Material pipe bisection sealing mechanism for blow molding production equipment

Abstract

The utility model belongs to the technical field of blow molding production equipment, and relates to a material pipe bisection sealing mechanism for blow molding production equipment, which comprises a fixed frame, a sliding table bracket, two cutter components and a bisection driving mechanism, the fixed frame is fixedly arranged on a rack of blow molding production equipment and is positioned on the rear side below a material pipe forming machine head; the lower end of the fixing frame is movably connected with the right portion of one face of the sliding table support in the front-back direction. A material passing hole is formed in the left part of the sliding table bracket; the two cutter assemblies are each composed of a cutter holder, a cutter and a sealing pressing plate. The sealing pressing plate and the cutter are fixedly arranged on the same side of the cutter holder; second guide rails are fixed to the front side and the rear side of the material passing hole in the other face of the sliding table support. The two cutter assemblies are connected to the two second guide rails through the two second sliding blocks. The two cutter assemblies are arranged in parallel in the left-right direction in the mode that the cutter edges are opposite. The bisection driving mechanism is connected between the tool apron and the sliding table support. The mechanism is well suitable for high-speed rotary type multi-mold blow molding production, and adjustment of a material pipe forming machine head is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model belongs to blow molding production equipment technical field, concretely relates to a kind of material pipe pair cutting sealing mechanism for blow molding production equipment. BACKGROUND

[0002] Blow molding process is one of important processing methods of thermoplastic plastics, and can be used for processing thin mold and bottle, barrel and other hollow products. Current blow molding production equipment mainly includes feeding mechanism, heating feeding mechanism, material pipe forming head, material pipe cutting mechanism, product mold forming mechanism, material edge removing mechanism and conveying mechanism arranged between each mechanism. Among them, material pipe forming head is used to form material pipe from molten plastic raw material, and output material pipe downward under the action of weight, material pipe enters the space between the mold cavity of opened product mold forming mechanism, after mold cavity is closed, cut off the part of material pipe located at the upper end of mold cavity by material pipe cutting mechanism. Material pipe cutting mechanism is arranged at the position below material pipe forming head. The existing material pipe cutting mechanism generally adopts cantilever knife type one-way horizontal movement cutting mechanism, i.e. cutting knife is located at one side of material pipe, and realizes cutting of material pipe by horizontal movement of cutting knife towards material pipe. The existing one-way cutting method has large cutting knife moving stroke, and cutting knife is cantilevered, which is not suitable for high-speed rotary multi-mold blow molding production line. In addition, material pipe sealing mechanism cannot be arranged on material pipe cutting mechanism. Sealing mechanism needs to be arranged at the upper end of mold cavity of product mold forming mechanism, which leads to complex structure of existing product mold forming mechanism, and also limits the blow gas of product mold forming mechanism to adopt only lower blow gas mode. In addition, the existing material pipe cutting machine is fixedly installed below material pipe forming head, and the distance between them is close, which is not convenient for adjusting material pipe forming head. SUMMARY

[0003] The utility model provides a kind of material pipe pair cutting sealing mechanism for blow molding production equipment, which can be better applied to high-speed rotary multi-mold blow molding production and facilitate the adjustment of material pipe forming head.

[0004] The above object of the utility model is realized by the following technical scheme:

[0005] A kind of material pipe pair cutting sealing mechanism for blow molding production equipment, including fixed frame, sliding table support, two cutting knife assemblies and pair cutting drive mechanism;

[0006] The fixed frame is fixedly installed on the rack of blow molding production equipment, and is located at the position below and rear of material pipe forming head;Fixed frame and sliding table support are movably connected by linear guide cooperation structure along front-rear direction at right part of one side;Material hole is arranged at the left part of sliding table support;

[0007] The two cutter assemblies are both composed of a cutter seat, a cutter and a sealing press plate; the sealing press plate and the cutter are fixed on the same side of the cutter seat and arranged in an up-down manner; two second guide rails are fixed on the other side of the slide bracket and located on the front and back of the material hole; the two cutter assemblies are connected to the two second guide rails through two second sliding blocks and arranged in a left-right parallel manner with the cutting edges opposite to each other.

[0008] The pair-cutting driving mechanism is connected between the cutter seat and the slide bracket and is a driving mechanism for driving the two cutter assemblies to move reversely synchronously.

[0009] Moreover, the pair-cutting driving mechanism comprises a pair-cutting driving cylinder and two sets of gear and rack transmission mechanisms; the pair-cutting driving cylinder is fixed on the other side of the slide bracket with the cylinder rod facing left and is fixedly connected with the middle part of the right end of the cutter seat of the right-side cutter assembly at the right part of the other side of the slide bracket; the two sets of gear and rack transmission mechanisms each comprise a gear, a first transmission rack and a second transmission rack; the first transmission rack and the second transmission rack are respectively engaged with the outer side and the inner side of the gear; the two gears are rotatably installed on the other side of the slide bracket through gear mounting seats and are located close to the front and back sides; the left ends of the two first transmission racks are respectively fixedly connected with the positions close to the front end and the rear end of the cutter seat of the left-side cutter assembly; the left ends of the two second transmission racks are respectively fixedly connected with the positions close to the front end and the rear end of the cutter seat of the right-side cutter assembly; the right parts of the first transmission racks and the right parts of the second transmission racks are respectively in penetrating fit with the gear mounting seats of the corresponding sides.

[0010] Moreover, the material pipe pair-cutting sealing mechanism further comprises a pair-cutter in-position buffer and a separate-cutter in-position buffer; the pair-cutter in-position buffer and the separate-cutter in-position buffer are both two; a front buffer mounting block and a rear buffer mounting block are vertically fixedly installed on the other side of the right end of the slide bracket; a pair of pair-cutter in-position buffers and a separate-cutter in-position buffer are fixedly installed on the front buffer mounting block and the rear buffer mounting block; the pair-cutter in-position buffers and the separate-cutter in-position buffers are arranged with the buffer heads facing left; the pair-cutter in-position buffers are arranged on the coaxial positions on the right side of the first transmission racks of the corresponding sides; the separate-cutter in-position buffers are arranged on the coaxial positions on the right side of the second transmission racks of the corresponding sides.

[0011] Moreover, a connecting plate is fixedly connected with the front end of the fixed frame; screw through holes are arranged on the connecting plate; screw thread holes corresponding to the screw through holes on the connecting plate are arranged on the slide bracket close to the rear part; the slide bracket is fixedly connected with the fixed frame in the working position by installing screws in the screw through holes and the corresponding screw thread holes.

[0012] The utility model has the advantages and positive effects that:

[0013] 1. The utility model discloses a slide table support is installed through the linear guide cooperation structure of setting along the front -back direction at the lower end of fixed frame, installs the synchronous reverse motion cutting knife assembly driven by the air cylinder on the slide table support, under the impetus of air cylinder, two cutting knife assemblies are close to cut the pipe first, cut under the hot pressing of the sealing press plate installed above the cutting knife, carry out the sealing of pressing, make hollow pipe bottom realize the function of sealing gas, can realize the simplification setting of product die forming mechanism in blow molding production equipment.

[0014] 2. The utility model discloses the cut of pipe is realized through the opposite movement of two cutting knife assemblies, compared with the cantilever type single knife cutting mode, cutting knife movement stroke is short, and the running stability is good, can better satisfy the demand of high -speed rotary type multi -mode blow molding production line.

[0015] 3, adopt this pipe pair cutting sealing mechanism, when adjusting pipe forming head, push the slide table support back, make pipe pair cutting sealing mechanism whole leave the position right below the forming head, thereby can reduce the inconvenience of pair cutting sealing mechanism when adjusting forming head, can prevent the damage of pair cutting knife assembly in the process of adjusting head, after forming head adjustment, move the slide table support to the original position, make the feed hole and the discharge port of pipe forming head are in line, can work normally. DRAWINGS

[0016] Figure 1 It is the plan view that the utility model is used for blow molding production equipment's pipe pair cutting sealing mechanism is located at the working position;

[0017] Figure 2 It is the bottom view that the utility model is used for blow molding production equipment's pipe pair cutting sealing mechanism is located at the working position;

[0018] Figure 3 It is the perspective view that the utility model is used for blow molding production equipment's pipe pair cutting sealing mechanism is located at the working position;

[0019] Figure 4 It is the structure schematic diagram that the utility model is used for blow molding production equipment's pipe pair cutting sealing mechanism removes to deviate the working position;

[0020] In the drawing: 1, fixed frame;2, slide table support;2.1, feed hole;3, cutting knife assembly;3.1, cutter holder;3.2, sealing press plate;3.3, cutting knife;4, first sliding block;5, first guide rail;6, second guide rail;7, second sliding block;8, first transmission rack;9, gear;10, second transmission rack;11, pair cutting drive cylinder;12, parting knife to position buffer;13, pair knife to position buffer;14, connecting plate. DETAILED DESCRIPTION

[0021] The structure of the utility model is further described below in combination with the drawings and by examples. It should be noted that the examples are narrative rather than limiting.

[0022] A kind of material pipe is cut to the sealing mechanism on blow molding production equipment, please see Figures 1-4 Including fixed frame 1, slide bracket 2, two cutter assemblies 3 and cut driving mechanism.

[0023] The fixed frame is fixedly installed on the rack of blow molding production equipment and is located below the rear side position of material pipe forming machine head. The fixed frame is fixedly installed with a plurality of first sliding blocks 4 on one side (upper end face or lower end face), and a first guide rail 5 is slidably connected in each row of first sliding blocks, forming a linear guide matching structure along the front and rear directions. The first guide rail 5 is fixedly connected with the right part of the slide bracket on one side, so that the slide bracket can move along the front and rear directions.

[0024] The slide bracket is a square flat bracket, and a material passing hole 2.1 for the material pipe to pass through is arranged on the left part of the slide bracket. The material passing hole is a square hole, and the size of the opening of the material passing hole needs to be larger than the cross section of the material pipe. A second guide rail 6 is fixedly installed on the other side of the slide bracket and located on the front and rear sides of the material passing hole.

[0025] Each cutter assembly is composed of a cutter seat 3.1, a cutter 3.3 and a sealing plate 3.2. The cutter seat is in the shape of a long strip. The sealing plate and the cutter are fixedly installed on the same side of the cutter seat and are arranged vertically, i.e. the sealing plate is arranged above the cutter, and a proper distance is set between the two. Second sliding blocks 7 are fixedly installed on both ends of the upper part of the cutter seat. Both cutter assemblies are connected to the two second guide rails 6 on the other side of the slide bracket through the two second sliding blocks, and the two cutter assemblies are arranged in parallel on the left and right sides with the cutting edges opposite to each other.

[0026] The pair cutting driving mechanism is used for driving the two cutting tool assemblies to move on the two second guide rails 6, and realizes the pair cutting and part cutting actions. The pair cutting driving mechanism comprises a pair cutting driving cylinder 11 and two groups of gear and rack transmission mechanisms. The pair cutting driving cylinder can adopt a gas cylinder, an oil cylinder, an electric push rod, etc. The pair cutting driving cylinder is fixed to the other side right part position of the slide bracket in the mode that the cylinder rod faces left, and the cylinder rod end is fixedly connected with the right end middle part of the cutter seat of the right side one group of cutting tool assemblies. The two groups of gear and rack transmission mechanisms each comprise a gear 9, a first transmission rack 8 and a second transmission rack 10. The first transmission rack 8 and the second transmission rack 10 are respectively engaged with the outer side and the inner side of the gear 9. The two gears 9 are rotatably installed on the lower ends of the slide bracket through gear mounting seats close to the front and rear sides, the left ends of the two first transmission racks 8 are fixedly connected with the cutter seat of the left side one group of cutting tool assemblies close to the front end and the rear end position, and the left ends of the two second transmission racks 10 are fixedly connected with the cutter seat of the right side one group of cutting tool assemblies close to the front end and the rear end position. The right part of the first transmission rack 8 and the right part of the second transmission rack 10 are each in penetratingly fitted cooperation with the corresponding side gear mounting seat.

[0027] In order to avoid the collision of the cutting tools when the pair cutting is in place, and ensure the service life of the cutting tools, in the utility model, pair cutting in place buffers 13 and part cutting in place buffers 12 are further arranged. The pair cutting in place buffers and the part cutting in place buffers can adopt existing columnar buffers, and can adopt hydraulic buffers, spring buffers, etc. The pair cutting in place buffers 13 and the part cutting in place buffers 12 are both two. A front buffer mounting block and a rear buffer mounting block are vertically fixedly installed on the other side right end of the slide bracket, and a pair cutting in place buffer and a part cutting in place buffer are fixedly installed on the front and rear buffer mounting blocks. The pair cutting in place buffer and the part cutting in place buffer are arranged in the direction that the buffer heads face left, wherein the pair cutting in place buffer is arranged at the coaxial position of the right side of the corresponding side first transmission rack 8, and the part cutting in place buffer is arranged at the coaxial position of the right side of the corresponding side second transmission rack. When the two cutting tool assemblies move towards each other to the position where the cutting edges will contact, the right ends of the two sides first transmission racks 8 contact the pair cutting in place buffers of the corresponding sides, and realize elastic buffering, thereby avoiding the high-speed rigid collision of the cutting edges of the two cutting tools. In the process that the two cutting tool assemblies move away from each other to perform part cutting, the right ends of the two sides second transmission racks contact the part cutting in place buffers of the corresponding sides, and realize elastic buffering of the part cutting in place.

[0028] The fixing frame is composed of a bottom plate, a front vertical plate and a rear vertical plate vertically fixed to the upper end of the bottom plate, a long slot hole in the up-down direction is arranged on the front vertical plate and the rear vertical plate respectively, a screw matched with the threaded hole arranged on the rack is arranged in the long slot hole, so that the fixing frame is fixedly connected with the rack in the adjustable way in the up-down direction. By adjusting the up-down position of the fixing frame, the cutting position can be adjusted, so that the cutting position of the material pipe is located in the preferable position between the discharge port of the material pipe forming head and the upper end of the mold cavity of the product mold forming mechanism.

[0029] In addition, the connecting plate 14 is fixedly connected to the front end of the fixing frame, the screw through hole is arranged on the connecting plate 14, the threaded hole corresponding to the screw through hole on the connecting plate is arranged on the slide bracket at the position between the two first guide rails 5 close to the rear position, the screw is installed in the screw through hole and the corresponding threaded hole, so that the slide bracket is fixedly connected with the fixing frame in the working position, thereby realizing the fixation of the material pipe cutting and sealing mechanism in the working position.

[0030] The working principle of the material pipe cutting and sealing mechanism on the blow molding production equipment is as follows:

[0031] Before blow molding production, the slide bracket is manually pulled forward to the front working position, so that the cutter position of the two cutter assemblies is aligned with the discharge port position of the upper material pipe forming head. During the blow molding production, the cutting driving cylinder is controlled by the control system of the blow molding production equipment to perform the extension and retraction movement at a set frequency, the movement of the driving cylinder is transmitted to the two cutter assemblies through the meshing transmission of the gear and the double rack, so that when the cylinder rod of the driving cylinder is extended, the two cutter assemblies are driven to complete the cutter alignment, after the cutter alignment is in place, the material pipe is cut off, and the lower end of the cut-off material pipe is pressed by the sealing pressure plates on both sides. When stopping and adjusting the material pipe forming head (mainly adjusting the material amount), the slide bracket is pushed backward, so that the material pipe cutting and sealing mechanism is moved to the rear side position away from the material pipe forming head, thereby facilitating the adjustment of the material pipe forming head.

[0032] Although the embodiments and drawings of the utility model are disclosed for the purpose of illustration, those skilled in the art can understand that various substitutions, changes and modifications are possible without departing from the spirit of the utility model and the appended claims, therefore, the scope of the utility model is not limited to the contents disclosed in the embodiments and drawings.

Claims

1. A tube pair cut seal mechanism for use on a blow molding production apparatus, characterized by: It comprises a fixed frame (1), a sliding table support (2), two cutter assemblies (3) and a cutting driving mechanism. The fixed frame (1) is fixedly installed on the rack of a blow molding production equipment and is located at the rear side position below the material pipe molding head; the fixed frame (1) and the sliding table support (2) are movably connected through linear guide cooperation structure along the front-rear direction on the right side of one face; the left side of the sliding table support (2) is provided with a material passing hole (2.1); The two cutter assemblies (3) are each composed of a cutter seat (3.1), a cutter (3.3) and a sealing pressing plate (3.2); the sealing pressing plate (3.2) and the cutter (3.3) are fixed on the same side of the cutter seat (3.1) and are arranged in an up-down manner; the other face of the sliding table support (2) is fixed with a second guide rail (6) on the left and right sides of the material passing hole (2.1); the two cutter assemblies (3) are connected to the two second guide rails (6) through two second sliding blocks (7), and the two cutter assemblies (3) are arranged in parallel in a left-right manner with the cutting edges opposite to each other; The cutting driving mechanism is connected between the cutter seat (3.1) and the sliding table support (2) and is a driving mechanism for driving the two cutter assemblies (3) to move synchronously and reversely.

2. A tube pair cut seal mechanism for use on a blow molding production apparatus as defined in claim 1, characterized in that: The cutting driving mechanism comprises a cutting driving cylinder (11) and two sets of gear and rack transmission mechanisms; the cutting driving cylinder (11) is fixed on the right side of the other face of the sliding table support (2) with the cylinder rod facing left, and the cylinder rod end is fixedly connected with the right end of the cutter seat (3.1) of the cutter assembly (3) on the right side; each set of gear and rack transmission mechanism comprises a gear (9), a first transmission rack (8) and a second transmission rack (10); the first transmission rack (8) and the second transmission rack (10) are respectively engaged with the outer side and the inner side of the gear (9); the two gears (9) are rotatably installed on the other face of the sliding table support (2) near the front and rear sides through gear mounting seats, the left ends of the two first transmission racks (8) are fixedly connected with the cutter seat (3.1) of the cutter assembly (3) on the left side near the front end and the rear end, and the left ends of the two second transmission racks (10) are fixedly connected with the cutter seat (3.1) of the cutter assembly (3) on the right side near the front end and the rear end; the right part of the first transmission rack (8) and the right part of the second transmission rack (10) are both in penetrating cooperation with the corresponding gear mounting seat.

3. A tube pair cut seal mechanism for use on a blow molding production apparatus as defined in claim 2, characterized in that: The material pipe cutting and sealing mechanism further comprises a cutter alignment buffer (13) and a cutter alignment buffer (12); the cutter alignment buffer (13) and the cutter alignment buffer (12) are both two; a front buffer mounting block and a rear buffer mounting block are vertically and fixedly installed on the other face of the right end of the sliding table support (2), a pair of cutter alignment buffers (13) and a cutter alignment buffer (12) are fixedly installed on the front buffer mounting block and the rear buffer mounting block, the cutter alignment buffer (13) and the cutter alignment buffer (12) are arranged with the buffer heads facing left, and the cutter alignment buffer (13) is arranged at the coaxial position on the right side of the corresponding first transmission rack (8), and the cutter alignment buffer (12) is arranged at the coaxial position on the right side of the corresponding second transmission rack (10).

4. A tube pair cut seal mechanism for use on a blow molding production apparatus as defined in claim 1, wherein: The front end of the fixed frame (1) is fixedly connected with a connecting plate (14), and a screw through hole is arranged on the connecting plate (14). A threaded hole corresponding to the screw through hole on the connecting plate (14) is arranged on the slide table support (2) near the rear position. By installing a screw in the screw through hole and the corresponding threaded hole, the slide table support (2) is fixedly connected with the fixed frame (1) in the working position.

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