Automatic all-in-one machine for hot cutting and scraping of water gap of injection-molded medical product

Abstract

The utility model discloses an injection molding medical product water gap hot cutting and scraping automatic all-in-one machine which comprises a workbench, and a positioning jig used for positioning a product and a hot cutting mechanism used for cutting off a water gap in the product are installed on the workbench. A scraping mechanism and a product driving device are further installed on the workbench, the scraping mechanism comprises a scraper and a scraper driving device, and the scraper driving device is used for driving the scraper to move so as to be attached to the product or leave the product; the product driving device is used for clamping the product and can push the product towards the scraper, and then residual water gaps in the product are scraped off through the scraper. The hot cutting mechanism is used for hot cutting of the water outlet, the position subjected to hot cutting cannot become white, then the scraping mechanism is matched with the product driving device for use to scrape the residual water outlet, the product is smooth and flat, the appearance quality of the product is improved, automatic hot cutting and scraping machining are achieved, labor input is reduced, and efficiency can be greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of nozzle cutting devices for injection molding products, and in particular to an automatic integrated machine for hot cutting and scraping nozzles of injection molding medical products. Background Art

[0002] After the product is injection molded, it will be glued together with the nozzle, and the nozzle on the product needs to be removed later. For transparent products, especially transparent medical products, such as medical puncture cores, the product surface is required to be flat and smooth, and burrs and appearance defects are not allowed; if the nozzle is cut directly, the cut position on the product will turn white, which cannot meet the quality requirements of medical products. For this reason, the prior art has adopted a hot cutting method to cut the nozzle to ensure the appearance quality of the product. For example, the Chinese utility model patent with announcement number CN218019922U and announcement date 2022.12.13 discloses an automatic hot shear nozzle material device, which uses a heating unit to heat the pneumatic scissors to achieve hot shearing of the nozzle material. The nozzle after hot shearing will not turn white, thereby ensuring the appearance quality of the product. However, the existing nozzle hot cutting device cannot guarantee that the nozzle is completely cut off from the product. Often, a little nozzle will remain after cutting at the connection between the product and the nozzle. The residual nozzle needs to be manually scraped off in secondary processing, which requires a lot of manpower, increases labor costs, and is inefficient. Therefore, it is necessary to improve the prior art to overcome the defects in the prior art. Summary of the invention

[0003] The problem to be solved by the utility model is to provide an automatic integrated machine for hot cutting and scraping of nozzles of injection-molded medical products, so as to overcome the defects of the prior art that nozzles are left with residues after cutting, manual secondary scraping is required, manpower and cost are wasted, and efficiency is low.

[0004] The technical solution adopted by the utility model to solve its technical problems is: an automatic integrated machine for hot cutting and scraping of water nozzles of injection-molded medical products, comprising: a workbench, on which is installed a positioning fixture for positioning the product and a hot cutting mechanism for cutting off the water nozzles on the product; the workbench is also equipped with a scraping mechanism and a product driving device, the scraping mechanism includes a scraper and a scraper driving device, and the scraper driving device is used to drive the scraper to move so as to be close to the product or leave the product; the product driving device is used to clamp the product and can push the product toward the scraper, and then use the scraper to scrape off the residual water nozzles on the product.

[0005] As a further improvement of the utility model, the hot cutting mechanism includes an upper cutter, a lower cutter, a heating block and a first cylinder. A bracket is installed on the top of the workbench. The heating block is slidably installed on the bracket through a mounting seat. The upper cutter is fixed on the heating block, the lower cutter is fixed on the workbench and is arranged opposite to the upper cutter. The first cylinder is fixed on the bracket and connected to the mounting seat.

[0006] As a further improvement of the utility model, the scraper driving device includes a sliding block, a spring and a scraper pushing device, the scraper is fixed on the sliding block, one end of the spring elastically rests on the sliding block and always applies an elastic force to the sliding block toward the product direction; the scraper pushing device is used to push the sliding block to move in a direction away from the product.

[0007] As a further improvement of the present invention, the scraper pushing device includes a second cylinder and a pushing head, the second cylinder is vertically fixed on the workbench, and the pushing head is installed on the cylinder shaft of the second cylinder and is located on one side of the sliding block; when the second cylinder drives the pushing head to move upward, the pushing head slides in contact with the sliding block and pushes the sliding block to move in a direction away from the product; when the second cylinder drives the pushing head to move downward to avoid the sliding block, the sliding block drives the scraper to stick to the product under the elastic force of the spring.

[0008] As a further improvement of the utility model, the push-off head is provided with a bullet-shaped upper end, a cylindrical lower end and a conical transition portion connected between the upper end and the lower end, and the diameter of the lower end is larger than the diameter of the upper end.

[0009] As a further improvement of the present utility model, the product driving device includes a finger cylinder and a third cylinder, the third cylinder is fixed on the workbench, the finger cylinder is fixed on the third cylinder, and both air claws of the finger cylinder are equipped with clamps, the finger cylinder is used to drive the two clamps to clamp the product, and the third cylinder is used to drive the finger cylinder to push the product toward the scraper.

[0010] As a further improvement of the present invention, the positioning fixture includes two positioning blocks arranged in parallel, both of the two positioning blocks are provided with positioning grooves for placing the product, and the scraper and the lower cutting knife are located between the two positioning blocks.

[0011] As a further improvement of the utility model, the product has two symmetrically distributed water inlets, and two of the corresponding scrapers, upper cutters and lower cutters are provided.

[0012] As a further improvement of the present invention, a protective plate is installed on the bracket at the front side of the heating block.

[0013] As a further improvement of the utility model, a material drop port is provided on the workbench directly below the water inlet, and a material guide plate is installed at the bottom of the workbench. The material guide plate is arranged to be tilted downward, and the upper end of the material guide plate is connected to the material drop port.

[0014] The beneficial effect of the utility model is as follows: the utility model provides an integrated automatic machine for hot cutting and scraping of water outlets of injection-molded medical products. By providing a hot cutting mechanism, a scraping mechanism and a product driving device, the hot cutting mechanism is first used to hot cut the water outlet, and no whitening will occur at the hot-cut position. Then, the scraping mechanism is used in conjunction with the product driving device to scrape off the residual water outlet, making the product smooth and flat, improving the appearance quality of the product, realizing automatic hot cutting and scraping processing, reducing labor input, and greatly improving efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a three-dimensional diagram of the utility model of the automatic integrated machine for hot cutting and scraping of the nozzle of the injection-molded medical product;

[0016] Figure 2 It is a three-dimensional diagram of the hot cutting mechanism in the utility model;

[0017] Figure 3 It is a three-dimensional diagram of the workbench and the positioning fixture, product driving device and scraping mechanism thereon in the utility model;

[0018] Figure 4 It is a front view of the scraping mechanism in the utility model.

[0019] Combined with the accompanying drawings, the following description is given:

[0020] 1. Workbench; 101. Blanking port; 2. Product; 3. Positioning fixture; 4. Scraper; 5. Upper cutter; 6. Lower cutter; 7. Heating block; 8. First cylinder; 9. Bracket; 10. Mounting seat; 11. Sliding block; 12. Spring; 13. Second cylinder; 14. Push-off head; 15. Finger cylinder; 16. Third cylinder; 17. Gripper; 18. Protective plate; 19. Guide plate; 20. First slide rail; 21. Second slide rail; 22. Heating rod; 23. Temperature sensor; 24. Horizontal plate; 25. Support block. DETAILED DESCRIPTION

[0021] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings.

[0022] See also Figures 1 to 4The utility model provides an automatic integrated machine for hot cutting and scraping of water nozzles of injection-molded medical products, which is used to remove the water nozzles on the product 2. It includes: a workbench 1, a positioning fixture 3, a hot cutting mechanism, a scraping mechanism and a product driving device. The bottom of the workbench 1 is an electric control box, and the positioning fixture 3, the hot cutting mechanism, the scraping mechanism and the product driving device are all installed on the top of the workbench 1.

[0023] The positioning fixture 3 is used to position the product 2, and includes two positioning blocks arranged in parallel with each other at a distance from each other. Both positioning blocks are provided with semicircular positioning grooves, and a positioning block located at the front side is also provided with a limiting step. Figure 3 As shown, product 2 is an injection-molded medical puncture core, the main body of which is cylindrical, and there are two water inlets on product 2, which are symmetrically connected to the outer circumference of the main body. One end of the main body has a disc portion with a diameter larger than that of the main body, and the disc portion has a convex column. The main body of product 2 is placed in two positioning grooves, so that the disc portion is pressed against a positioning block on the front side, and the convex column of the disc portion is limited on the limiting step, so as to position product 2; in this state, the other end of product 2 extends backward from a positioning block on the rear side.

[0024] See also Figure 1 and Figure 2 The hot cutting mechanism is used to hot-cut the two nozzles on the product 2. The hot cutting mechanism includes two upper cutters 5, two lower cutters 6, two heating blocks 7 and a first cylinder 8. The two lower cutters 6 are fixedly installed vertically on the workbench 1 and are located between the two positioning blocks. The two lower cutters 6 are also distributed on the left and right sides of the product 2. When the product 2 is placed on the positioning fixture 3 and positioned, the connection position between the main body of the product 2 and the two nozzles is just on the blade of the lower cutter 6.

[0025] Furthermore, a gantry-type bracket 9 is installed on the top of the workbench 1, and a back plate is provided on the bracket 9, and two first slide rails 20 are fixed vertically side by side on the upper edge of the back plate, and a mounting seat 10 is slidably installed on the two first slide rails 20 through a slider, and two heating blocks 7 are symmetrically fixed on the bottom of the mounting seat 10, and two upper cutters 5 are fixed on the two heating blocks 7 one by one, and the two upper cutters 5 are arranged opposite to the two lower cutters 6 up and down. A heating rod 22 and a temperature sensor 23 are inserted into the two heating blocks 7, and the heating rod 22 is used to heat the heating block 7, and the temperature will be directly transmitted to the upper cutter 5; the temperature sensor 23 is used to detect the temperature of the heating block 7, and when the set temperature is reached, the hot cutting action can be performed. The first cylinder 8 is vertically fixed to the top of the bracket 9 and connected to the mounting seat 10. When the temperature of the heating block 7 is heated to the set temperature, that is, the temperature of the upper cutter 5 meets the hot cutting requirement, the manual operation button starts the first cylinder 8, and the first cylinder 8 drives the upper cutter 5 to move vertically downward, and cooperates with the lower cutter 6 to hot-cut and remove the water outlet on the product 2. The hot-cut position will not appear white, which can ensure the appearance quality of the product 2.

[0026] Among them, a protective plate 18 is installed on the bracket 9 in front of the heating block 7 to prevent the operator from accidentally touching the heating block 7 and causing scalding accidents.

[0027] In addition, a material drop opening 101 is provided on the workbench 1 directly below the two nozzles, and a material guide plate 19 is installed at the bottom of the workbench 1. The material guide plate 19 is arranged to be tilted downward, and the upper end of the material guide plate 19 is connected to the material drop opening 101. The nozzle after thermal cutting will fall downward from the material drop opening 101 onto the material guide plate 19, and slide along the material guide plate 19 to the material receiving box.

[0028] Since there is often some residual water outlet on the product 2 after hot cutting, the utility model further provides a scraping mechanism on the workbench 1 to perform secondary processing on the product 2 after hot cutting to scrape the residual water outlet.

[0029] See also Figure 1 and Figure 3 The scraping mechanism includes two scrapers 4 and a scraper driving device. The two scrapers 4 are located between two positioning blocks, and the two scrapers 4 are also distributed on the left and right sides of the product 2. The two lower cutters 6 are located on the rear side of the two scrapers 4, and the blades of the scrapers 4 are all set toward the water outlet direction of the product 2. The scraper driving device is used to drive the two scrapers 4 to move to be close to the product 2 or leave the product 2. The product driving device is used to clamp the product 2 and can push the product 2 toward the scraper 4, and then use the scraper 4 to scrape off the residual water outlet on the product 2. The utility model first uses the hot cutting mechanism to hot cut the outlet, and then scrapes off the residual outlet through the scraping mechanism, so that the product 2 is smooth and flat, improves the appearance quality of the product 2, realizes automated processing, reduces labor input, and can greatly improve efficiency.

[0030] See also Figure 3 and Figure 4 The scraper driving device includes two sliding blocks 11, two springs 12 and a scraper pushing device. Two support blocks 25 located on the left and right sides of the product 2 and a second slide rail 21 located between the two support blocks 25 are fixedly installed on the top of the workbench 1. The two sliding blocks 11 are slidably mounted on the second slide rail 21. In this embodiment, the sliding block 11 is specifically composed of a scraper fixing block and a slider. The two scrapers 4 are fixedly installed on the two sliding blocks 11 in a one-to-one correspondence, and a spring 12 is installed between each sliding block 11 and a corresponding support block 25. The spring 12 elastically abuts on the sliding block 11 and always applies an elastic force to the sliding block 11 toward the product 2.

[0031] Further, the scraper push-off device is used to push the sliding block 11 to move in the direction away from the product 2. The scraper push-off device includes a second cylinder 13 and a push-off head 14, the second cylinder 13 is vertically fixed to the bottom of the workbench 1 through a cylinder fixing block, and the cylinder shaft of the second cylinder 13 passes through the workbench 1 and extends upward, and the push-off head 14 is installed on the cylinder shaft of the second cylinder 13 and is located between the two sliding blocks 11. The push-off head 14 is provided with a bullet-shaped upper end, a cylindrical lower end, and a tapered transition portion connected between the upper end and the lower end, and the diameter of the lower end is larger than the diameter of the upper end.

[0032] Before placing the product 2, the push-off head 14 moves upward under the drive of the second cylinder 13, and the push-off head 14 slides in contact with the two sliding blocks 11, pushing the two sliding blocks 11 to move in the direction away from the product 2 (that is, the two sliding blocks 11 move away from each other). Under the elastic force of the spring 12, the side surfaces of the two sliding blocks 11 facing each other are both abutted against the outer periphery of the lower end of the push-off head 14. At this time, the distance between the two scrapers 4 is greater than the diameter of the main body of the product 2, so as to facilitate the placement of the product 2.

[0033] When the product 2 is placed and the start button is pressed, the second cylinder 13 drives the push-off head 14 to move downward to avoid the sliding block 11. The two sliding blocks 11 move toward the middle under the elastic force of their respective springs 12 until the scraper 4 is driven to abut against the product 2. The product driving device clamps the product 2 and pushes it toward the scraper 4, and then the scraper 4 is used to scrape off the remaining water on the product 2. The utility model uses the elastic force of the spring 12 to make the scraper 4 abut against the product 2, and the pressure is moderate to avoid leaving an indentation on the product 2.

[0034] See again Figure 1 and Figure 3The product driving device includes a finger cylinder 15 and a third cylinder 16. A horizontal plate 24 is also fixedly mounted on the bracket 9. The third cylinder 16 is a slide cylinder, which is fixed to the bottom of the horizontal plate 24 along the front-back direction. The finger cylinder 15 is fixed to the bottom of the third cylinder 16, and the two air claws of the finger cylinder 15 are both equipped with clamping claws 17. The two clamping claws 17 are provided with clamping grooves on the opposite sides of each other. When the product 2 is placed on the positioning fixture 3, the end of the product 2 extending backward is just located between the two clamping grooves, and the finger cylinder 15 clamps the product 2 by driving the two clamping claws 17 to move closer. The third cylinder 16 is used to drive the finger cylinder 15 to push the product 2 toward the scraper 4.

[0035] The working principle of this utility model of automatic integrated machine for hot cutting and scraping of injection-molded medical products is as follows:

[0036] Put the product 2 into the positioning fixture 3 and press the start switch, the finger cylinder 15 drives the two clamps 17 to move together to clamp the product 2, and at the same time the second cylinder 13 drives the push-off head 14 to move downward to avoid the sliding block 11. The two sliding blocks 11 move toward the middle under the elastic force of their respective springs 12, driving the scraper 4 to stick to the product 2; then the first cylinder 8 drives the upper cutter 5 to move vertically downward, and cooperates with the lower cutter 6 to hot-cut and remove the water outlet on the product 2, and then the first cylinder 8 drives the upper cutter 5 to reset; then the third cylinder 16 drives the finger cylinder 15 to push the product 2 toward the scraper 4, and the scraper 4 is used to scrape off the remaining water outlet on the product 2 to make the product 2 smooth and flat. After the action is completed, it resets, takes out the product, and completes the water outlet cutting operation.

[0037] In the above description, many specific details are described to facilitate a full understanding of the present invention. However, the above description is only a preferred embodiment of the present invention. The present invention can be implemented in many other ways different from those described herein, so the present invention is not limited by the specific implementation disclosed above. At the same time, any person familiar with the technical field can make many possible changes and modifications to the technical solution of the present invention by using the methods and technical contents disclosed above without departing from the scope of the technical solution of the present invention, or modify it into an equivalent embodiment of equivalent changes. Any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the scope of protection of the technical solution of the present invention.

Claims

1. An automatic integrated machine for hot cutting and scraping of nozzles of injection-molded medical products, comprising a workbench (1), on which a positioning fixture (3) for positioning a product (2) and a hot cutting mechanism for cutting off nozzles on the product (2) are installed; characterized in that: The workbench (1) is also provided with a scraping mechanism and a product driving device, wherein the scraping mechanism comprises a scraper (4) and a scraper driving device, wherein the scraper driving device is used to drive the scraper (4) to move so as to be close to the product (2) or to move away from the product (2); the product driving device is used to clamp the product (2) and is capable of pushing the product (2) toward the scraper (4), thereby scraping off residual water outlets on the product (2) through the scraper (4).

2. The automatic integrated machine for hot cutting and scraping of nozzles for injection molded medical products according to claim 1, characterized in that: The hot cutting mechanism comprises an upper cutter (5), a lower cutter (6), a heating block (7) and a first cylinder (8); a bracket (9) is installed on the top of the workbench (1); the heating block (7) is slidably mounted on the bracket (9) via a mounting seat (10); the upper cutter (5) is fixed on the heating block (7); the lower cutter (6) is fixed on the workbench (1) and is arranged opposite to the upper cutter (5); and the first cylinder (8) is fixed on the bracket (9) and connected to the mounting seat (10).

3. The automatic integrated machine for hot cutting and scraping of injection-molded medical products according to claim 1, characterized in that: The scraper driving device comprises a sliding block (11), a spring (12) and a scraper pushing device, wherein the scraper (4) is fixed on the sliding block (11), one end of the spring (12) elastically abuts against the sliding block (11) and always applies an elastic force to the sliding block (11) in the direction of the product (2); the scraper pushing device is used to push the sliding block (11) to move in a direction away from the product (2).

4. The automatic integrated machine for hot cutting and scraping of injection-molded medical products according to claim 3, characterized in that: The scraper pushing-off device comprises a second cylinder (13) and a pushing-off head (14), wherein the second cylinder (13) is vertically fixed on the workbench (1), and the pushing-off head (14) is mounted on the cylinder shaft of the second cylinder (13) and is located on one side of the sliding block (11); when the second cylinder (13) drives the pushing-off head (14) to move upward, the pushing-off head (14) comes into sliding contact with the sliding block (11) and pushes the sliding block (11) to move in a direction away from the product (2); when the second cylinder (13) drives the pushing-off head (14) to move downward to avoid the sliding block (11), the sliding block (11) drives the scraper (4) to be pressed against the product (2) under the elastic force of the spring (12).

5. The automatic integrated machine for hot cutting and scraping of injection-molded medical products according to claim 4, characterized in that: The push-off head (14) is provided with a bullet-shaped upper end, a cylindrical lower end, and a tapered transition portion connected between the upper end and the lower end, and the diameter of the lower end is larger than the diameter of the upper end.

6. The automatic integrated machine for hot cutting and scraping of nozzles for injection-molded medical products according to claim 1, characterized in that: The product driving device comprises a finger cylinder (15) and a third cylinder (16), wherein the third cylinder (16) is fixed on the workbench (1), the finger cylinder (15) is fixed on the third cylinder (16), and two air claws of the finger cylinder (15) are both equipped with clamps (17), the finger cylinder (15) is used to drive the two clamps (17) to clamp the product (2), and the third cylinder (16) is used to drive the finger cylinder (15) to push the product (2) toward the scraper (4).

7. The automatic integrated machine for hot cutting and scraping of nozzles for injection molded medical products according to claim 2, characterized in that: The positioning fixture (3) comprises two positioning blocks arranged in parallel, and both positioning blocks are provided with positioning grooves for placing the product (2), and the scraper (4) and the lower cutting knife (6) are located between the two positioning blocks.

8. The automatic integrated machine for hot cutting and scraping of nozzles for injection molded medical products according to claim 2, characterized in that: The product (2) is provided with two symmetrically distributed water inlets, and two corresponding scrapers (4), two upper cutters (5) and two lower cutters (6) are provided.

9. The automatic integrated machine for hot cutting and scraping of injection-molded medical products according to claim 2, characterized in that: A protective plate (18) is installed on the bracket (9) at the front side of the heating block (7).

10. The automatic integrated machine for hot cutting and scraping of nozzles for injection molded medical products according to claim 1, characterized in that: A material drop opening (101) is provided on the workbench (1) directly below the water inlet, and a material guide plate (19) is installed at the bottom of the workbench (1). The material guide plate (19) is arranged to be tilted downward, and the upper end of the material guide plate (19) is connected to the material drop opening (101).

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