspective view of the mesh cloth pushing mechanism;

[0069] Figure 9 is an assembly view of the mesh cloth pushing mechanism and the monitor;

[0070] Figure 10 is a perspective view of the mounting base;

[0071] Figure 11 is a perspective view of the single-finger air clamping mechanism;

[0072] Figure 12 is a perspective view of the vacuum suction cup mechanism;

[0073] Figure 13 is a perspective view of the third fixing bracket;

[0074] Figure 14 is a perspective view of the injection molded part;

[0075] Figure 15 is an assembly view of the material tray and the mesh cloth.

[0076]

Description of the reference numerals

[0077] 1: Mesh cloth grasping device; 11: Mounting bracket; 111: First profile guide rail; 12: Mesh cloth gripper mechanism; 121: Gripper; 1211: Needle holder body; 1212: Needle group; 122: Base assembly; 1221: Elastic member; 1222: Guide rod seat; 12221: Third anti-rotation plane; 1223: Guide rod; 12231: First anti-rotation plane; 12232: Second anti-rotation plane; 1224: Connecting plate; 12241: First connection hole; 12242: Second connection hole; 1225: First oil-free bushing; 1226: Top plate; 12261: First long hole; 1227: Gasket; 12281: First screw; 12282: Second screw; 12283: Third screw; 13: Mesh cloth pushing mechanism; 131: Push plate; 1311: Push plate positioning hole; 1312: Push plate mounting hole; 1313: Bushing positioning hole; 132: Driving member; 133: Driving seat; 1331: Second long hole; 134: Second oil-free bushing; 141: Monitor; 142: Monitor mounting plate; 1421: Third long hole; 15: Mounting base; 151: Upper cover plate; 1512: Upper plate mounting hole; 1513: Upper plate positioning hole; 152: Support block; 153: Lower cover plate; 1531: Lower plate positioning hole; 1532: Lower plate mounting hole; 1533: Wire threading hole;

[0078] 2: Injection molded part gripping device; 21: Single-finger air clamping mechanism; 211: First connecting rod; 212: Second connecting rod; 213: First fixing bracket; 214: Second fixing bracket; 215: First clamping member; 216: Second clamping member; 22: Vacuum suction cup mechanism; 221: Third fixing bracket; 2211: Bracket mounting hole; 2212: Clamping hole; 2213: Through groove; 2214: Threaded hole; 222: Third connecting rod; 223: Fixed rod; 224: Vacuum suction cup

[0079] 3: Support frame; 31: Quick-change disc; 32: Vacuum generator; 33: Valve group

[0080] 4: Material tray; 41: Positioning rod

[0081] 5: Injection molded part

[0082] 6: Mesh fabric Detailed implementation manners

[0083] For better explaining the present invention for easy understanding, the present invention will be described in detail below in conjunction with the accompanying drawings through specific implementation manners. Among them, the orientation nouns such as "top", "bottom", "upper", "lower", etc. mentioned in this article are referenced to the orientation when the mesh fabric gripper device is used to grip the mesh fabric Figure 7 in the middle

[0084] Embodiment 1

[0085] See Figures 1 - 15 As shown, the mesh fabric gripping device 1 proposed in the embodiment of the present invention includes a mounting bracket 11, and a mesh fabric gripper mechanism 12 and a mesh fabric pushing mechanism both arranged on the mounting bracket 11. The mesh fabric gripper mechanism 12 is used to grip a single-layer mesh fabric 6, and the mesh fabric pushing mechanism is used to push the single-layer mesh fabric 6 gripped by the mesh fabric gripper mechanism 12 into an injection molding machine for injection molding

[0086] Among them, a plurality of mesh fabrics 6 are stacked up and down on the material tray 4, and the positioning holes provided on the mesh fabric 6 can be inserted into the positioning rods 41 vertically arranged on the material tray. The positioning rod 41 is preferably a pin

[0087] The mesh fabric gripper mechanism 12 includes a gripper 121, and the gripper 121 is connected to the mounting bracket 11 in a manner that can move up and down relative to the mounting bracket 11. An elastic member 1221 is arranged between the gripper 121 and the mounting bracket 11

[0088] When the gripper 121 does not abut against the mesh fabric 6 on the material tray 4, the elastic member 1221 is in a free state

[0089] When the mounting bracket 11 drives the gripper 121 to press against the mesh fabric 6 on the material tray 4, the gripper 121 moves upward relative to the mounting bracket 11 and the elastic member 1221 deforms. The elastic member supports the gripper 121 to vertically press against the mesh fabric 6 to compact it. Subsequently, the gripper 121 vertically pressed against the mesh fabric 6 can accurately penetrate into the meshes of the mesh fabric 6 to grasp the mesh fabric 6, preventing the gripper 121 from missing the pick-up due to not being compacted on the mesh fabric 6.

[0090] After the gripper 121 releases the mesh fabric 6, the mesh fabric pushing mechanism 13 can push the mesh fabric 6 into the injection molding machine and inlay it in the injection molded part 5.

[0091] It should be noted that since the mesh size of the mesh fabric 6 used in the automotive interior injection molded part 5 is relatively large, it is difficult to stably adsorb the mesh fabric 6 by the conventional negative pressure adsorption method. Therefore, the gripper 121 of this mesh fabric device adopts the method of penetrating into the meshes of the mesh fabric 6 to stably grasp the mesh fabric 6.

[0092] Preferably, the number of the mesh fabric gripper mechanisms 12 is multiple. The grippers 121 of the multiple mesh fabric gripper mechanisms 12 can penetrate into at least the meshes in the circumferential direction of the mesh fabric 6 to prevent the corners from drooping due to the relatively soft material of the mesh fabric 6 when locally grasping the mesh fabric 6. More preferably, the number of the mesh fabric gripper mechanisms 12 is eight to uniformly press on the entire mesh fabric 6 and improve the grasping stability.

[0093] More preferably, the multiple mesh fabric gripper mechanisms 12 are arranged on the mounting bracket 11 in a crisscross manner in the horizontal and vertical directions, so that when grasping the mesh fabric 6, the multiple grippers 121 vertically press against different positions of the mesh fabric 6 and at least penetrate into the meshes in the circumferential direction of the mesh fabric 6, realizing uniform compaction and stable grasping of the mesh fabric 6.

[0094] Furthermore, the mesh fabric gripper mechanism 12 further includes a base assembly 122.

[0095] The base assembly 122 includes a guide rod seat 1222 and a guide rod 1223. The guide rod seat 1222 is fixedly connected to the mounting bracket 11. The guide rod 1223 is coaxially inserted into the guide rod seat 1222 in a liftable manner, and the bottom end is connected to the gripper 121. The guide rod seat 1222 is used to limit the lift movement of the guide rod 1223 along the axial direction of the guide rod seat 1222 to improve the movement accuracy of the guide rod 1223.

[0096] Specifically, the elastic member 1221 is coaxially sleeved on the guide rod 1223 and forms an elastic connection between the gripper 121 and the guide rod seat 1222 to transmit the supporting force vertically pressing against the mesh fabric 6 to the gripper 121 when deforming.

[0097] During use, when the gripper 121 does not contact the mesh cloth 6 on the material tray 4, the elastic member 1221 is in a free state.

[0098] During the process that the gripper 121 presses against the mesh cloth 6 on the material tray 4, the gripper 121 drives the guide rod 1223 to move upward along the axial direction of the guide rod seat 1222 relative to the mounting bracket 11, and the elastic member 1221 is in a deformed state of contraction or tension, and transmits the supporting force vertically pressing against the mesh cloth 6 to the gripper 121.

[0099] Specifically, the bottom end of the elastic member 1221 abuts against the top end of the connecting plate 1224, and the top end abuts against the bottom end of the guide rod seat 1222. During the process that the gripper 121 presses against the mesh cloth 6, the elastic member 1221 is in a contracted state. Preferably, the elastic member 1221 is a rectangular spring to provide a large supporting force.

[0100] Specifically, the bottom end of the guide rod 1223 is fixedly connected to the gripper 121 through the connecting plate 1224. More specifically, the first connection hole 12241 formed in the connecting plate 1224 is connected to the bottom end of the guide rod 1223 by screws, preferably countersunk bolts. The second connection hole 12242 formed in the connecting plate 1224 is connected to the top end of the gripper 121 by the first screw 12281. Specifically, the bottom end of the guide rod 1223 is inserted into the groove formed in the connecting plate 1224, and the first anti-rotation plane 12231 formed on the peripheral wall of the bottom end of the guide rod 1223 fits the anti-rotation plane formed on the inner peripheral wall of the groove. The second anti-rotation plane 12232 formed on the peripheral wall of the top end of the guide rod 1223 fits the third anti-rotation plane 12221 formed on the inner peripheral wall of the guide rod seat 1222. Through the cooperation of the anti-rotation planes on the guide rod 1223 and the anti-rotation planes on the connecting plate 1224 and the guide rod seat 1222, it is restricted that the guide rod 1223 can only move up and down along the axial direction of the guide rod seat 1222 and cannot rotate relative to the guide rod seat 1222, avoiding the change of the gripping position of the gripper 121 caused by the rotation of the gripper 121 when the guide rod 1223 moves up and down, and thus improving the gripping accuracy of the gripper 121.

[0101] More specifically, a stepped portion is formed by the radially inward extension of the inner peripheral wall of the upper part of the guide rod seat 1222, and the side wall of the stepped portion forms the third anti-rotation plane 12221.

[0102] Specifically, a first oil-free bushing 1225 is provided between the inner peripheral wall of the lower part of the guide rod seat 1222 and the outer periphery of the top end of the guide rod 1223, and the top end of the elastic member 1221 abuts against the first oil-free bushing 1225. When the guide rod 1223 moves up and down relative to the guide rod seat 1222, it can move along the inner peripheral wall of the first oil-free bushing 1225, playing a role in reducing friction and resistance. More specifically, the first oil-free bushing 1225 is fixed to the lower part of the guide rod seat 1222 by the second screw 12282.

[0103] Specifically, the top end of the guide rod 1223 is connected to a gasket 1227 that extends out of the guide rod seat 1222 to define the downward movement position of the guide rod 1223. More specifically, the top end of the guide rod 1223 is fixedly connected to the gasket 1227 by a third screw 12283.

[0104] Specifically, the mesh cloth gripper mechanism 12 further includes a top plate 1226 fixedly connected to the top of the guide rod seat 1222. The guide rod seat 1222 is fixedly connected to the mounting bracket 11 through the top plate 1226. The gasket 1227 can abut against the top of the top plate 1226 to define the downward movement position of the guide rod 1223.

[0105] Furthermore, the gripper 121 is a needle holder, and the needle holder includes a needle holder body 1211, a needle group 1212, and a needle group driver.

[0106] The needle group driver is arranged on the needle holder body 1211. The needle group 1212 is arranged at the bottom end of the needle holder body 1211 in a manner that can extend and retract relative to the needle holder body 1211. The needle group 1212 includes a plurality of needle bodies arranged in parallel. The needle group driver is used to drive the needle group 1212 to be in an extended state and a retracted state.

[0107] After the elastic member 1221 deforms and supports the needle holder body 1211 to vertically press against the mesh cloth 6, the needle group 1212 is in an extended state, and the needle bodies can be respectively inserted into the meshes of the mesh cloth 6. When the needle group 1212 is in a retracted state, the needle bodies can be disengaged to release the mesh cloth 6. After the needle holder body 1211 disengages from the mesh cloth 6, the elastic member 1221 drives the gripper 121 to move downward and return relative to the mounting bracket 11.

[0108] Furthermore, the number of mesh cloth pushing mechanisms 13 is preferably at least one. At least one mesh cloth pushing mechanism 13 can simultaneously abut against both ends of the mesh cloth 6 released by the gripper 121 in the length or width direction to accurately push the entire mesh cloth 6 into the injection molding machine.

[0109] More preferably, the number of mesh cloth pushing mechanisms 13 is two. The two mesh cloth pushing mechanisms can simultaneously abut against both ends of the mesh cloth 6 released by the gripper 121 to simplify the structure.

[0110] Furthermore, the mesh cloth pushing mechanism 13 includes a driving seat 133, a driving member 132, and a pushing plate 131.

[0111] The driving seat 133 is fixedly connected to the mounting bracket 11. The main body of the driving member 132 is fixed on the driving seat 133. The driving end of the driving member 132 is fixedly connected to the pushing plate 131. The driving member 132 is used to drive the pushing plate 131 to move up and down relative to the mounting bracket 11, and the pushing plate 131 can push out the mesh cloth 6 on the gripper 121.

[0112] Specifically, the driving member 132 is a cylinder.

[0113] Specifically, the abutting end of the pushing plate 131 is provided with positioning grooves that can be inserted into the positioning members inside the injection molding machine, so as to push the mesh fabric 6 to be inserted onto the positioning members, improving the positioning accuracy of the mesh fabric 6. Preferably, the number of the positioning grooves and the positioning members is two each, and the two positioning grooves are arranged at intervals along the length direction of the pushing plate 131 to stably insert the mesh fabric 6 onto the positioning members. Optionally, the positioning member is a pin.

[0114] Preferably, a second oil-free bushing 134 is arranged inside the positioning groove to play a role in reducing friction and resistance during the process of inserting or pulling out the positioning member from the positioning groove.

[0115] Specifically, a bushing positioning hole 1313 is formed on the pushing plate 131, and a pin is inserted into the bushing positioning hole 1313 to fix the second oil-free bushing 134. The pushing plate 131 is further provided with a pushing plate positioning hole 1311 and a pushing plate mounting hole 1312. A pin is inserted into the pushing plate positioning hole 1311 and a screw is screwed into the pushing plate mounting hole 1312 to fix the pushing plate 131 to the driving end of the driving member 132.

[0116] Furthermore, a first profile guide rail 111 is arranged on the mounting bracket 11.

[0117] Specifically, screws are sequentially passed through the first long hole 12261 formed on the top plate 1226 and the slot of the first profile guide rail 111 to fix the top plate 1226 to the first profile guide rail 111.

[0118] Screws are sequentially passed through the second long hole 1331 formed on the mesh fabric pushing mechanism 13 and the slot of the first profile guide rail 111 to fix the mesh fabric pushing mechanism 13 to the first profile guide rail 111.

[0119] During use, by adjusting the mounting position of the top plate 1226 on the profile guide rail and the mounting position of the screw on the first long through hole, the setting position of each mesh fabric gripping mechanism 12 can be conveniently adjusted to better adapt to gripping mesh fabrics 6 of different sizes. By adjusting the mounting position of the mesh fabric pushing mechanism 13 on the first profile guide rail 111 and the mounting position of the screw in the second long hole 1331, the mounting position of each mesh fabric pushing mechanism 13 on the first profile guide rail 111 can be conveniently adjusted to adapt to pushing mesh fabrics 6 of different sizes.

[0120] Specifically, a second long hole 1331 is formed on the driving seat 133 of the mesh fabric pushing mechanism 13.

[0121] Embodiment 2

[0122] On the basis of Embodiment 1, this embodiment further provides an injection molding system. The injection molding system includes a mesh cloth gripping device 1, and further includes a support frame 3 and an injection molded part gripping device 2. The mesh cloth gripping device 1 and the injection molded part gripping device 2 are both arranged on the support frame 3.

[0123] Specifically, the injection molded part gripping device 2 includes a single-finger air clamping mechanism 21 capable of clamping an injection molded part 5 and / or a vacuum suction cup mechanism 22 capable of adsorbing to the outer surface of the injection molded part 5.

[0124] This injection molding system integrates the mesh cloth gripping device 1 and the injection molded part gripping device 2, and can simultaneously achieve the gripping of the mesh cloth 6 and the gripping of the injection molded part 5 embedded with the mesh cloth 6. By adsorbing or clamping the injection molded part 5 through the vacuum suction cup mechanism 22 and / or the single-finger air clamping mechanism 21, the uneven surface of the molded injection molded part 5 can be stably gripped, avoiding the dropping of the injection molded part 5.

[0125] Furthermore, the mounting bracket 11 of the mesh cloth gripping device 1 is fixedly connected to the support frame 3 through a mounting base 15.

[0126] The mounting base 15 sequentially includes an upper cover plate 151, a support block 152, and a lower cover plate 153 from top to bottom. The upper cover plate 151 and the lower cover plate 153 are both fixed to the upper and lower ends of the support block 152, preferably by welding. The upper cover plate 151 is fixedly connected to the mounting base 15 by screws, and the lower cover plate 153 is fixedly connected to the support frame 3 by screws. Through holes 1533 for passing a wire body are sequentially formed on the upper cover plate 151, the support block 152, and the lower cover plate 153. More specifically, screws are passed through the upper plate mounting holes 1512 formed on the upper cover plate 151 and the lower plate positioning holes 1531 formed on the lower cover plate 153 for connection, and pins are passed through the upper plate positioning holes 1513 formed on the upper cover plate 151 and the lower plate positioning holes 1531 formed on the lower cover plate 153 for positioning. Preferably, the support block 152 is a square steel.

[0127] Furthermore, the injection molded part gripping device 2 preferably includes both the single-finger air clamping mechanism 21 and the vacuum suction cup mechanism 22 at the same time. The single-finger air clamping mechanism 21 clamps the edge of the injection molded part 5, and the vacuum suction cup mechanism 22 adsorbs the end face of the injection molded part 5 to ensure successful gripping and stable clamping of the injection molded part 5, prevent the injection molded part 5 from dropping, and is convenient to operate, and is applicable to gripping injection molded parts 5 with different external dimensions, and has good versatility.

[0128] Furthermore, the single-finger air clamping mechanism 21 includes a first connecting rod 211, a second connecting rod 212, a first fixing frame 213, and a second fixing frame 214.

[0129] A long through hole capable of passing through a screw for fixing to the support frame 3 is formed on the first fixing frame 213. The first end of the first connecting rod 211 is inserted into the first fixing frame 213 in a manner that can rotate relative to the first fixing frame 213, and the second end of the first connecting rod 211 is inserted into the second fixing frame 214 in a manner that can rotate relative to the second fixing frame 214.

[0130] The first end of the second connecting rod 212 is inserted into the second fixing frame 214 in a manner that can rotate relative to the second fixing frame 214. The second end of the second connecting rod 212 is sleeved with a first clamping member 215 that can move axially relative to the second connecting rod 212. The second end portion of the second connecting rod 212 is rotatably connected to a second clamping member 216, and the second clamping member 216 can rotate in a direction approaching or away from the first clamping member 215. When the second clamping member 216 rotates in a direction approaching the first clamping member 215, the first clamping member 215 and the second clamping member 216 can clamp the injection molded part 5. When the second clamping member 216 rotates in a direction away from the first clamping member 215, the injection molded part 5 can be released.

[0131] By adjusting the installation position of the first fixing frame 213 on the support frame 3, and rotating the first connecting rod 211 and the second connecting rod 212, the corresponding angles and positions of the first clamping member 215 and the second clamping member 216 can be adjusted to better adapt to clamping injection molded parts 5 with different sizes and shapes. By adjusting the axial position of the first clamping member 215 relative to the second connecting rod 212, the distance between the first clamping member 215 and the second clamping member 216 can be changed to be applicable to clamping injection molded parts 5 with different thicknesses. As can be seen from the above, the universality of this single-finger air clamping mechanism 21 is relatively good.

[0132] Specifically, after rotating the first connecting rod 211 and the second connecting rod 212, the screws passing through the first fixing frame 213 and the second fixing frame 214 are tightened to clamp and fix the first connecting rod 211 and the second connecting rod 212. After adjusting the axial position of the first clamping member 215 relative to the second connecting rod 212, the screw passing through the first clamping member 215 is tightened to clamp and fix the first clamping member 215 on the second connecting rod 212. The second clamping member 216 is hinged to the second end portion of the second connecting rod 212.

[0133] Specifically, a cavity is formed in the second connecting rod 212, and a rotation driving member for driving the second clamping member 216 to rotate is arranged in the cavity. The main body of the rotation driving member is fixed inside the second clamping member 216, and the driving end of the rotation driving member is fixedly connected to the first clamping member 215. The rotation driving member is preferably a cylinder.

[0134] Furthermore, the vacuum chuck mechanism 22 includes a third connecting rod 222, a third fixing frame 221, a fixing rod 223, and a vacuum chuck body 224.

[0135] The third fixing bracket 221 is fixedly connected to the support bracket 3. The first end of the third connecting rod 222 is inserted into the third fixing bracket 221 in a manner that can rotate relative to the third fixing bracket 221, and can move up and down relative to the third fixing bracket 221. The second end of the third connecting rod 222 is hinged to the fixing rod 223. The fixing rod 223 is connected to the vacuum disc body 224 in a communicating manner. The inner cavity of the fixing rod 223 can form a negative pressure chamber for the vacuum disc body 224, and the vacuum disc body 224 can adsorb on the outer surface of the injection molded part 5.

[0136] By rotating the third connecting rod 222 relative to the third fixing bracket 221, rotating the third connecting rod around the second end, and moving the third connecting rod 222 up and down relative to the third fixing bracket 221, the corresponding angle and position of the vacuum disc body 224 are adjusted to adapt to adsorb on the surfaces of injection molded parts 5 with different sizes and shapes, and the versatility is relatively good.

[0137] Specifically, the third fixing bracket 221 includes a first plate and a second plate that are perpendicular to each other. Screws are inserted through the bracket mounting holes 2211 opened on the first plate to fixedly connect to the support bracket 3. The clamping holes 2212 opened on the second plate communicate with the notches opened on the second plate. A through groove 2213 extending along the axial direction is opened on the inner wall of the clamping hole 2212 to allow the aperture of the clamping hole 2212 to change. A threaded hole 2214 perpendicular to the notch is also opened on the second plate. After the third connecting rod 222 is clamped in the clamping hole 2212, a screw is screwed into the threaded hole 2214 to adjust the gap of the notch, and then the aperture of the clamping hole 2212 is adjusted to clamp the outer circumference of the third connecting rod 222.

[0138] Preferably, the number of single-finger air clamping mechanisms 21 is multiple, and the multiple single-finger air clamping mechanisms 21 are arranged at intervals in a ring on the support bracket 3. The number of vacuum suction cup mechanisms 22 is multiple, and the multiple vacuum suction cup mechanisms 22 are arranged at intervals on the support bracket 3 and are located between the rings formed by the multiple single-finger air clamping mechanisms 21. The circumferential edge of the injection molded part 5 is clamped by the multiple single-finger air clamping mechanisms 21, and the end face of the injection molded part 5 is adsorbed by the multiple vacuum suction cup mechanisms 22 to improve the grasping stability of the injection molded part 5. More preferably, the number of single-finger air clamping mechanisms 21 is 6, and the number of vacuum suction cup mechanisms 22 is 4 to stably grasp the injection molded part 5.

[0139] Furthermore, a quick-change disc 31 is arranged on the support bracket 3. The support bracket 3 is detachably connected to the robotic wall through the quick-change disc 31, and the multi-axis robotic arm drives the injection molding system to move through the support bracket 3.

[0140] Specifically, a vacuum generator 32 is also arranged on the support bracket 3. The vacuum generator 32 is connected to the inner cavity of the fixing rod 223 through a pipe body to form a negative pressure cavity in the fixing rod 223.

[0141] A valve group 33 is also provided on the support frame 3 to control the operation of the injection molding system.

[0142] Preferably, the support frame 3 is a profile frame, and the mesh fabric gripper mechanism 12, the mounting bracket 11, the mesh fabric pushing mechanism 13, and the injection molded part gripping mechanism are all detachably mounted on the support frame 3 by screws, so as to facilitate adjusting the mounting positions of the mesh fabric gripper mechanism 12, the mounting bracket 11, the mesh fabric pushing mechanism 13, and the injection molded part gripping mechanism.

[0143] Furthermore, the mesh fabric gripping device 1 further includes a monitor 141, and the monitor 141 is arranged on the mounting bracket 11, the mesh fabric gripper mechanism 12 or the mesh fabric pushing mechanism 13.

[0144] The monitor 141 is used to monitor the distance between it and the topmost layer of the mesh fabric 6 on the material tray 4.

[0145] The monitor 141 is also used to monitor the distance between it and the mesh fabric 6 gripped by the gripper 121. When the actual distance is greater than the calculated distance, it indicates that the gripper 121 fails to successfully grip the mesh fabric 6 or the gripped mesh fabric 6 has its edge drooping; or,

[0146] The monitor 141 is also used to monitor the number of meshes of the mesh fabric 6 gripped by the gripper 121 within the monitoring area. When the actual number of meshes monitored is less than the calculated number of meshes of the mesh fabric 6 within the monitoring area, it indicates that the gripper 121 fails to successfully grip the mesh fabric 6 or the gripped mesh fabric 6 has its edge drooping.

[0147] By monitoring the distance between the gripper 121 of the mesh fabric gripping device 1 and the topmost layer of the mesh fabric 6 on the material tray 4 by the monitor 141 to control the moving distance of the mesh fabric gripping device 1, the gripping accuracy is improved. And the monitor 141 judges whether the gripper 121 successfully grips the mesh fabric 6 by monitoring the distance between the mesh fabric 6 on the gripper 121 and the sensor or by monitoring the number of meshes of the mesh fabric 6 on the gripper 121 within the monitoring area, avoiding missed picking that leads to system shutdown for inspection, and improving the gripping accuracy and production efficiency.

[0148] Specifically, the monitor 141 is arranged on the mounting bracket 11, the mesh fabric gripper mechanism 12 or the mesh fabric pushing mechanism 13 through a monitor mounting plate 142. A vertically oriented third elongated hole 1421 is opened on the monitor mounting plate 142, and a screw can be inserted into the third elongated hole 1421 to fixedly connect the monitor mounting plate to the mounting bracket 11, the mesh fabric gripper mechanism 12 or the mesh fabric pushing mechanism 13. By adjusting the position of the screw, the up-and-down mounting position of the monitor 141 can be correspondingly adjusted.

[0149] Preferably, the monitor 141 is mounted on the driving seat 133 of the mesh fabric pushing mechanism 13.

[0150] Specifically, the monitor 141 is a distance sensor, which can monitor the distance between the gripper 121 and the uppermost layer of the mesh cloth 6 on the material tray 4, as well as the distance between it and the mesh cloth 6 grasped by the gripper 121. The monitor 141 can also be a distance sensor and a vision camera, which can respectively monitor the distance between the gripper 121 and the uppermost layer of the mesh cloth 6 on the material tray 4 and the number of meshes of the mesh cloth 6 grasped by the gripper 121 within the monitoring area.

[0151] Embodiment 3

[0152] On the basis of Embodiment 2, this embodiment further provides a grasping method for an injection molding system.

[0153] The grasping method of this injection molding system includes the following steps:

[0154] S1: Install the monitor 141 at a position where the distance from the grasping end of the gripper 121 is the first distance a, so that the distance between the monitor 141 and the gripper 121 is set to the first distance a.

[0155] After the support frame 3 drives the mesh cloth gripper mechanism 12 to move above the material tray 4, the monitor 141 monitors the second distance b between it and the uppermost layer of the mesh cloth 6 on the material tray 4.

[0156] S2: After the support frame 3 drives the mesh cloth gripper mechanism 12 to continue moving down by the difference between the first distance a and the second distance b, the gripper 121 abuts against the uppermost layer of the mesh cloth 6 on the material tray 4.

[0157] S3: When the support frame 3 drives the mesh cloth gripper mechanism 12 to continue moving down by the first distance c, the gripper 121 moves up by the first distance c relative to the mounting bracket 11, and the elastic member 1221 deforms and supports the gripper 121 to vertically press against the mesh cloth 6.

[0158] S4: After the gripper 121 pierces into the mesh of the mesh cloth 6 to grasp the uppermost layer of the mesh cloth 6, the support frame 3 drives the mesh cloth gripper mechanism 12 to move up by the second distance d, and the elastic member 1221 drives the gripper 121 to move down and return relative to the mounting bracket 11.

[0159] S5: The monitor 141 monitors whether the distance between it and the mesh cloth 6 grasped by the gripper 121 is greater than |b - d + c|: If so, it is determined that the gripper 121 does not grasp the mesh cloth 6, and the injection molding system stops; if not, it is determined that the gripper 121 grasps the mesh cloth 6, and enter S4; or,

[0160] The number of meshes of the mesh cloth 6 within the monitoring area e is f. The monitor 141 monitors whether the number of meshes of the mesh cloth 6 grasped by the gripper 121 within the monitoring area e is less than f: If so, it is determined that the gripper 121 does not grasp the mesh cloth 6, and the injection molding system stops; if not, enter S6.

[0161] S6: The support frame 3 drives the entire injection molding system to move to the injection molding machine. After the vacuum chuck mechanism 22 and / or the single-finger air clamping mechanism 21 adsorbs or clamps the molded injection molded part 5 in the injection molding machine, the support frame 3 removes the injection molded part 5 from the injection molding machine through the vacuum chuck mechanism 22 and / or the single-finger air clamping mechanism 21 and moves it to the workpiece table, and the vacuum chuck mechanism 22 and / or the single-finger air clamping mechanism 21 unloads the injection molded part 5 onto the workpiece table.

[0162] S7: The support frame 3 drives the mesh cloth gripper mechanism 12 to correspond to the positioning part in the injection molding machine. The gripper 121 drives the mesh cloth 6 to abut against the positioning part in the injection molding machine. After the gripper 121 disengages to release the mesh cloth 6, the mesh cloth pushing mechanism 13 pushes the mesh cloth 6 into the injection molding machine and inserts it onto the positioning part. Subsequently, the injection molding machine inlays the mesh cloth 6 onto the plastic part.

[0163] S8: The support frame 3 drives the entire injection molding system to move to the workpiece table, and the vacuum chuck mechanism 22 and / or the single-finger air clamping mechanism 21 unloads the injection molded part 5 onto the workpiece table.

[0164] S9: Sequentially loop through steps S1 - S8.

[0165] Thus, the grasping method of this injection molding system can realize the cyclic operation of grasping the mesh cloth 6 and the injection molded part 5 inlaid with the mesh cloth 6, improving the production efficiency and having simple operation.

[0166] Specifically, when the injection molded part grasping device 2 includes the single-finger air clamping mechanism 21 and the vacuum chuck mechanism 22, step S6 further includes:

[0167] The support frame 3 drives the entire injection molding system to move to the injection molding machine. The single-finger air clamping mechanism 21 clamps the edge of the injection molded part 5, and at the same time, the vacuum chuck mechanism 22 adsorbs the end face of the injection molded part 5. After the support frame 3 drives the single-finger air clamping mechanism 21 and the vacuum chuck mechanism 22 to hold the molded injection molded part 5, the support frame 3 removes the injection molded part 5 from the injection molding machine through the vacuum chuck mechanism 22 and the single-finger air clamping mechanism 21 and moves it to the workpiece table, and the vacuum chuck mechanism 22 and the single-finger air clamping mechanism 21 unload the injection molded part 5 onto the workpiece table.

[0168] Step S8 further includes:

[0169] The support frame 3 drives the entire injection molding system to move to the workpiece table. Both the single-finger air clamping mechanism 21 and the vacuum chuck mechanism 22 release the injection molded part 5 and unload the injection molded part 5 onto the workpiece table.

[0170] Optionally, the first distance c is 0 - 10 mm.

[0171] In the description of this specification, the descriptions of terms such as "one embodiment", "some embodiments", "embodiment", "example", "specific example", or "some examples" mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0172] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A mesh fabric grabbing device, characterized in that, It includes an installation bracket (11), a mesh fabric gripper mechanism (12) and a mesh fabric pushing mechanism (13) both arranged on the installation bracket (11); The mesh fabric gripper mechanism (12) includes a gripper (121), and the gripper (121) is connected to the installation bracket (11) in a manner that can move up and down relative to the installation bracket (11); an elastic member (1221) is arranged between the gripper (121) and the installation bracket (11); When the gripper (121) does not abut against the mesh fabric (6) on the material tray (4), the elastic member (1221) is in a free state; During the process that the installation bracket (11) drives the gripper (121) to press against the mesh fabric (6) on the material tray (4), the gripper (121) moves upward relative to the installation bracket (11), and the elastic member (1221) deforms. After the gripper (121) is vertically pressed against the mesh fabric (6) and supported by the elastic member (1221), the gripper (121) can penetrate into the grid of the mesh fabric (6) to grab the mesh fabric (6); After the gripper (121) releases the mesh fabric (6), the mesh fabric pushing mechanism (13) can push the mesh fabric (6) into the injection molding machine.

2. The mesh fabric gripping device according to claim 1, wherein The mesh fabric gripper mechanism (12) further includes a base assembly (122); The base assembly (122) includes a guide rod seat (1222) and a guide rod (1223); the guide rod seat (1222) is fixedly connected to the installation bracket (11), the guide rod (1223) is coaxially inserted into the guide rod seat (1222) in a manner that can move up and down, and the bottom end is connected to the gripper (121); the elastic member (1221) is coaxially sleeved on the guide rod (1223) and forms an elastic connection between the gripper (121) and the guide rod seat (1222); During the process that the gripper (121) presses against the mesh fabric on the material tray (4), the gripper (121) drives the guide rod (1223) to move upward relative to the installation bracket (11) along the axial direction of the guide rod seat (1222), and the elastic member (1221) is in a deformed state of contraction or stretching to transmit the pressing force perpendicular to the mesh fabric (6) to the gripper (121); When the gripper (121) leaves the material tray (4), the elastic member (1221) drives the guide rod (1223) to move downward relative to the installation bracket (11) along the axial direction of the guide rod seat (1222) to return.

3. The mesh fabric grabbing device according to claim 2, characterized in that The bottom end of the guide rod (1223) is fixedly connected to the gripper (121) through a connecting plate (1224); The bottom end of the elastic member (1221) abuts against the top end of the connecting plate (1224), and the top end abuts against the bottom end of the guide rod seat (1222); The bottom end of the guide rod (1223) is inserted into a groove formed in the connecting plate (1224), and a first anti-rotation plane (12231) formed on the peripheral wall of the bottom end of the guide rod (1223) abuts against an anti-rotation plane formed on the inner peripheral wall of the groove; A second anti-rotation plane (12232) formed on the peripheral wall of the top end of the guide rod (1223) abuts against a third anti-rotation plane (12221) formed on the inner peripheral wall of the guide rod seat (1222).

4. The mesh fabric gripping device according to claim 3, wherein The inner peripheral wall of the upper part of the guide rod seat (1222) extends radially inwards to form a stepped portion, and the side wall of the stepped portion forms the third anti-rotation plane (12221); A first oil-free bushing (1225) is arranged between the inner peripheral wall of the lower part of the guide rod seat (1222) and the outer periphery of the top end of the guide rod (1223), and the top end of the elastic member (1221) abuts against the first oil-free bushing (1225); The top end of the guide rod (1223) is connected to a gasket (1227) that extends out of the guide rod seat (1222) to define the downward movement position of the guide rod (1223).

5. The mesh fabric gripping device according to claim 1, wherein A plurality of the mesh fabric gripper mechanisms (12) are provided, and the plurality of mesh fabric gripper mechanisms (12) are arranged on the mounting bracket (11) in a transverse and longitudinal staggered manner, and the plurality of mesh fabric gripper mechanisms (12) can at least grip the circumference of the mesh fabric (6).

6. The mesh cloth grabbing device according to claim 1, characterized in that, The gripper (121) is a needle holder, and the needle holder includes a needle holder body (1211), a needle group (1212) and a needle group driver; The needle group driver is arranged on the needle holder body (1211), and the needle group (1212) is arranged at the bottom end of the needle holder body (1211) so as to be able to extend and retract relative to the needle holder body (1211); the needle group (1212) includes a plurality of needle bodies arranged in parallel; the needle group driver is used to drive the needle group (1212) to be in an extended state and a retracted state; After the elastic member (1221) deforms and supports the needle holder body (1211) to vertically press against the mesh fabric, the needle group (1212) is in an extended state, and the needle bodies can correspondingly penetrate into the meshes of the mesh fabric (6); when the needle group (1212) is in a retracted state, the needle bodies can disengage to release the mesh fabric (6); after the needle holder body (1211) disengages from the mesh fabric (6), the elastic member (1221) drives the gripper (121) to move downward and return relative to the mounting bracket (11); The mesh fabric pushing mechanism (13) includes a driving seat (133), a driving member (132) and a push plate (131); The driving seat (133) is fixedly connected to the mounting bracket (11). The main body of the driving member (132) is fixed on the driving seat (133). The driving end of the driving member (132) is fixedly connected to the push plate (131). The driving member (132) is used to drive the push plate (131) to move up and down relative to the mounting bracket (11). The push plate (131) can push out the mesh cloth (6) on the gripper (121). The abutting end of the push plate (131) is provided with a positioning groove that can be inserted into a positioning member in the injection molding machine, and a second oil-free bushing (134) is arranged in the positioning groove.

7. The mesh fabric grasping device according to claim 1, characterized in that, A first profile guide rail (111) is arranged on the mounting bracket (11). The mesh cloth gripper mechanism (12) further includes a top plate (1226). The gripper (121) is connected to the top plate (1226) in a manner that can move up and down relative to the top plate (1226). Screws are sequentially passed through the first long hole (12261) opened on the top plate (1226) and the slot of the first profile guide rail (111) to fix the top plate (1226) on the first profile guide rail (111). Screws are sequentially passed through the second long hole (1331) opened on the mesh cloth pushing mechanism (13) and the slot of the first profile guide rail (111) to fix the mesh cloth pushing mechanism (13) on the first profile guide rail (111).

8. An injection molding system, characterized in that, It includes the mesh cloth gripping device (1) according to any one of claims 1-7, and further includes a support frame (3) and an injection molded part gripping device (2). The mesh cloth gripping device (1) and the injection molded part gripping device (2) are both arranged on the support frame (3). The injection molded part gripping device (2) includes a single-finger air clamping mechanism (21) that can clamp the injection molded part (5) and / or a vacuum suction cup mechanism (22) that can adsorb on the outer surface of the injection molded part (5). The mesh cloth gripping device (1) further includes a monitor (141). The monitor (141) is arranged on the mounting bracket (11), the mesh cloth gripper mechanism (12) or the mesh cloth pushing mechanism (13). The monitor (141) is used to monitor the distance between it and the topmost mesh cloth (6) on the material tray (4). The monitor (141) is also used to monitor the distance between it and the mesh cloth (6) grabbed by the gripper (121); or, The monitor (141) is also used to monitor the number of meshes of the mesh cloth (6) on the gripper (121) within the monitoring area.

9. The injection molding system according to claim 8, wherein The single-finger air clamping mechanism (21) includes a first connecting rod (211), a second connecting rod (212), a first fixing frame (213) and a second fixing frame (214). A long through-hole is formed in the first fixing bracket (213) for inserting a screw to be fixed on the support bracket (3); the first end of the first connecting rod (211) is inserted into the first fixing bracket (213) rotatably relative to the first fixing bracket (213), and the second end of the first connecting rod (211) is inserted into the second fixing bracket (214) rotatably relative to the second fixing bracket (214); The first end of the second connecting rod (212) is inserted into the second fixing bracket (214) rotatably relative to the second fixing bracket (214); the second end of the second connecting rod (212) is sleeved with a first clamping member (215) capable of axially moving relative to the second connecting rod (212), and the second end of the second connecting rod (212) is rotatably connected to a second clamping member (216), and the second clamping member (216) can rotate in a direction close to or away from the first clamping member (215); The vacuum chuck mechanism (22) includes a third connecting rod (222), a third fixing bracket (221), a fixing rod (223) and a vacuum chuck body (224); The third fixing bracket (221) is fixedly connected to the support bracket (3); the first end of the third connecting rod (222) is inserted into the third fixing bracket (221) rotatably relative to the third fixing bracket (221) and can move up and down relative to the third fixing bracket (221); the second end of the third connecting rod (222) is hinged to the fixing rod (223), the fixing rod (223) is connected to the vacuum chuck body (224) in a communicating manner, and the inner cavity of the fixing rod (223) can form a negative pressure chamber for the vacuum chuck body (224).

10. A grasping method for an injection molding system as described in claim 8 or 9, characterized in that, The method includes the following steps: S1: The distance between the monitor (141) and the gripper (121) is set to a first distance a; After the support bracket (3) drives the mesh cloth gripper mechanism (12) to move above the material tray (4), the monitor (141) monitors the second distance b between it and the uppermost mesh cloth (6) on the material tray (4); S2: After the support bracket (3) drives the mesh cloth gripper mechanism (12) to continue to move down by the difference between the first distance a and the second distance b, the gripper (121) abuts against the uppermost mesh cloth (6) on the material tray (4); S3: When the support bracket (3) drives the mesh cloth gripper mechanism (12) to continue to move down by a first distance c, the gripper (121) moves up by the first distance c relative to the mounting bracket (11) and the elastic member (1221) deforms to support the gripper (121) to vertically press against the mesh cloth; S4: After the gripper (121) pierces into the grid of the mesh cloth (6) to grab the uppermost mesh cloth (6), the support bracket (3) drives the mesh cloth gripper mechanism (12) to move up by a second distance d, and the elastic member (1221) drives the gripper (121) to move down and return relative to the mounting bracket (11); S5: The monitor (141) monitors whether the distance between it and the mesh cloth (6) grasped by the gripper (121) is greater than |b - d + c|; if so, it is determined that the gripper (121) does not grasp the mesh cloth (6), and the injection molding system stops; if not, it is determined that the gripper (121) grasps the mesh cloth (6), and proceed to S6; or, The number of meshes of the mesh cloth (6) within the monitoring area e is f, and the monitor (141) monitors whether the number of meshes of the mesh cloth (6) grasped by the gripper (121) within the monitoring area e is less than f; if so, it is determined that the gripper (121) does not grasp the mesh cloth (6), and the injection molding system stops; if not, proceed to S6; S6: The support frame (3) drives the entire injection molding system to move to the injection molding machine. After the vacuum suction cup mechanism (22) and / or the single-finger air clamping mechanism (21) adsorbs or clamps the molded injection molded part (5) in the injection molding machine, the support frame (3) moves the injection molded part (5) on the vacuum suction cup mechanism (22) and / or the single-finger air clamping mechanism (21) out of the injection molding machine and moves it to the workpiece table, and the vacuum suction cup mechanism (22) and / or the single-finger air clamping mechanism (21) unloads the injection molded part (5) onto the workpiece table; S7: The support frame (3) drives the mesh cloth gripper mechanism (12) to correspond to the positioning member in the injection molding machine. While the gripper (121) disengages to release the mesh cloth (6), the mesh cloth pushing mechanism (13) pushes the mesh cloth (6) into the injection molding machine and inserts it onto the positioning member in the injection molding machine, and the injection molding machine inlays the mesh cloth (6) onto the plastic part; S8: The support frame (3) drives the entire injection molding system to move to the workpiece table, and the vacuum suction cup mechanism (22) and / or the single-finger air clamping mechanism (21) unloads the injection molded part (5) onto the workpiece table. S9: Sequentially loop through steps S1 - S8.

Images