A retractable gripper for grabbing cloth

Abstract

The application belongs to the technical field of sewing equipment, and provides a telescopic clamping jaw for grabbing cloth, which comprises a fixed block, a driving part fixed on the side wall of the fixed block, a grabbing assembly provided with a first adhesive jaw and a second adhesive jaw, a suction assembly arranged on the first adhesive jaw and the second adhesive jaw, a plurality of through holes arranged at the bottom end of the first adhesive jaw and the second adhesive jaw, and a pin assembly movably arranged in the first adhesive jaw and the second adhesive jaw, wherein the pin assembly is provided with a plurality of pins, the pins are inserted through the through holes and exposed outside the first adhesive jaw and the second adhesive jaw. Compared with the prior art, the telescopic clamping jaw has the advantages that the pins and the suction assembly arranged on the first adhesive jaw and the second adhesive jaw realize the function of grabbing cloth, and the automatic stretching of the cloth is realized by driving the first adhesive jaw and / or the second adhesive jaw through the driving part, so that the stretching efficiency of the cloth is higher.

Description

Technical Field

[0001] This invention belongs to the field of sewing equipment technology, specifically relating to a retractable gripper for gripping fabric. Background Technology

[0002] Fabric grippers are used in fabric transfer scenarios, utilizing the up-down and left-right movement of the gripper to transfer fabric from one piece to another. For example, the structure disclosed in the invention patent application number 202010291018.7, entitled "Fabric Gripping Assembly," includes: a base plate, a telescopic arm base, a telescopic arm assembly, a needle gripper mounting base fixedly disposed at the end of the telescopic arm assembly, and a needle gripper mechanism fixed on the needle gripper mounting base. This invention uses multiple telescopic arm assemblies disposed on the base plate to support the needle gripper mechanism. The needles extending from the needle gripper mechanism cooperate with the steel column on the tension spring opposite to the bending direction of the needles to allow the needles to pierce the fabric. Before the fabric is separated from the fabric stack, the needle gripper mechanism rotates to separate the fabric to be separated from the fabric stack. Then, the entire needle gripper mechanism is lifted onto the platform to separate the fabric. Finally, the needle gripper rotates back to its original position.

[0003] During the sewing process of two pieces of fabric, due to the elasticity of the fabric, the shorter piece of fabric will be stretched when the two pieces are spliced ​​together. However, the fabric gripping assembly mentioned above cannot perform the stretching operation of the fabric. Usually, the stretching is done manually. However, manual stretching of fabric often has the problems of high labor intensity, low work precision and low work efficiency. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a retractable gripper for grasping fabric, in light of the current state of the prior art.

[0005] The technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows: a retractable gripper for gripping fabric is proposed, comprising: a fixing block;

[0006] A driving component, which is fixed to the side wall of the fixed block;

[0007] The gripping component is provided with a first adhesive claw and a second adhesive claw. The first adhesive claw and the second adhesive claw are both connected to the lower end of the fixed block, and the driving component is used to drive the first adhesive claw and / or the second adhesive claw to move on the fixed block.

[0008] An adsorption component is disposed on the first adhesive claw and the second adhesive claw. The bottom end of the first adhesive claw and the second adhesive claw are provided with a plurality of through holes. The adsorption component is used to form a negative pressure in the first adhesive claw and the second adhesive claw and adsorb the fabric through the through holes.

[0009] A pin assembly is movably disposed within the first and second adhesive claws. The pin assembly is provided with a plurality of pins, which are inserted through the through hole and exposed on the outside of the first and second adhesive claws.

[0010] When the adsorption component creates negative pressure in the first and second adhesive claws and the gripping component adheres to the fabric, the pin is inserted into the fabric and together with the adsorption component, adsorbs the fabric onto the gripping component. The driving component can drive the first and / or second adhesive claws to move, thereby stretching the fabric.

[0011] In the aforementioned retractable gripper for grasping fabric, the driving component includes:

[0012] An electric motor, wherein the output end of the electric motor is provided with a lead screw, and the electric motor is used to drive the lead screw to rotate around its own axis;

[0013] A first threaded hole is provided in the first adhesion claw and / or the second adhesion claw, and the lead screw is inserted into the first threaded hole.

[0014] In the aforementioned retractable gripper for grasping fabric, the adsorption component includes:

[0015] Accommodating space provided inside the first adhesion claw and the second adhesion claw;

[0016] Mounting holes are provided on the sidewalls of the first and second adhesion claws, and the mounting holes are connected to the receiving space;

[0017] An air supply connector is attached to the mounting hole.

[0018] In the aforementioned retractable gripper for grasping fabric, the pin assembly is provided with a pin plate, which is movably disposed within the receiving space, and the pin is fixed on the pin plate.

[0019] In the aforementioned retractable gripper for grasping fabric, a spring is provided within the receiving space, with the upper end of the spring abutting against the bottom end of the insert plate.

[0020] In the above-mentioned retractable gripper for gripping fabric, the upper end of the fixing block is detachably connected to an installation block, and the installation block is coaxially provided with a bolt through hole and a second threaded hole, and an installation groove is provided between the bolt through hole and the second threaded hole.

[0021] Compared with the prior art, the advantages of the present invention are that by setting pins and adsorption components on the first and second adhesive claws, the retractable gripper of the present invention can grasp the fabric, and the automatic stretching of the fabric is achieved by driving the first and / or second adhesive claws through the driving component, thereby making the stretching efficiency of the fabric higher, the stretching accuracy of the fabric and the working efficiency higher. Attached Figure Description

[0022] Figure 1 This is a perspective view of a retractable gripper for grasping fabric according to the present invention.

[0023] Figure 2 This is a plan view of a retractable gripper for grasping fabric according to the present invention;

[0024] Figure 3 yes Figure 2 Sectional view along line AA.

[0025] In the diagram, 1. Fixing block; 2. First adhesion claw; 3. Second adhesion claw; 4. Through hole; 5. Pin; 6. Motor; 7. Lead screw; 8. Accommodation space; 9. Mounting hole; 10. Air source connector; 11. Pin plate; 12. Spring; 13. Mounting block; 14. Bolt through hole; 15. Mounting groove. Detailed Implementation

[0026] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0027] like Figures 1 to 3 As shown, a retractable gripper for gripping fabric according to the present invention includes: a fixed block 1; a driving member fixed to the side wall of the fixed block 1; a gripping assembly having a first adhesive claw 2 and a second adhesive claw 3, both the first adhesive claw 2 and the second adhesive claw 3 being connected to the lower end of the fixed block 1, and the driving member driving the first adhesive claw 2 and / or the second adhesive claw 3 to move on the fixed block 1; and an adsorption assembly disposed on the first adhesive claw 2 and the second adhesive claw 3, the bottom ends of the first adhesive claw 2 and the second adhesive claw 3 each having a plurality of through holes 4, the adsorption assembly being used to grip the first adhesive claw 2... A negative pressure is formed within the first and second adhesive claws 3, and the fabric is adsorbed through the through hole 4. A pin assembly is movably disposed within the first and second adhesive claws 2 and 3. The pin assembly is provided with a plurality of pins 5, which are inserted through the through hole 4 and exposed on the outside of the first and second adhesive claws 2 and 3. When the adsorption assembly forms a negative pressure within the first and second adhesive claws 2 and 3 and the gripping assembly adheres to the fabric, the pins 5 are inserted into the fabric and together with the adsorption assembly, adsorb the fabric onto the gripping assembly. The driving component can drive the first adhesive claw 2 and / or the second adhesive claw 3 to move, thereby stretching the fabric.

[0028] Based on the above embodiments, the technical problem to be solved by this application is the high workload, low precision, and low efficiency of manually stretching fabric during sewing. To address this, this application provides a fixing block 1, a driving component on the side wall of the fixing block 1, and a first adhesive claw 2 at the lower end of the fixing block 1. The driving component can drive either the first adhesive claw 2 or the second adhesive claw 3, or one of the first adhesive claw 2 or the second adhesive claw 3, to move at the lower end of the fixing block 1. Furthermore, an adsorption component and a pin assembly for adsorbing fabric are provided on both the first adhesive claw 2 and the second adhesive claw 3. Specifically, the pin assembly is provided with a pin 5 that inserts into the fabric. A through hole 4 is provided at the lower end of the first adhesive claw 2 and the second adhesive claw 3. During operation, the first adhesive claw 2 and the second adhesive claw 3 are pressed tightly onto the fabric, and the adsorption component is connected to an air source to create a negative pressure inside the first adhesive claw 2 and the second adhesive claw 3. When the first adhesive claw 2 and the second adhesive claw 3 are pressed tightly onto the fabric... The pins 5 exposed on the outside of the first adhesive claw 2 and the second adhesive claw 3 can be inserted into the fabric. After the air source is turned on, the adsorption component forms a negative pressure at the lower ends of the first adhesive claw 2 and the second adhesive claw 3 and adsorbs the fabric at the lower ends of the first adhesive claw 2 and the second adhesive claw 3 together through the pins 5. After the fabric is adsorbed at the lower ends of the first adhesive claw 2 and the second adhesive claw 3, the driving component drives the first adhesive claw 2 and the second adhesive claw 3, or when one of the first adhesive claw 2 and the second adhesive claw 3 moves away from each other at the lower end of the fixed block 1, it can drive the fabric on the first adhesive claw 2 and the second adhesive claw 3 to perform a stretching operation. The entire stretching process of the fabric is completed by the first adhesive claw 2, the second adhesive claw 3 and the driving component. In this way, the problems of high labor intensity, low work progress and low work efficiency of manually stretching fabric are solved.

[0029] Furthermore, the driving component includes: a motor 6, the output end of which is provided with a lead screw 7, the motor 6 being used to drive the lead screw 7 to rotate around its own axis; a first threaded hole, which is provided in the first adhesion claw 2 and / or the second adhesion claw 3, and the lead screw 7 is inserted into the first threaded hole.

[0030] Based on the above technical solution, the technical problem to be solved by this application is how the driving component drives the first adhesion claw 2 and / or the second adhesion claw 3 to move. To this end, this application uses a motor 6, a lead screw 7, and a first threaded hole provided on the first adhesion claw 2 and / or the second adhesion claw 3 and threadedly connected to the lead screw 7 to form the driving component. During operation, the motor 6 drives the lead screw 7 to rotate around the axis of the lead screw 7, thereby driving the first adhesion claw 2 and / or the second adhesion claw 3 to move on the fixed block 1. This achieves the driving component driving the movement of the first adhesion claw 2 and / or the second adhesion claw 3.

[0031] Furthermore, the adsorption assembly includes: a receiving space 8 disposed inside the first adhesion claw 2 and the second adhesion claw 3; a mounting hole 9 disposed on the side wall of the first adhesion claw 2 and the second adhesion claw 3, the mounting hole 9 being connected to the receiving space 8; and an air source connector 10 connected to the mounting hole 9.

[0032] Based on the above embodiments, the technical problem to be solved by this application is how to form a negative pressure within the first adhesion claw 2 and the second adhesion claw 3. To this end, this application provides a receiving space 8 within the first adhesion claw 2 and the second adhesion claw 3, and provides mounting holes 9 on the side walls of the first adhesion claw 2 and the second adhesion claw 3 that communicate with the receiving space 8. An air source connector 10 is connected to the mounting hole 9. During operation, the air source connector 10 is connected to an air source, and air is drawn from the first adhesion claw 2 and the second adhesion claw 3 through the air source. In this way, a negative pressure can be formed within the first adhesion claw 2 and the second adhesion claw 3.

[0033] Furthermore, the pin assembly is provided with a pin plate 5, which is movably disposed within the receiving space 8, and the pin 5 is fixed on the pin plate 5.

[0034] Based on the above embodiments, the technical problem to be solved by this application is how to fix the pin 5 within the first adhesive claw 2 and the second adhesive claw 3. To this end, this application movably provides a pin 5 plate within the receiving space 8, and fixes the pin 5 to the pin 5 plate. In this way, the pin 5 can be fixed within the first adhesive claw 2 and the second adhesive claw 3.

[0035] Furthermore, a spring 12 is provided in the accommodating space 8, with the upper end of the spring 12 abutting against the bottom end of the insert plate 5.

[0036] Based on the above embodiments, the technical problem to be solved by this application is how to prevent the insert pin 5 from bending when the first adhesive claw 2 and the second adhesive claw 3 are pressed against the fabric. To this end, this application provides a spring 12 within the receiving space 8. The upper end of the spring 12 abuts against the bottom end of the insert pin 5 plate. Under normal conditions, the spring 12 is compressed under the weight of the insert pin 5 plate. During operation, when the length of the insert pin 5 extending beyond the first adhesive claw 2 and the second adhesive claw 3 is greater than the thickness of the fabric and it touches a hard object below the fabric, the insert pin 5 plate moves within the receiving space 8 under the reaction force of the hard object and the action of the spring 12. This causes the insert pin 5 to partially retract into the receiving space 8, and the distance by which the insert pin 5 remains outside the first adhesive claw 2 and the second adhesive claw 3 is exactly equal to the thickness of the fabric. Thus, bending of the insert pin 5 can be prevented.

[0037] Furthermore, the upper end of the fixing block 1 is detachably connected to the mounting block 13, and the mounting block 13 is coaxially provided with a bolt through hole 4 and a second threaded hole, and a mounting groove 15 is provided between the bolt through hole 4 and the second threaded hole.

[0038] Based on the above embodiments, the technical problem this application aims to solve is how to facilitate the fixing of the entire retractable gripper. To this end, this application connects a mounting block 13 to the upper end of the fixing block 1. The mounting block 13 has a bolt through hole 4 and a second threaded hole coaxially arranged on it. A mounting groove 15 is provided between the bolt through hole 4 and the second threaded hole. During installation, the fixing part of the retractable gripper can be inserted into the mounting groove 15, and finally, the bolt is passed through the bolt through hole 4 and connected to the threaded hole. This facilitates the fixing of the entire retractable gripper.

[0039] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0040] Furthermore, in this invention, descriptions involving terms such as "first," "second," and "a" are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0041] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0042] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are feasible for those skilled in the art. If the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

Claims

1. A retractable gripper for grasping fabric, characterized in that, include: Fixed block; A driving component, which is fixed to the side wall of the fixed block; The gripping component is provided with a first adhesive claw and a second adhesive claw. The first adhesive claw and the second adhesive claw are both connected to the lower end of the fixed block, and the driving component is used to drive the first adhesive claw and / or the second adhesive claw to move on the fixed block. An adsorption component is disposed on the first adhesive claw and the second adhesive claw. The bottom end of the first adhesive claw and the second adhesive claw are provided with a plurality of through holes. The adsorption component is used to form a negative pressure in the first adhesive claw and the second adhesive claw and adsorb the fabric through the through holes. A pin assembly is movably disposed within the first and second adhesive claws. The pin assembly is provided with a plurality of pins, which are inserted through the through hole and exposed on the outside of the first and second adhesive claws. When the adsorption component creates negative pressure in the first and second adhesive claws and the gripping component adheres to the fabric, the pin is inserted into the fabric and together with the adsorption component, adsorbs the fabric onto the gripping component. The driving component can drive the first and / or second adhesive claws to move, thereby stretching the fabric. The driving component includes: a motor, the output end of which is provided with a lead screw, the motor being used to drive the lead screw to rotate around its own axis; a first threaded hole, which is disposed in the first adhesion claw and / or the second adhesion claw, the lead screw being inserted into the first threaded hole; The adsorption assembly includes: a receiving space disposed inside the first adhesion claw and the second adhesion claw; a mounting hole disposed on the side wall of the first adhesion claw and the second adhesion claw, the mounting hole communicating with the receiving space; and an air source connector connected to the mounting hole.

2. The retractable gripper for grasping fabric according to claim 1, characterized in that, The pin assembly is provided with a pin plate, which is movably disposed within the receiving space, and the pin is fixed on the pin plate.

3. A retractable gripper for grasping fabric according to claim 2, characterized in that, A spring is provided within the accommodating space, with the upper end of the spring abutting against the bottom end of the pin plate.

4. A retractable gripper for grasping fabric according to claim 2, characterized in that, The upper end of the fixing block is detachably connected to an installation block. The installation block is coaxially provided with a bolt through hole and a second threaded hole, and an installation groove is provided between the bolt through hole and the second threaded hole.

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