Automatic processing and positioning clamp for plastic cover

Abstract

The utility model discloses a kind of automatic processing positioning clamps of plastic cover, belong to the technical field of automated fixture, the fixture includes support frame, double-rod cylinder, sliding assembly and clamping assembly. Its sliding assembly is additionally added telescopic shaft, and with the fixed plate of same support frame common reference sliding fit, provide accurate orientation for clamping movement;The clamping piece of its clamping assembly is detachably mounted on fixed seat by a set of locking mechanism consisting of rotating rod, fixed shaft and threaded silk. The utility model adds accurate orientation mechanism, solves the problem of instability in prior art, positioning accuracy is not high;At the same time, the unique quick replacement structure makes that clamping piece does not need tool to be replaced, convenient operation greatly improves production efficiency and production line flexibility.

Description

Technical Field

[0001] This utility model relates to the field of automated fixture technology, and in particular to an automatic processing and positioning fixture for plastic caps. Background Technology

[0002] In automated production lines for products such as plastic bottles and caps, positioning fixtures are indispensable key equipment for achieving automated capping and labeling processes. Their main function is to quickly and stably clamp and fix the workpiece when it is transported to the designated station, providing a precise positional reference for subsequent processing steps.

[0003] Currently, most of these positioning fixtures use cylinders as the power source, driving two clamping components to move towards or away from each other to clamp and release the workpiece. This structure is simple and has a fast response speed, making it widely used in automated production.

[0004] However, in practical applications, it has been found that relying solely on the piston rod of the cylinder to directly drive the clamping component results in insufficient guiding stability. During high-speed, high-frequency clamping and releasing processes, the lack of an additional precision guiding mechanism for constraint makes the clamping component prone to slight deflection or wobbling at the end of the movement or when subjected to uneven force. This unstable clamping state directly affects the repeatability of positioning, potentially leading to defective products in subsequent capping processes and reducing the overall product yield.

[0005] Therefore, this utility model proposes an automatic processing and positioning fixture for plastic caps to overcome the shortcomings of the prior art. Utility Model Content

[0006] To overcome the above shortcomings, this utility model provides an automatic plastic cap processing and positioning fixture, which aims to improve the problems of relying solely on cylinders to push the clamping parts, lacking a stable guiding structure, resulting in easy shaking and deflection during clamping movement and low positioning accuracy. This utility model aims to provide an improved plastic cap automatic processing and positioning fixture that can effectively solve the above problems.

[0007] To achieve the above objectives, this utility model provides the following technical solution: an automatic processing and positioning fixture for plastic caps, comprising: a support frame, a double-rod cylinder fixedly connected to the support frame, a sliding assembly driven by the double-rod cylinder, and a clamping assembly mounted on the sliding assembly; wherein, the sliding assembly includes a telescopic plate connected to the output end of the double-rod cylinder; the clamping assembly includes a fixed seat fixed to the telescopic plate, and a clamping member detachably mounted on the fixed seat; The fixture also includes a fixed plate, a first bolt, a telescopic shaft, a fixed shaft, a rotating rod, a rotating ring, a threaded wire, and a U-shaped plate.

[0008] The fixed plate is fixed to the same mounting reference as the support frame by the first bolt. One end of the telescopic shaft is fixedly connected to the telescopic plate, and the other end of the telescopic shaft is slidably connected to the fixed plate, thereby forming a precise guiding mechanism. The fixed shaft is fixedly connected to both ends of the fixed base. One end of the rotating rod is rotatably connected to the fixed shaft through the rotating ring. The two ends of the clamping member are fixed with the U-shaped plate. The U-shaped plate has a snap-fit ​​groove. The other end of the rotating rod is adapted to snap-fit ​​the snap-fit ​​groove. The other end of the rotating rod is threaded with the threaded wire. The threaded wire is used to tighten to press against the U-shaped plate, thereby forming a quick-change mechanism.

[0009] Preferably, the clamp includes two sliding components respectively connected to the two output ends of the double-rod cylinder, and two clamping components respectively mounted on the two telescopic plates.

[0010] Preferably, the telescopic shaft is fixed to the end of the telescopic plate away from the clamping assembly.

[0011] Preferably, the axis of the output end of the dual-rod cylinder is parallel to the axis of the telescopic shaft.

[0012] Preferably, the fixing base has a mounting groove for placing the clamping member.

[0013] Preferably, the fixing plate has a guide groove for sliding engagement of the telescopic shaft.

[0014] Preferably, one end of the rotating rod is fixedly connected to the rotating ring, and the rotating ring is sleeved on the outer circumference of the fixed shaft.

[0015] Preferably, the fixing plate has a through hole for the first bolt to pass through.

[0016] This utility model has the following beneficial effects: 1. This utility model solves the problem in the prior art that when changing fixtures to adapt to different workpieces, tools are needed for disassembly and assembly, which is cumbersome and time-consuming. It achieves the technical effect of quick disassembly and assembly of clamping parts without tools, which is convenient and significantly improves the production line changeover efficiency.

[0017] 2. This utility model solves the problem in the prior art that some clamps rely solely on cylinders for propulsion, lack precise guidance, and are prone to shaking or deflection during clamping, resulting in low positioning accuracy. By adding a telescopic shaft that is linked to the telescopic plate and a fixed plate that slides with the telescopic shaft, it achieves the technical effect of ensuring that the clamping mechanism always maintains a stable linear trajectory during reciprocating motion, effectively improving the stability and repeatability of clamping positioning. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of an automatic processing and positioning fixture for plastic caps proposed in this utility model; Figure 2 This is a schematic diagram of the clamping component of an automatic plastic cap processing positioning fixture proposed in this utility model; Figure 3 This is a schematic diagram of the fixing plate part of an automatic processing positioning fixture for plastic caps proposed in this utility model; Figure 4 for Figure 1 Enlarged view of point A in the image.

[0019] Legend: 1. Support frame; 2. Double-rod cylinder; 3. Sliding assembly; 301. Telescopic plate; 302. Telescopic shaft; 303. Fixed plate; 4. Clamping assembly; 401. Fixed seat; 402. Clamping component; 403. U-shaped plate; 404. Rotating rod; 405. Threaded wire; 406. Rotating ring; 407. Fixed shaft; 5. First bolt. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please refer to Figures 1 to 4 This utility model provides an automatic processing and positioning fixture for plastic caps, which aims to solve the problems of cumbersome operation and low positioning accuracy when changing workpiece accessories in existing automated fixtures.

[0022] like Figure 1As shown, the automatic processing and positioning fixture for plastic caps includes a support frame 1, which serves as the mounting base for the entire fixture and is fixed to the side frame of the production line conveyor belt. A double-rod cylinder 2 is fixedly connected to the lower surface of the support frame 1 and serves as the power source for the entire fixture, driving the subsequent clamping mechanism to perform reciprocating linear motion. The fixture also includes two sliding components 3 and two clamping components 4. The two sliding components 3 are respectively connected to the two output ends of the double-rod cylinder 2. Specifically, the sliding component 3 includes a telescopic plate 301, and the two output ends of the double-rod cylinder 2 are respectively threaded to the corresponding telescopic plate 301. The clamping component 4 includes a fixed seat 401 and a clamping member 402. The fixed seat 401 is fixedly connected to the top surface of the telescopic plate 301, and the clamping member 402 is detachably mounted on the fixed seat 401 for directly clamping the plastic bottle. When the double-rod cylinder 2 is activated, it can drive the two telescopic plates 301 to move synchronously towards or away from each other, thereby realizing the clamping and release of the workpiece.

[0023] The fixed plate 303 is provided with a guide groove. The fixed plate 303 is fixed to the same mounting reference as the support frame 1 by the first bolt 5. For example, it is simultaneously fixed to the side frame of the production line conveyor belt and maintains a precise relative positional relationship with the support frame 1. The function of the fixed plate 303 is to provide a fixed guide reference for the reciprocating motion of the sliding component 3. Meanwhile, the sliding assembly 3 also includes a telescopic shaft 302. One end of the telescopic shaft 302 is fixedly connected to the end of the telescopic plate 301 away from the clamping assembly 4, and the other end of the telescopic shaft 302 extends into the guide groove of the fixed plate 303 and slides therewith. In the assembled state, when the double-rod cylinder 2 drives the telescopic plate 301 to move, the telescopic shaft 302 will make a smooth linear movement under the constraint of the guide groove of the fixed plate 303. This guiding mechanism composed of the telescopic shaft 302 and the fixed plate 303 ensures that the telescopic plate 301 and the clamping assembly 4 installed on the telescopic plate 301 maintain a high level of stability in horizontal movement throughout the entire clamping and releasing process, effectively avoiding deflection or shaking during the movement, thereby greatly improving the repeatability accuracy of clamping and positioning.

[0024] In a preferred embodiment, to achieve rapid workpiece replacement, the clamping assembly 4 employs a unique locking and releasing structure. The clamping assembly 4 also includes a fixed shaft 407, a rotating rod 404, a rotating ring 406, and a threaded wire 405. The fixed shaft 407 is fixedly connected to both ends of the fixed base 401, serving as a stable fulcrum for the rotating mechanism. One end of the rotating rod 404 is rotatably connected to the fixed shaft 407 via the rotating ring 406. Specifically, the rotating ring 406 is sleeved on the outer wall of the fixed shaft 407 and is connected to one end of the rotating rod 404. The two ends of the clamping member 402 are fixedly connected, so that the rotating rod 404 can rotate around the axis of the fixed shaft 407; the two ends of the clamping member 402 are fixed with U-shaped plates 403, and the U-shaped plates 403 are provided with snap-fit ​​grooves; the other end of the rotating rod 404 is adapted to the snap-fit ​​groove of the U-shaped plate 403 for snap-fit ​​engagement; the outer wall of the other end of the rotating rod 404 is also threaded with a threaded wire 405, which can abut and press the U-shaped plate 403 after being tightened, thereby firmly locking the clamping member 402 on the fixed seat 401.

[0025] In a preferred embodiment, in order to facilitate the installation of the clamping member 402, the fixing base 401 is provided with an installation groove for placing the clamping member 402, and the bottom shape of the clamping member 402 is adapted to the shape of the installation groove.

[0026] In a preferred embodiment, to ensure smooth operation of the guiding mechanism, the guide groove on the fixed plate 303 is a through circular groove, the telescopic shaft 302 is a round rod, and the outer diameter of the telescopic shaft 302 slides in conjunction with the inner diameter of the guide groove.

[0027] In a preferred embodiment, to ensure coordinated movement, the axis of the output end of the double-rod cylinder 2 is parallel to the axis of the telescopic shaft 302.

[0028] As a preferred embodiment, in order to facilitate the installation of the fixing plate 303, the fixing plate 303 is provided with a through hole for the first bolt 5 to pass through.

[0029] Working principle: In the automated production process, when the plastic bottle is detected to have reached the designated station, the external control system drives the double-rod cylinder 2 to move. The two output ends of the double-rod cylinder 2 move towards each other, pushing the two telescopic plates 301 to move towards the center. While the telescopic plates 301 are moving, the telescopic shaft 302, which is fixedly connected to the telescopic plates 301, slides synchronously in the guide groove of the fixed plate 303. Since the position of the fixed plate 303 is fixed, the sliding fit between the telescopic shaft 302 and the guide groove provides precise linear motion guidance for the entire sliding assembly 3, ensuring that the two clamping assemblies 4 can move smoothly and accurately toward the center line. Finally, the two clamping parts 402 clamp the plastic bottle from both sides simultaneously, completing high-precision positioning. When it is necessary to replace the plastic bottle to fit different sizes, the operator first loosens the threads 405 on the rotating rods 404 on both sides to release the clamping force of the threads 405 on the U-shaped plate 403; then, rotate the rotating rods 404 outward around the fixed shaft 407 so that the other end of the rotating rods 404 disengages from the locking groove of the U-shaped plate 403; at this time, the clamping part 402 is unrestrained and can be easily removed from the mounting groove of the fixed seat 401; after replacing the new clamping part 402, the operation is reversed, the rotating rods 404 are rotated back and locked into the locking groove of the U-shaped plate 403 of the new clamping part 402, and finally the threads 405 are tightened to quickly and securely complete the replacement of the clamp.

Claims

1. An automatic processing and positioning fixture for plastic caps, comprising a support frame (1), a double-rod cylinder (2) fixedly connected to the support frame (1), a sliding assembly (3) driven by the double-rod cylinder (2), and a clamping assembly (4) installed on the sliding assembly (3). The sliding assembly (3) includes a telescopic plate (301) connected to the output end of the double-rod cylinder (2). The clamping assembly (4) includes a fixing seat (401) fixed to the telescopic plate (301) and a clamping member (402) detachably mounted to the fixing seat (401), characterized in that, The clamp also includes a fixing plate (303), which is fixed to the same mounting reference as the support frame (1) by a first bolt (5); the sliding assembly (3) also includes a telescopic shaft (302), one end of which is fixedly connected to the telescopic plate (301), and the other end of which is slidably connected to the fixing plate (303). The clamping assembly (4) further includes a fixed shaft (407), a rotating rod (404), a rotating ring (406), and a threaded wire (405) fixedly connected to both ends of the fixed base (401); one end of the rotating rod (404) is rotatably connected to the fixed shaft (407) through the rotating ring (406). The clamping member (402) has U-shaped plates (403) fixed at both ends, and the U-shaped plates (403) have snap-fit ​​grooves. The other end of the rotating rod (404) is adapted to snap-fit ​​the snap-fit ​​grooves, and the other end of the rotating rod (404) is threaded with the threaded wire (405), which is used to tighten to press against the U-shaped plate (403).

2. The automatic processing and positioning fixture for plastic caps according to claim 1, characterized in that, The clamp includes two sliding components (3) respectively connected to the two output ends of the double-rod cylinder (2), and two clamping components (4) respectively mounted on the two telescopic plates (301).

3. The automatic processing and positioning fixture for plastic caps according to claim 1, characterized in that, The telescopic shaft (302) is fixed to one end of the telescopic plate (301) away from the clamping assembly (4).

4. The automatic processing and positioning fixture for plastic caps according to claim 1, characterized in that, The axis of the output end of the double-rod cylinder (2) is parallel to the axis of the telescopic shaft (302).

5. The automatic processing and positioning fixture for plastic caps according to claim 1, characterized in that, The mounting base (401) has a mounting groove for placing the clamping member (402).

6. The automatic processing and positioning fixture for plastic caps according to claim 1, characterized in that, The fixed plate (303) is provided with a guide groove for sliding cooperation of the telescopic shaft (302).

7. The automatic processing and positioning fixture for plastic caps according to claim 1, characterized in that, One end of the rotating rod (404) is fixedly connected to the rotating ring (406), and the rotating ring (406) is sleeved on the outer periphery of the fixed shaft (407).

8. The automatic processing and positioning fixture for plastic caps according to claim 1, characterized in that, The fixing plate (303) has a through hole for the first bolt (5) to pass through.

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