CN219748041U

CN219748041U - Clamping jaw structure

Info

Publication number: CN219748041U
Application number: CN202321140280.7U
Authority: CN
Inventors: 张志伟; 高益; 林康康; 皇甫青海
Original assignee: Shangqiu Jinzhenyuan Electronic Technology Co Ltd
Current assignee: Shangqiu Jinzhenyuan Electronic Technology Co Ltd
Priority date: 2023-05-12
Filing date: 2023-05-12
Publication date: 2023-09-26
Anticipated expiration: 2033-05-12

Abstract

The utility model belongs to the technical field of mechanical clamping, and particularly relates to a clamping jaw structure. The clamping jaw structure comprises a connecting plate, wherein a sliding assembly is arranged on the lower end face of the connecting plate, clamping jaw air cylinders are respectively and fixedly connected to two sliding parts of the sliding assembly, the two clamping jaw air cylinders are oppositely arranged, and two oppositely arranged clamping jaws are vertically and fixedly connected to air claws of the clamping jaw air cylinders; the connecting plate is fixedly connected with a variable-pitch assembly for enabling the two clamping jaw cylinders to move away from each other and towards each other. The utility model can adapt to floating displacement before and after product grabbing and can simultaneously feed and discharge a plurality of products.

Description

Clamping jaw structure

Technical Field

The utility model belongs to the technical field of mechanical clamping, and particularly relates to a clamping jaw structure.

Background

The strip-shaped product 1 shown in fig. 1 is provided with relevant protruding structures and various slots in the transverse direction. In the finish machining process after rough machining of the product 1, the product is required to be placed on the positioning jig manually, and the product 1 is taken out manually after machining is finished, so that the fatigue degree of manual operation is high and the efficiency is low in the process.

In order to solve the problems of high fatigue and low efficiency of manual clamping, mechanisms using robot clamping jaws exist in the prior art, namely, a connecting rod mechanism or a clamping cylinder mechanism is used for clamping a product 1 and then is placed on a positioning jig, and the product is taken down by the robot clamping jaws after being processed. However, the following technical problems exist in the clamping process of the product 1: because the transverse structure of the long product 1 is complex, when the product 1 is placed on the positioning jig, the positioning precision along the length direction of the product 1 is high, therefore, the product 1 cannot be directly placed in the positioning groove of the positioning jig, but needs to be placed outside the positioning groove of the positioning jig, then the product 1 is pushed into the positioning groove of the positioning jig by the side pushing cylinder to finish positioning, and after the processing is finished, the product 1 is taken out from the positioning groove of the positioning jig by the mechanical clamping jaw.

Therefore, when the mechanical clamping jaw is used for discharging and taking materials on the positioning jig, the mechanical clamping jaw is not positioned at the same position, so that the mechanical clamping jaw needs to set three horizontal movement positioning strokes (namely clamping the product 1 from a storage bin, feeding the product from the upper part outside a positioning groove of the positioning jig, and discharging the product from the upper part of the positioning groove of the positioning jig), and the mechanical clamping jaw has the advantages of complex structure and higher cost for realizing the functions, such as a gear-rack transmission or multi-stroke cylinder controlled by a servo motor. In the existing production process, batch clamping and batch feeding processes are used, and loading and unloading of four products 1 are performed synchronously, in this process, a more complex mechanical clamping jaw movement mechanism is required, so that the whole mechanical clamping jaw is complex in structure, cost is increased, and loading and unloading efficiency is limited. Based on this, there is a need to design a simple structure of clamping jaw suitable for automatic feeding and discharging of a plurality of products 1.

Disclosure of Invention

In order to solve the technical problems in the prior art, the utility model provides a clamping jaw structure which is suitable for floating and pitch-changing before and after product grabbing and can simultaneously load and unload a plurality of products.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the clamping jaw structure comprises a connecting plate, wherein a sliding assembly is arranged on the lower end face of the connecting plate, clamping jaw air cylinders are respectively and fixedly connected to two sliding parts of the sliding assembly, the two clamping jaw air cylinders are oppositely arranged, and two oppositely arranged clamping jaws are vertically and fixedly connected to air claws of the clamping jaw air cylinders; the connecting plate is fixedly connected with a variable-pitch assembly for enabling the two clamping jaw cylinders to move away from each other and towards each other.

Preferably, the distance changing assembly comprises a distance changing cylinder fixedly connected to the lower end surface of the connecting plate, a push plate arranged on a guide rod of the distance changing cylinder, a distance changing block arranged on the end surface of the push plate opposite to the clamping jaw cylinders, and elastic assemblies respectively arranged on the two clamping jaw cylinders and used for enabling the two clamping jaw cylinders to be close to each other, wherein the distance changing block is perpendicular to the push plate; the variable-pitch block penetrates through a gap between the two clamping jaw cylinders and is in butt joint with the two clamping jaw cylinders, and the variable-pitch block is of a wedge-shaped structure and is close to the thickness of the variable-pitch block on one side of the push plate and gradually increases.

Preferably, the elastic component is a spring in a compressed state, limiting blocks are fixedly connected to the lower end faces of connecting plates at the outer sides of the two clamping jaw cylinders, and two ends of the spring are respectively connected to the end faces of the limiting blocks, which are opposite to the clamping jaw cylinders.

Preferably, the elastic component is a tension spring in a stretching state, and two opposite end surfaces of the clamping jaw cylinders are respectively connected with two ends of the tension spring.

Preferably, the sliding assembly comprises a sliding rail fixedly connected to the lower end face of the connecting plate, two sliding blocks in sliding connection with the sliding rail, and two clamping jaw cylinders are respectively and fixedly connected to the two sliding blocks.

Preferably, two groups of sliding components, clamping jaw cylinders, clamping jaws and distance changing components which are arranged oppositely are arranged on the connecting plate.

Compared with the prior art, the utility model has the beneficial effects that:

according to the utility model, the sliding assembly, the clamping jaw air cylinders, the clamping jaws and the variable-pitch assembly are arranged, and the floating variable-pitch during feeding and discharging of products is adapted by changing the distance between the clamping jaw air cylinders; each group of clamping jaw is provided with two opposite clamping jaw cylinders, so that two products can be fed and discharged at one time; further, by arranging two groups of sliding assemblies, clamping jaw cylinders, clamping jaws and variable-pitch assemblies which are oppositely arranged, four products can be fed and discharged at a time, so that the overall feeding and discharging and processing efficiency is improved; the distance-changing cylinder, the push plate, the elastic component and the distance-changing block with the wedge-shaped structure are arranged, so that one distance-changing cylinder is used for changing the distance of the two clamping jaw cylinders, the integral distance-changing structure is simplified, and the structural complexity and the equipment cost are reduced; by adopting the clamping jaw structure, compared with the manual operation, the clamping jaw structure has the advantages of short time, saving of manual clamping, positioning and material taking operations, and remarkable effect improvement in the aspects of productivity, yield, personnel operation environment and the like.

Drawings

Fig. 1 is a schematic structural view of a long strip product grasped by the present utility model.

Fig. 2 is a schematic view of the structure of the embodiment 1 of the present utility model when gripping a long strip product.

Fig. 3 is a schematic overall structure of embodiment 1 of the present utility model.

Fig. 4 is a schematic elevational view of the structure of fig. 3.

Fig. 5 is a schematic view of the bottom structure of fig. 3.

Fig. 6 is a schematic view of the configuration of the pitch assembly, jaw cylinder, jaw and slide assembly of fig. 4.

Fig. 7 is a schematic view of the displacement assembly, jaw cylinder, jaw and slide assembly of fig. 5.

Fig. 8 is a schematic diagram of a connection structure of a pitch cylinder, a push plate and a pitch block according to an embodiment of the present utility model.

Fig. 9 is an exploded view of the sliding assembly, spring, stopper and jaw cylinder according to embodiment 1 of the present utility model.

In the figure: 1. the device comprises a product, 2, a connecting plate, 3, a sliding component, 31, a sliding rail, 32, a sliding block, 33, a connecting frame, 4, a clamping jaw cylinder, 41, clamping jaws, 5, a distance changing component, 51, a fixed plate, 52, a distance changing cylinder, 53, a push plate, 54, a distance changing block, 55, an elastic component, 6 and a limiting block.

Description of the embodiments

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. It is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments, and that all other embodiments obtained by persons of ordinary skill in the art without making creative efforts based on the embodiments in the present utility model are within the protection scope of the present utility model.

In the description of the present utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Examples

Referring to fig. 2, 3, 4 and 5, a clamping jaw structure comprises a connecting plate 2, wherein an inward groove is formed in the middle of the connecting plate 2 so as to facilitate installation of various components and reduce the overall weight of the connecting plate 2.

The lower end surfaces of two sides of the connecting plate 2 are provided with sliding components 3 along the width direction of the connecting plate 2, two sliding parts of the sliding components 3 are respectively and fixedly connected with clamping jaw air cylinders 4 which are oppositely arranged, and the sliding components 3 have the effect of enabling the two clamping jaw air cylinders 4 to move away from or towards each other along the length direction of the sliding components 3, so that the sliding components 3 can have various structural forms, such as guide rod and guide sleeve structures, or sliding rail and sliding block structures in the embodiment. In this embodiment, the sliding assembly 3 includes a sliding rail 31 fixedly connected to two sides of the connecting plate 2 by bolts, two sliding blocks 32 slidably connected to each sliding rail 31, a connecting frame 33 fixedly connected to each sliding block 32 by bolts, and a clamping jaw cylinder 4 vertically and downwardly arranged on each connecting frame 33 by bolts.

The gas claw of each clamping claw cylinder 4 is fixedly connected with two clamping claws 41 which are vertically arranged in a bolt way, and the clamping claws 41 are of flat plate type structures and are arranged along the length direction of the connecting plate 2. The clamping jaw cylinder 4 can drive the air jaw and the clamping jaw 41 to grab the product 1, the clamping jaw cylinder 4 can be selected from SMC air jaw cylinders MHZJ2-16D, the structure and the working principle are the prior art, and the description is omitted here.

In order to adapt to the distance change between the two clamping jaw cylinders 4 when the clamping jaw cylinders 4 feed and discharge from the positioning jig, a distance changing assembly 5 for moving the two clamping jaw cylinders 4 back to back and moving back to back is fixedly connected to the connecting plate 2. The distance changing assembly 5 is provided with two groups for respectively changing the distance of the clamping jaw cylinders 4 at two sides of the connecting plate 2. The variable-pitch assembly 5 can have various structural forms, such as a screw transmission mode that two clamping jaw air cylinders 4 are arranged on a screw, but the structure needs to be additionally provided with a motor for driving the screw to rotate, the structural form is complex, and the cost is high; two air cylinders can be arranged on each side of the connecting plate 2, guide rods of the two air cylinders are respectively connected with the two clamping jaw air cylinders 4, and the distance change of the two clamping jaw air cylinders 4 is realized through the extension and contraction of the guide rods of the air cylinders, but the number of the air cylinders arranged in the structural form is large, the air paths are large, and the whole arrangement is inconvenient. For this purpose, in the present embodiment, the pitch assembly 5 implements the pitch change of the two jaw cylinders 4 by means of a wedge mechanism.

Referring to fig. 6, 7 and 8, each set of distance varying components 5 comprises a fixed plate 51 fixedly connected to the lower end surface of the connecting plate 2 by bolts, a distance varying cylinder 52 fixedly connected to the fixed plate 51 by bolts and horizontally facing the clamping jaw cylinder 4, a push plate 53 fixedly connected to a guide rod of the distance varying cylinder 52 by bolts, a distance varying block 54 fixedly connected to the end surface of the push plate 53 opposite to the clamping jaw cylinder 4, and elastic components 55 respectively arranged on the two clamping jaw cylinders 4 and used for enabling the two clamping jaw cylinders 4 to approach each other, wherein the distance varying block 54 is perpendicular to the push plate 53, the distance varying block 54 is arranged in a gap between the two clamping jaw cylinders 4 in a penetrating manner and is abutted against the two clamping jaw cylinders 4, and the distance varying block 54 is of a wedge-shaped structure and the thickness of the distance varying block 54 close to one side of the push plate 53 is gradually increased. Therefore, with the above structure, when the guide rod of the variable-pitch cylinder 52 extends, the variable-pitch block 54 is driven to move forward, and during the movement, the end surfaces of the variable-pitch block 54, which are abutted against the two clamping jaw cylinders 4, become thicker gradually, so that the two variable-pitch cylinders 53 are moved away from each other along the slide rail 31, and the distance between the two clamping jaw cylinders 4 is increased; when the guide rod of the variable-pitch cylinder 52 is retracted and drives the variable-pitch block 54 to gradually retract between the two clamping jaw cylinders 4, the two clamping jaw cylinders 4 are restored to the original positions under the action of the elastic component 55.

Referring to fig. 9, in this embodiment, the elastic component 55 may be a spring, where a stopper 6 is fixedly connected to the lower end surface of the connecting plate 2 outside the two clamping jaw cylinders 4 on each side of the connecting plate 2 by bolts, and two ends of the spring are respectively and fixedly connected to opposite end surfaces between the stopper 6 and the slider 32, where the spring is in a compressed state. By providing the springs, when the guide rods of the pitch changing cylinders 52 retract, the two pitch changing cylinders 52 automatically return to the original positions under the action of the spring force.

Examples

The present embodiment provides another structural form of the elastic assembly of the jaw structure, in which the same or corresponding parts as those of embodiment 1 are denoted by the same reference numerals as those of embodiment 1, and this embodiment only illustrates the differences from embodiment 1 for the sake of simplicity.

In this embodiment, the elastic component 55 is a tension spring, and two ends of the tension spring are respectively and fixedly connected to opposite end surfaces of the two clamping jaw cylinders 4. When the guide rod of the variable-pitch cylinder 52 does not extend, the front end of the variable-pitch block 54 is penetrated in the gap between the two clamping jaw cylinders 4 and is abutted against the two clamping jaw cylinders 4; when the guide rod of the variable-pitch cylinder 52 extends and drives the variable-pitch block 54 to move forwards, the tension spring is in a stretched state, and when the guide rod of the variable-pitch cylinder 52 retracts, the two clamping jaw cylinders 4 are restored to the original positions under the tension of the tension spring.

In addition, in order to improve whole clamping jaw structure and to the last unloading efficiency of product 1, but at connecting plate 2 up end installation rotating assembly, rotating assembly installs on the arm, and when rotating assembly rotated 90 degrees, clamping jaw 41 rotatable to the feed bin top in order to get the material, and when rotating assembly rotated 90 degrees again, clamping jaw 41 rotatable to the positioning jig constant head tank outside top in order to go up the material.

The working procedures of the embodiments 1 and 2 of the utility model are as follows:

1. according to the structural description of the embodiment, as shown in fig. 2, at this time, the guide rod of the variable-pitch cylinder 52 extends to drive the push plate 53 and the variable-pitch block 54 to move forward, so that the two clamping jaw cylinders 4 move away from each other to the set position;

2. the clamping jaw cylinder 2 drives the clamping jaw 41 to grasp the product 1 and then stay above the outer side of the positioning groove of the positioning jig, the mechanical arm drives the clamping jaw structure to move downwards to place the product 1 outside the positioning groove of the positioning jig, the product is pushed into the positioning groove of the positioning jig by the side pushing cylinder to finish positioning, and the mechanical arm drives the clamping jaw structure to move upwards to an initial position;

3. when the product 1 is required to be taken out from the positioning jig after being processed, the guide rod of the variable-pitch cylinder 3 retracts to drive the push plate 53 and the variable-pitch block 54 to retreat, so that the two clamping jaw cylinders 4 move to the set position in opposite directions under the action of the elastic component 55, the mechanical arm drives the clamping jaw structure to move downwards, the clamping jaw cylinder 2 drives the clamping jaw 41 to grab the processed product 1, and the mechanical arm drives the clamping jaw structure to move upwards and place the processed product 1 into a finished product bin. And (5) circularly repeating the feeding and discharging processes of the product 1.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a clamping jaw structure, includes connecting plate, its characterized in that: the lower end face of the connecting plate is provided with a sliding assembly, two sliding pieces of the sliding assembly are respectively and fixedly connected with clamping jaw air cylinders, the two clamping jaw air cylinders are oppositely arranged, and two oppositely arranged clamping jaws are vertically and fixedly connected with air claws of the clamping jaw air cylinders; the connecting plate is fixedly connected with a variable-pitch assembly for enabling the two clamping jaw cylinders to move away from each other and towards each other.

2. A jaw structure according to claim 1, characterized in that: the distance changing assembly comprises a distance changing air cylinder fixedly connected to the lower end surface of the connecting plate, a push plate arranged on a guide rod of the distance changing air cylinder, a distance changing block arranged on the end surface of the push plate opposite to the clamping jaw air cylinder, and elastic assemblies respectively arranged on the two clamping jaw air cylinders and used for enabling the two clamping jaw air cylinders to be close to each other, wherein the distance changing block is perpendicular to the push plate; the variable-pitch block penetrates through a gap between the two clamping jaw cylinders and is in butt joint with the two clamping jaw cylinders, and the variable-pitch block is of a wedge-shaped structure and is close to the thickness of the variable-pitch block on one side of the push plate and gradually increases.

3. A jaw structure according to claim 2, characterized in that: the elastic component is a spring in a compressed state, limiting blocks are fixedly connected to the lower end faces of connecting plates at the outer sides of the clamping jaw cylinders, and two ends of the spring are respectively connected to the end faces, opposite to the clamping jaw cylinders, of the limiting blocks.

4. A jaw structure according to claim 2, characterized in that: the elastic component is a tension spring in a stretching state, and two opposite end surfaces of the clamping jaw cylinders are respectively connected with two ends of the tension spring.

5. A jaw structure according to claim 1, characterized in that: the sliding assembly comprises a sliding rail fixedly connected to the lower end face of the connecting plate, two sliding blocks are slidably connected to the sliding rail, and two clamping jaw cylinders are respectively and fixedly connected to the two sliding blocks.

6. A jaw structure according to claim 1, characterized in that: two groups of sliding components, clamping jaw cylinders, clamping jaws and variable-pitch components which are oppositely arranged are arranged on the connecting plate.