CN206426207U - PTFE product Precision Machining device for automatically molding - Google Patents

Abstract

The utility model discloses an automatic forming device for precision machining of PTFE products, which comprises a bottom plate, a clamping step feeding mechanism arranged on the bottom plate, a tooth pattern finishing mechanism and a cutting forming mechanism. The feeding mechanism includes a guide rail arranged parallel to the feeding direction of the product, a carriage arranged on the guide rail matchedly and driven to step forward, and a carriage arranged on the carriage and driven to clamp or release the product. Clamping cylinder; PTFE precision machining automatic molding machine can realize precision machining of PTFE materials, and use high-speed moving sharp blades to process them. The speed of the blades can reach 500mm/s. Under the condition of PTFE jog feeding and high-speed tool processing , The deformation of PTFE is very small, which can be used to process the required high-efficiency and high-precision PTFE products.

Description

Automatic molding device for precision machining of PTFE products

technical field

The utility model relates to the technical field of mechanical processing, in particular to an automatic forming device for precise processing of PTFE products.

Background technique

Figure 1 shows a schematic diagram of the structure of the shear pad. As shown in Figure 1 , the shear pad 100 includes a cuboid body 130, a parallel tooth pattern 110 formed on the upper surface of the body 130, and a guide base 120 formed on the lower surface of the body 130. The rear end of the base is flush with the body, and the front end is formed with a chamfer 121 and is shorter than the body.

Because the material of the cutting head pad is required to be PTFE, the mechanical properties of PTFE material are soft and have "cold flow". That is, the plastic deformation (creep) of material products under long-term continuous load, which makes it difficult to control the processing accuracy within 0.1mm during molding, which cannot meet the use requirements for tooth lines, and the efficiency of manual removal Low, it is difficult to meet the needs of production and customers.

Utility model content

The purpose of the utility model is to provide an automatic molding device for precise machining of PTFE products aiming at the technical defects existing in the prior art.

The technical scheme adopted for realizing the purpose of this utility model is:

An automatic forming device for precision machining of PTFE products, comprising a bottom plate, a clamping step feeding mechanism arranged on the bottom plate, a tooth pattern finishing mechanism and a cutting and forming mechanism,

The clamping and stepping feeding mechanism includes a guide rail arranged parallel to the product feeding direction, a carriage that is matched and arranged on the guide rail and is driven to step forward, and is arranged on the carriage and is driven Clamping cylinder to clamp or release the product;

The tooth pattern finishing mechanism includes a vertical punching knife driven to extend and retract along the vertical direction of the tooth pattern, and a bevel punching knife driven to extend and retract along the inclined surface direction of the tooth pattern,

The cutting and forming mechanism includes a guide seat fixedly connected with the bottom plate to accept the delivered products, a vertical cutting knife driven to extend and retract along the vertical direction of the guide seat, and an inclined surface of the guide base along the end of the product. The direction is driven to protrude and retract the bevel cutting knife, the vertical cutting knife and the bevel cutting knife are located on the side of the guide seat, and there is also a device on the opposite side of the guide seat that is driven to extend and retract vertically relative to the product. Product cutting knife.

The elevation punching knife, inclined-plane punching knife, elevation cutting knife and inclined-plane cutting knife are respectively fixed on the connecting rods guided by the guide seat fixedly connected with the bottom plate, and the connecting rods are respectively connected with the high-speed cylinder transmission To realize the actuated extension and retraction.

The connection side of the connecting rod is formed with a protrusion, and the piston rod end of the high-speed cylinder is fixedly provided with the concave cavity which is matchedly embedded and connected.

A stepping motor is fixedly arranged on the bottom plate, and a ball screw is arranged between the stepping motor and the sliding seat.

The vertical punching knife, the inclined punching knife, the vertical cutting knife, the inclined cutting knife and the product cutting knife are inclined plane knives respectively.

It also includes a jacket ring driven by the clamping cylinder to reciprocate in the vertical direction of the product, and the product passes through the middle of the jacket ring.

The connecting rod corresponding to the product cutting knife is block-shaped, and pressure blocks are respectively arranged on the front and rear sides of the connecting rod to cooperate with the guide seat to clamp the product.

A finishing method using the described PTFE product precision machining automatic molding device, is characterized in that, comprises the following steps,

1) The clamping cylinder drives the clamping product, and the carriage is driven one step forward,

2) The vertical punching knife and the bevel punching knife move in sequence to realize the finishing of two surfaces of a tooth pattern;

3) Repeat steps 1) and 2) until reaching the predetermined product cut-off length;

4) The product cutting knife is driven to extend out to cut off the product, and at the same time use the pressing block or the connecting rod to cooperate with the guide seat to clamp and position the product, the clamping cylinder releases the product, and the carriage is driven to reset and clamp the product again;

5) During the reset process of the carriage, the vertical cutting knife and the bevel cutting knife move in sequence to realize the finishing forming of the guide base of the product;

6) The product cutting knife is driven to recover and release the positioning of the product,

7) Repeat steps 1)-6) until all of them are cut and formed. While circulating, the processed PTFE products and waste materials are continuously ejected and automatically fall into the receiving box.

Compared with the prior art, the beneficial effects of the utility model are:

PTFE precision machining automatic molding machine can realize precision machining of PTFE materials, and use high-speed moving sharp blades to process them. The speed of the blades can reach 500mm/s. The amount is very small, which can be used to process the required high-efficiency and high-precision PTFE products.

Description of drawings

Fig. 1 shows the schematic diagram of the structure of the cutting pad;

Fig. 2 shows the structural representation of the PTFE product precision machining automatic molding device of the utility model;

Fig. 3 is a side view structural schematic diagram shown in Fig. 2;

Figure 4 is a partially enlarged schematic diagram of part A shown in Figure 3;

FIG. 5 is a partially enlarged schematic diagram of part B shown in FIG. 3 .

detailed description

Below in conjunction with accompanying drawing and specific embodiment the utility model is described in further detail. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

As shown in Figures 1-5, the PTFE product precision machining automatic forming device of the present utility model is used for finishing the shear pad, wherein the PTFE product is a shear pad or any other similar product, which includes a vertically placed bottom plate 1. The clamping and stepping feeding mechanism, the tooth pattern finishing mechanism and the cutting and forming mechanism arranged on the bottom plate,

The clamping and stepping feeding mechanism includes a guide rail 20 arranged parallel to the feeding direction of the strip-shaped product 100 to be processed, a carriage 21 that is matchedly arranged on the guide rail and driven to step forward, and arranged on the The clamping cylinder 22 is driven to clamp or release the product on the carriage; a stepping motor is fixed on the bottom plate, and a high-precision ball screw is disposed between the stepping motor and the sliding seat. The strip-shaped product to be processed is a multi-section head-to-head cutting pad, which basically matches the shape of the cutting head pad, but needs to be finished. At the same time, in order to realize the clamping of the product by the clamping cylinder, it also includes a jacket ring 23 driven by the clamping cylinder to reciprocate in the vertical direction of the product, and the product passes through the middle of the jacket ring. Pass. At the same time, the adjacent side of the carriage 21 and the product is provided with a card slot matching the guide base, that is, the guide base is inserted into the guide base by the card slot and can be moved relatively, and the relative locking is realized by the jacket ring. .

The tooth pattern finishing mechanism includes a vertical punching knife 31 driven to extend and retract along the vertical direction of the tooth pattern of the product, and a bevel punching knife 31 driven to extend and retract along the inclined surface direction of the tooth pattern. Cutter 32, described elevation punching knife 31 and inclined plane punching knife 32 are inclined plane knives respectively and are respectively fixed on the connecting rod that is guided by the guide seat that is fixedly connected with base plate 1, and described connecting rod is respectively connected with high-speed The air cylinder 10 is transmission-connected to realize said driven extension and retraction.

The stable output of the high-speed cylinder is used to provide power for the movement of the cutter, and with the cooperation of the guide seat and the connecting rod, the accuracy and speed of the movement of the cutter are guaranteed, and the processing efficiency is effectively improved. Moreover, the use of fast cutting processing reduces the force on the product , It is not easy to deform, and can effectively guarantee the processing accuracy.

The cutting forming mechanism includes a guide seat 40 fixedly connected with the bottom plate to receive the delivered product, a vertical cutting knife 43 driven to extend and retract along the vertical direction of the product end guide base, and The bevel cutting knife 42 that is driven to extend and retract along the slope direction of the guide base at the end of the product. Also be provided with the product cutting knife 41 that is driven to vertically protrude and retract relative to the product, and the described vertical cutting knife and bevel cutting knife and product cutting knife 41 are respectively inclined-plane knives and are respectively fixed on guides that are fixedly connected with the bottom plate. On the connecting rods guided by the seat, the connecting rods are respectively driven and connected with the high-speed cylinder 10 to realize the driven extension and retraction. The inclined-plane knife is in the shape of a flat plate, and one side is designed as a slope to form a blade, and the other side is kept flat to ensure the precision of the product after cutting. The guide seat is arranged corresponding to the carriage, and is used to carry and guide the product, that is, the guide seat is also provided with a groove corresponding to the guide base.

Wherein, in order to maintain the continuity of processing, the product is clamped while cutting so as to reset the clamping step feeding mechanism. The connecting rod corresponding to the product cutting knife is a block structure, and the two sides of the block structure Sides are provided with guide side plates to guide it, and pressure blocks 44 are respectively provided on the front and rear sides of the connecting rod of the block structure. When the product cutting knife 41 cuts off the product correspondingly, the pressure blocks 44 can The product is positioned to prevent the product from being returned when the clamping step-feeding mechanism is reset, and the corresponding position of the guide seat and the product cutting knife is formed with a knife groove hole to avoid collision.

In order to realize the smooth transmission between the connecting rod and the high-speed cylinder, the connection end of the connecting rod and the high-speed cylinder is formed with a protrusion or a concave cavity, and the end of the piston rod of the high-speed cylinder is formed with a matching hole that allows the protrusion to be embedded in it. The concave cavity or the convex block that is embedded in the concave cavity is fixedly arranged. The convex block is preferably a T-shaped structure, and the T-shaped structure is used to cooperate to ensure the transmission while giving a certain degree of freedom between the high-speed piston and the connecting rod. , improve the stability of connection operation and avoid stuck.

Preferably, in order to improve the dust removal effect, because the waste generated by the finishing process is very small, the dust removal requirements can be met by directly setting the dust suction port at the corresponding position of each cutter.

Specifically, the finishing method using the described PTFE product precision machining automatic molding device includes the following steps,

1) The clamping cylinder drives the clamping product, and the carriage is driven one step forward,

2) The vertical punching knife and the bevel punching knife move in sequence to realize the finishing of two surfaces of a tooth pattern;

3) Repeat steps 1) and 2) until reaching the predetermined product cut-off length;

4) The product cutting knife 9 is driven to extend out to cut off the product, and at the same time use the pressing block and the guide seat to clamp and position the product, the clamping cylinder releases the product, and the carriage is driven to reset and clamp the product again;

5) During the reset process of the carriage, the vertical cutting knife and the bevel cutting knife move in sequence to realize the finishing forming of the guide base of the product;

6) The product cutting knife 9 is driven to recover and release the positioning of the product,

7) Repeat steps 1)-6) until all of them are cut and formed. While circulating, the processed PTFE products and waste materials are continuously ejected and automatically fall into the receiving box. In this way, PTFE products are continuously processed.

The PTFE precision processing automatic forming machine of the utility model replaces the original manual cutting method and directly forms automatically. Increase the original efficiency from 30 pcs/h to 150 pcs/h, increase the efficiency by five times, and greatly reduce the error caused by manual resection, and the scrap rate caused by unstable manual resection is reduced from 30% to 5%. The production efficiency and quality have been greatly improved, the labor intensity and production cost of employees have been reduced, and customer satisfaction has also been improved.

Moreover, the processing method of the utility model utilizes the clamping and positioning of the product in sequence to realize the finishing of the guide base and the reset of the clamping and stepping feeding mechanism at the same time, greatly reducing the waiting time and effectively improving the overall efficiency. Guaranteed machining accuracy.

The above is only a preferred embodiment of the utility model, it should be pointed out that for those of ordinary skill in the art, without departing from the principle of the utility model, some improvements and modifications can also be made, these Improvement and retouching should also be regarded as the protection scope of the present utility model.

Claims (7)

1. a PTFE product precision machining automatic molding device, is characterized in that, comprises base plate, is arranged on the clamping step-feeding mechanism on described base plate, tooth pattern finishing mechanism and cutting forming mechanism, The clamping and stepping feeding mechanism includes a guide rail arranged parallel to the product feeding direction, a carriage that is matched and arranged on the guide rail and is driven to step forward, and is arranged on the carriage and is driven Clamping cylinder to clamp or release the product; The tooth pattern finishing mechanism includes a vertical punching knife driven to extend and retract along the vertical direction of the tooth pattern, and a bevel punching knife driven to extend and retract along the inclined surface direction of the tooth pattern, The cutting and forming mechanism includes a guide seat fixedly connected with the bottom plate to accept the delivered products, a vertical cutting knife driven to extend and retract along the vertical direction of the guide seat, and an inclined surface of the guide base along the end of the product. The direction is driven to protrude and retract the bevel cutting knife, the vertical cutting knife and the bevel cutting knife are located on the side of the guide seat, and there is also a device on the opposite side of the guide seat that is driven to extend and retract vertically relative to the product. Product cutting knife. 2. PTFE product precision machining automatic forming device as claimed in claim 1, is characterized in that, described vertical face punching knife, inclined plane punching knife, vertical cutting knife and inclined plane cutting knife are respectively fixed on and fixedly connected with base plate On the connecting rods guided by the guide seat, the connecting rods are respectively connected with the high-speed cylinder in transmission to realize the driven extension and retraction. 3. The precision machining automatic forming device for PTFE products as claimed in claim 2, characterized in that, the connecting side of the connecting rod is formed with a bump, and the piston rod end of the high-speed cylinder is fixedly provided with a matching ground and realizes connected cavities. 4. The precision machining automatic molding device for PTFE products as claimed in claim 1, wherein a stepping motor is fixedly arranged on the base plate, and a ball screw is arranged between the stepping motor and the sliding seat. 5. PTFE product precision machining automatic molding device as claimed in claim 1, is characterized in that, described vertical face punching knife, inclined plane punching knife, vertical cutting knife and inclined plane cutting knife and product cutting knife are inclined-plane respectively Knife. 6. PTFE product precision machining automatic forming device as claimed in claim 1, is characterized in that, also comprises the jacket ring that is driven by described clamping cylinder to reciprocate on product vertical direction, and described product is from the The middle part of the jacket ring mentioned above passes through. 7. PTFE product precision machining automatic forming device as claimed in claim 1, is characterized in that, the corresponding connecting rod of product cutting knife is block shape, and the front and rear sides of this connecting rod are respectively provided with briquetting block to cooperate with guide seat Clamp the product.