1-2 intensive heating bottle blowing machine

Abstract

The invention provides a 1-2 intensive heating bottle blowing machine. The 1-2 intensive heating bottle blowing machine comprises a rack; the device comprises a chain way, a heating lamp box, a mold closing and stretching mechanism, a bottle discharging mechanism and a blank feeding mechanism. The chain way is fixedly arranged on a frame panel of the bottle blowing machine and adopts an inverted-T-shaped structure, and the heating lamp box is arranged above the narrower part of the inverted-T-shaped chain way and is used for intensively heating bottle blanks; and a mold closing and stretching mechanism, a bottle discharging mechanism and a blank feeding mechanism are arranged in the vertical line direction of the U shape of the inverted-T-shaped chain way. The device can greatly reduce the loss of heat energy and improve the heat efficiency. The bottle blowing machine is simple in structure, convenient to operate, capable of achieving heating of bottle blanks of different specifications on the machine and die assembly stretching bottle blowing work, capable of better preventing the bottle interference phenomenon after die assembly, capable of greatly increasing the application range of the bottle blowing machine, capable of further reducing heat energy loss and capable of improving heat efficiency.

Description

Technical Field

[0001] The present invention belongs to the technical field of blow molding machines, and particularly relates to a 1-2 dense heating blow molding machine. Background Art

[0002] Most existing blow molding machines adopt a plastic chain block pushing block mechanism. The chain track is a rectangular mechanism, and the heating lamp box is an ordinary lamp box. The lamp tubes are arranged on one side of the preform, which has disadvantages such as high energy consumption, few heating positions, and uneven heating of the preforms; at the same time, it occupies a large area. Therefore, new and efficient blow molding machines have emerged in the existing market. For example, the Chinese invention patent with the patent number CN202221694183.8 specifically discloses the following components: a frame, a chain track mechanism, a blank feeding mechanism, a return stepping mechanism, a lamp box heating mechanism, a mold clamping and stretching mechanism, a handover variable pitch mechanism, and a bottle discharging stepping mechanism. By setting the chain track as a "b" - shaped mechanism with its vertical section set as a return mechanism, and setting the crank arm part of the mold clamping and stretching device above the arc - shaped mechanism of the "b" - shaped chain track, the length direction of the mold clamping and stretching mechanism is consistent with the vertical section direction, thus greatly reducing the floor space of the whole machine; and by setting the above - mentioned chain track mechanism, the working mode of single - row lamp tubes simultaneously baking both - side preform seats can be realized, reducing the number and power of heating lamp tubes and the loss of heat energy, greatly improving the thermal efficiency of lamp tube heating, and achieving high - efficiency energy saving. However, the blow molding machine described in this patent is a one - out - one type, that is, only one preform can be blown each time the mold is opened and closed, greatly reducing the output of the blow molding machine. Compared with the present one - out - two type patent, it is not suitable for market promotion.

[0003] Therefore, how to provide a one - out - two blow molding machine that not only greatly reduces the loss of heat energy, improves the thermal efficiency, but also can change the preform spacing as needed is one of the technical problems urgently to be solved in this field. Summary of the Invention

[0004] To solve the above problems, the present invention adopts the following technical solutions:

[0005] The present invention provides a 1-2 dense heating blow molding machine, including:

[0006] A frame;

[0007] The chainway is fixedly mounted on the frame; the chainway is in a "convex" shape, and includes a longitudinal single chainway, a longitudinal double chainway, a second transverse variable-pitch chainway, a mold closing chainway and a first transverse variable-pitch chainway connected end to end; the longitudinal double chainway is a bidirectional return chainway, one end of which is connected to the tail of the longitudinal single chainway and the other end is connected to the head of the second transverse chainway; a second variable-pitch mechanism is provided in the middle of the second transverse variable-pitch chainway, thereby dividing the longitudinal single chainway of the second transverse variable-pitch chainway into The first transverse variable-pitch chain path is provided with a first variable-pitch mechanism in the middle, thereby dividing the longitudinal single chain path of the first transverse variable-pitch chain path into a transverse double chain path with a gap; and the tail width of the second variable-pitch mechanism is smaller than the tail width of the first variable-pitch mechanism; the heating lamp box is arranged above the narrower part of the "冂"-shaped "convex" chain path, which is used for intensive heating of the preforms; the mold closing and stretching mechanism, the bottle lowering mechanism and the preform loading mechanism are arranged in the "丨" direction of the "凵"-shaped "convex" chain path;

[0008] A heating light box, the heating light box is arranged above the longitudinal double chain path and is fixedly connected to the frame; a self-rotating mechanism is arranged on the lower side of the interior of the heating light box, and the self-rotating mechanism is located below the longitudinal double chain path, and is used to make the bottle blank seat and the bottle blank of the longitudinal double chain path rotate;

[0009] A mold closing and stretching mechanism, which is arranged above the mold closing chain and fixedly connected to the frame;

[0010] A bottle lowering mechanism, which is arranged at the rear end of the mold clamping chain and is fixedly connected to the frame;

[0011] A blank loading mechanism is arranged on the longitudinal single chain track and fixedly connected to the frame.

[0012] Preferably, the self-rotation mechanism comprises a self-rotation component, a chain and a plurality of guide components; the guide component and the self-rotation component are both arranged on the frame, and the chain is transmission-connected with the self-rotation component and the plurality of guide components.

[0013] Preferably, a blank pushing mechanism is fixedly provided on one side where the tail of the first transverse variable-pitch chain track is connected to the head of the longitudinal single chain track.

[0014] Preferably, the longitudinal double chain track return position is fixedly connected with a steering mechanism; and a blank pushing mechanism is fixedly provided on the outer side of the steering mechanism.

[0015] Preferably, the blank pushing mechanism includes a blank pushing block, a blank pushing motor, a first rack, a fixed seat, a gear, a first connecting plate, and a third sliding guide rail; the fixed seat is fixed on the blow molding machine frame, and a third sliding guide rail is provided at its upper end; the blank pushing motor is fixedly connected to the fixed seat, and its output end extends out of the fixed seat and is in transmission connection with the gear; the lower end of the blank pushing block is slidably connected to the upper end of the fixed seat through the third sliding guide rail, and one end of the blank pushing block away from the blank pushing motor is fixedly connected to the upper end of the first connecting plate; the lower end of the first connecting plate is fixedly connected to the upper end of the first rack; the lower end of the first rack is meshed with the gear.

[0016] Preferably, the steering mechanism includes a turntable for steering the preform seat at the turning-back part of the longitudinal double chain track.

[0017] It further includes a servo motor reducer, a support seat, a third reducer seat, several columns, a second connecting plate, a blank turning chain track, and a preform seat; the servo motor reducer is arranged below the third reducer seat, and its output part passes through the third reducer seat; the support seat is fixedly arranged at the lower part of the third reducer seat so as to be fixedly connected with the machine frame tabletop; the upper surface of the third reducer seat is fixedly connected with the lower surface of the blank turning chain track through several columns; the output end of the servo motor reducer is in transmission connection with the turntable through the second connecting plate; the preform seat is placed in the chain track of the turntable.

[0018] Preferably, a stepping mechanism is arranged below the second transverse variable pitch chain track for horizontally pushing the preform seat from the tail end of the longitudinal double chain track into the second transverse variable pitch chain track, and the pitch between adjacent two preform seats is increased through the pitch variation of the second transverse variable pitch chain track.

[0019] A stepping mechanism is arranged below the first transverse variable pitch chain track for pushing the preform seat from the tail end of the mold closing chain track into the first transverse variable pitch chain track to reduce the pitch between adjacent two preform seats.

[0020] Preferably, the pitch between adjacent two preform seats between leaving the tail of the second transverse variable pitch chain track and entering the first transverse variable pitch chain track is equal to the mold cavity pitch.

[0021] The pitch between adjacent two preform seats between entering the head of the longitudinal single chain track and leaving the longitudinal double chain track is equal to the outer diameter of the bearing of the preform seat.

[0022] Preferably, the first transverse stepping mechanism includes a first fixed plate, a push seat, a first sliding guide rail, a servo motor, a reducer, a first gear, a second rack, a bolt roller and a first reducer seat; the servo motor and the reducer are arranged on one side of the first fixed plate, and the output end thereof passes through the portion of the first fixed plate and is fixedly connected to the first gear; two first sliding guide rails are arranged on the other side surface of the first fixed plate, and the push seat is slidably connected to the top of the first fixed plate through the first sliding guide rails; the second rack is arranged between the two first sliding guide rails, one end of the second rack is fixedly connected to the lower end of the push seat, and the other end is meshed with the first gear; the upper end of the servo motor is transmission-connected to the reducer, and the reducer is fixedly connected to the lower surface of the first fixed plate; the bolt roller is fixedly arranged on the upper surface of the first fixed plate, and is arranged corresponding to the first gear to limit the second rack from offset.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] The above device of the present invention can make the bottle blank move with the bottle blank seat in the "convex" chain path, and the heating lamp box is arranged above the narrow part of the "冂" shape of the "convex" chain path, so as to realize intensive heating of the bottle blank. The mold clamping stretching mechanism, the bottle lowering mechanism and the blank upper mechanism are arranged in the "丨" direction of the "凵" shape of the "convex" chain path. At the light box, the distance of the return chain path is relatively close, and a mechanism of arranging a row of heating lamp tubes in the middle is adopted. At the same time, the spacing between the bottle blanks also adopts a small spacing structure. Compared with the structure of arranging heating lamp tubes on both sides of the chain path, the loss of heat energy is greatly reduced and the thermal efficiency is improved. In addition, the present invention also arranges a self-rotating mechanism under the heating lamp box, which can better heat the whole body of the bottle blank evenly, better improve the thermal efficiency and shorten the heating time. After the bottle blank slides out of the light box with the blank seat, due to the variable distance mechanism adopted by the chain path, the spacing between the two adjacent blank seats is enlarged to the large spacing required by the clamping mechanism to meet the larger spacing after the bottle blank is stretched and formed. The formed bottle is separated from the blank seat at the lower bottle position, and the blank seat after separation is restored to the small spacing at the light box through the distance changing mechanism. Therefore, it is possible to heat, close the mold, stretch and blow the blanks of different specifications on this machine, and it can better prevent the interference of the bottle body after closing the mold, greatly expanding the application range of the bottle blowing machine, and further reducing the loss of heat energy and improving the thermal efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A schematic diagram of the three-dimensional structure of a 1-2 intensive heating bottle blowing machine provided by the present invention;

[0026] Figure 2 A schematic diagram of the structure of the chain path provided by the present invention;

[0027] Figure 3 For the present inventionFigure 2 Enlarged schematic diagram of A in [the invention];

[0028] Figure 4 For the present invention Figure 2 Enlarged schematic diagram of B in [the invention];

[0029] Figure 5 For the present invention Figure 2 Enlarged schematic diagram of C in [the invention];

[0030] Figure 6 For the present invention Figure 2 Structural diagram of the steering mechanism of the longitudinal double tracks in [the invention];

[0031] Figure 7 For the present invention Figure 2 Structural diagram of the second transverse stepping mechanism in [the invention];

[0032] Figure 8 For the present invention Figure 2 Structural diagram of the first transverse stepping mechanism in [the invention];

[0033] Figure 9 For the present invention Figure 2 Structural schematic diagram of the self-rotation mechanism in [the invention];

[0034] Wherein: 1. Upper blank mechanism; 2. Chain path; 201. First transverse variable pitch chain path; 202. Installation position of lower bottle mechanism; 203. Blank pushing mechanism; 204. Longitudinal single chain path; 205. Second transverse variable pitch chain path; 206. Mold closing chain path; 207. Second transverse stepping mechanism; 208. Steering mechanism; 209. Light box heating chain path; 2011. First variable pitch mechanism; 2012. First transverse stepping mechanism; 20121. First fixed plate; 20122. Pushing seat; 20123. First sliding guide rail; 20124. Servo motor; 20125. Reducer; 20126. Gear; 20127. Second rack; 20128. Bolt roller; 20129. First reducer seat; 2031. Blank pushing block; 2032. Blank pushing motor; 2033. First rack; 2034. Fixed seat; 2035. Gear; 2036. First connecting plate; 2037. Third sliding guide rail; 2071. Second fixed plate; 2072. Second sliding guide rail; 2073. Second reducer seat; 2074. Guide rail; 2075. Connecting seat; 2076. Servo motor reducer; 2077. First bearing seat; 2078. Coupling; 2079. Ball screw; 20710. Slide block; 20711. Bearing; 20712. Second bearing seat; 20713. Bearing gland; 2081. Servo motor reducer; 2082. Support seat; 2083. Third reducer seat; 2084. Column; 2085. Second connecting plate; 2086. Turntable; 2087. Blank turning chain path; 2088. Bottle blank seat; 2089. Bottle blank; 3. Heating light box; 4. Handover mechanism; 5. Mold closing and stretching mechanism; 6. Lower bottle mechanism; 7. Frame; 8. Self-rotation mechanism; 801. Steering wheel; 802. Guide wheel shaft; 803. Guide shaft; 804. Self-rotation vertical plate; 805. Guide block; 806. Elastic member; 807. Movable plate; 808. Self-rotation sprocket. Detailed implementation mode

[0035] Embodiment 1

[0036] Reference Figures 1-9The 1-2 intensive heating bottle blowing machine shown in the figure comprises: a frame 7, a chain path 2, a heating lamp box 3, a mold clamping and stretching mechanism 5, a bottle lowering mechanism 6 and a blank loading mechanism 1; the chain path 2 is fixedly installed on the frame 7; the chain path 2 is "convex" shaped, comprising a longitudinal single chain path 204, a longitudinal double chain path 209, a second transverse variable-pitch chain path 205, a mold clamping chain path 206 and a first transverse variable-pitch chain path 201 connected end to end in sequence; the longitudinal double chain path 209 is a bidirectional return chain path, one end of which is connected to the tail of the longitudinal single chain path 204, and the other end is connected to the head of the second transverse chain path 205; a second variable-pitch mechanism is arranged in the middle of the second transverse variable-pitch chain path 205, thereby dividing the longitudinal single chain path of the second transverse variable-pitch chain path 205 into a transverse double chain path with a gap; the first transverse variable-pitch chain path 20 1 is provided with a first pitch-changing mechanism in the middle, so as to divide the longitudinal single chain path of the first transverse pitch-changing chain path 201 into a transverse double chain path with a gap; and the tail width of the second pitch-changing mechanism 501 is smaller than the tail width of the first pitch-changing mechanism 2011; the heating lamp box 3 is arranged above the longitudinal double chain path 209 and is fixedly connected to the frame 7; and a self-rotation mechanism 8 is arranged on the lower side of the heating lamp box 3, and the self-rotation mechanism 8 is located below the longitudinal double chain path 209, which is used to make the bottle blank seat and the bottle blank of the longitudinal double chain path 209 rotate; the mold clamping stretching mechanism 5 is arranged above the mold clamping chain path 206 and is fixedly connected to the frame 7; the bottle lowering mechanism 6 is arranged at the tail end position of the mold clamping chain path 206 and is fixedly connected to the frame 7; the blank loading mechanism 1 is arranged on the longitudinal single chain path 204 and is fixedly connected to the frame 7.

[0037] As a preferred or optional mode of this embodiment, the self-rotation mechanism 8 includes a self-rotation component, a chain and a plurality of guide components; the guide component and the self-rotation component are both arranged on the frame 7, and the chain is transmission-connected with the self-rotation component and the plurality of guide components.

[0038] As a preferred or optional mode of this embodiment, the self-rotation assembly includes two self-rotation upright plates 804, two guide shafts 803, two guide blocks 805, two elastic members 806, a movable plate 807 and a self-rotation sprocket 808; the two self-rotation upright plates 804 are relatively arranged on the frame 7, and the two guide shafts 803 are fixedly connected between the two self-rotation upright plates 804; the two guide blocks 805, the two elastic members 806 and the movable plate 807 are respectively and correspondingly penetrated on the two guide shafts 803, one end of the guide shaft 803 is arranged close to one self-rotation upright plate 804, and the movable plate 807 is arranged close to the other self-rotation upright plate 804; the self-rotation sprocket 808 is arranged between the two guide blocks 805.

[0039] As a preferred or optional method of this embodiment, the guide assembly includes a fixed plate, a guide wheel shaft 802 and a steering wheel 801; the fixed plate is fixedly installed on the frame 7, the lower end of the guide wheel shaft 802 is fixedly connected to the fixed plate, and the upper end of the guide wheel shaft 802 is movably connected to the steering wheel 801.

[0040] As a preferred or alternative embodiment of this example, a blank pushing mechanism 203 is fixedly arranged on one side where the tail of the first transverse variable pitch chain track 201 is connected to the head of the longitudinal single chain track 204.

[0041] As a preferred or alternative embodiment of this example, a steering mechanism 208 is fixedly connected to the turning-back position of the longitudinal double chain track 209; a blank pushing mechanism 203 is fixedly arranged on the outer side of the steering mechanism 208.

[0042] As a preferred or alternative embodiment of this example, the blank pushing mechanism 203 includes a blank pushing block 2031, a blank pushing motor 2032, a first rack 2033, a fixed seat 2034, a gear 2035, a first connecting plate 2036 and a third sliding guide rail 2037; the fixed seat 2034 is fixed on the blowing bottle machine frame, and a third sliding guide rail 2037 is arranged at its upper end; the blank pushing motor 2032 is fixedly connected to the fixed seat 2034, and its output end extends out of the fixed seat 2034 and is in transmission connection with the gear 2035; the lower end of the blank pushing block 2031 is slidably connected to the upper end of the fixed seat 2034 through the third sliding guide rail 2037, and one end of the blank pushing block 2031 far from the blank pushing motor 2032 is fixedly connected to the upper end of the first connecting plate 2036; the lower end of the first connecting plate 2036 is fixedly connected to the upper end of the first rack 2033; the lower end of the first rack 2033 is meshed with the gear 2035.

[0043] As a preferred or alternative embodiment of this example, the steering mechanism 208 includes a turntable 2086 for turning the bottle blank seat at the turning-back part of the longitudinal double chain track 209; it also includes a servo motor speed reducer 2081, a support seat 2082, a third speed reducer seat 2083, several columns 2084, a second connecting plate 2085, a blank turning chain track 2087 and a blank seat 2088; the servo motor speed reducer 2081 is arranged at the lower part of the third speed reducer seat 2083 and its output part passes through the third speed reducer seat 2083; a support seat 2082 is fixedly arranged at the lower part of the third speed reducer seat 2083 to be fixedly connected with the machine frame tabletop; the upper surface of the third speed reducer seat 2083 is fixedly connected to the lower surface of the blank turning chain track 2087 through several columns 2084; the output end of the servo motor speed reducer 2081 is in transmission connection with the turntable 2086 through the second connecting plate 2085; the blank seat 2088 is placed in the chain track of the turntable 2086.

[0044] As a preferred or alternative embodiment of this example, a stepping mechanism 207 is arranged below the second transverse variable pitch chain track 205 for horizontally pushing the bottle blank seat from the tail end of the longitudinal double chain track 209 into the second transverse variable pitch chain track 205, and the distance between adjacent two bottle blank seats is increased through the variable pitch of the second transverse variable pitch chain track 205; a stepping mechanism 207 is arranged below the first transverse variable pitch chain track 201 for pushing the bottle blank seat from the tail end of the mold closing chain track 206 into the first transverse variable pitch chain track 201 to reduce the distance between adjacent two bottle blank seats.

[0045] As a preferred or optional mode of this embodiment, the distance between two adjacent preform seats after leaving the tail of the second lateral variable pitch track 205 and before entering the first lateral variable pitch track 201 is equal to the mold cavity pitch; the distance between two adjacent preform seats after entering the head of the longitudinal single track 204 and before leaving the longitudinal double track 209 is equal to the outer diameter of the bearing of the preform seat.

[0046] As a preferred or optional mode of this embodiment, the first lateral stepping mechanism 2012 includes a first fixing plate 20121, a pushing seat 20122, a first sliding guide rail 20123, a servo motor 20124, a speed reducer 20125, a first gear 20126, a second rack 20127, a bolt roller 20128 and a first speed reducer seat 20129; the servo motor 20124 and the speed reducer 20125 are disposed through one side of the first fixing plate 20121, and the part where the output end penetrates through the first fixing plate 20121 is fixedly connected to the first gear 20126; two first sliding guide rails 20123 are provided on the other surface of the first fixing plate 20121, and the pushing seat 20122 is slidably connected above the first fixing plate 20121 through the first sliding guide rail 20123; the second rack 20127 is disposed between the two first sliding guide rails 20123, one end of the second rack 20127 is fixedly connected to the lower end of the pushing seat 20122, and the other end is meshed and connected to the first gear 20126; the upper end of the servo motor 20124 is drivingly connected to the speed reducer 20125, and the speed reducer 20125 is fixedly connected to the lower surface of the first fixing plate 20121; the bolt roller 20128 is fixedly disposed on the upper surface of the first fixing plate 20121 and is arranged corresponding to the first gear 20126 for restricting the second rack 20127 from generating offset.

[0047] As a preferred or optional mode of this embodiment, the second lateral stepping mechanism 7 includes a second fixed plate 2071, two second sliding channels 2072 arranged on the second fixed plate 2071, a second motor base 2073, a sliding seat 2074, a connecting seat 2075, a servo motor 2076, a first bearing seat 2077, a coupling 2078, a ball screw 2079, a sliding seat 710, a bearing 711, a second bearing seat 712 and a bearing gland 713; the front end of the connecting seat 2075 is fixedly connected to the sliding seat 2074, the sliding seat 2074 is slidably connected to the second fixed plate 2071 through the sliding channel 2072, the connecting seat 2075 penetrates through the second fixed plate 2071 and is fixedly connected to the sliding seat 710 below the second fixed plate 2071; the lower part of one end of the second fixed plate 2071 away from the connecting seat 2075 is fixedly connected to the second motor base 2073, the servo motor 2076 is fixedly arranged in the middle of the second motor base 2073, the output end of the servo motor 2076 is drivingly connected to one end of the ball screw 2079 through the coupling 2078, the ball screw 2079 is rotatably connected to the side of the second fixed plate 2071 away from the servo motor 2076 through the first bearing seat 2077 and the second bearing seat 20712, and the bearing 20711 is arranged in the first bearing seat 2077; the bearing 20711 is also arranged in the second bearing seat 712; when the servo motor 2076 is started, the output shaft drives the ball screw 2079 to rotate, and the rotation of the ball screw 2079 drives the sliding seat 20710 to move reciprocally, driving the preform seat connected in the notch above the sliding seat 2074 to move reciprocally along the direction of the sliding channel 2072.

[0048] The operating principle of the chain track assembly for the one-out-two bottle blowing machine of the present invention is as follows: After passing through the lower bottle mechanism, the preform seat enters the first transverse variable pitch chain track under the action of the first transverse stepping mechanism. The first transverse variable pitch chain track is divided into a double chain track by the first variable pitch mechanism. At the head of the chain track, the center distance between the double chain tracks is equal to the cavity spacing of the mold, i.e., the large spacing. At the tail of the first transverse variable pitch chain track, the spacing between the double chain tracks is equal to the outer diameter of the bearing of the preform seat, i.e., the small spacing. The tail of the first transverse variable pitch chain track is connected to the longitudinal single chain track. Driven by the first transverse stepping mechanism, the two rows of preform seats enter the longitudinal single chain track simultaneously through the first transverse variable pitch chain track. Driven by the preform pushing mechanism, the preform seat steps into the longitudinal double chain track in the longitudinal single chain track. At about the middle position of the longitudinal single chain track, the preform is placed on the preform seat by the upper preform mechanism and enters the chain track. At the light box, the outer chain track and the returning inner chain track share one side chain track strip, narrowing the spacing between the outer and inner chain tracks to ensure the minimum distance between the preforms in the chain tracks, so as to facilitate arranging a single row of lamp tubes above the shared chain track strip to heat the preforms on both sides. At the same time, a steering mechanism and a preform pushing mechanism are provided at the turning part of the longitudinal double chain track. The steering mechanism is used to turn the direction of the preform seat, and the preform pushing mechanism is used to make the turned preform seat step in the return direction of the longitudinal double chain track. When the preform seat moves to the exit of the light box, it enters the second transverse variable pitch chain track under the push of the second transverse stepping mechanism. At the head of the second transverse variable pitch chain track, the distance between the preform seats is equal to the outer diameter of the bearing of the preform seat (i.e., the small spacing). At the tail of the second transverse variable pitch chain track, the spacing between the preform seats is equal to the cavity spacing of the mold (i.e., the large spacing). Driven by the second transverse stepping mechanism, the preform seat steps into the mold closing chain track. The head of the mold closing chain track is connected to the second transverse variable pitch chain track, and the tail is connected to the first transverse variable pitch chain track. Driven by the mold closing and handover mechanism, the preform slides to the sealing cylinder of the mold closing mechanism, and the stretch blow molding is completed according to the bottle blowing process. The blown finished bottles are then moved to the lower bottle station at the tail end of the mold closing chain track by the handover mechanism to complete the lower bottle operation, realizing the separation of the finished bottles from the bottle blowing machine.

[0049] The above device of the present invention can make the bottle blank move with the bottle blank seat in the "convex" chain path. At the light box, the distance of the return chain path is relatively close, and a mechanism of arranging a row of heating lamps in the middle is adopted. At the same time, the spacing between the bottle blanks is also a structure of small spacing. Compared with the structure of arranging heating lamps on both sides of the chain path, the loss of heat energy is greatly reduced and the thermal efficiency is improved. In addition, the present invention is preferably provided with a self-rotating mechanism below the heating lamp box, which can better allow the whole body of the bottle blank to be heated evenly, better improve the thermal efficiency and shorten the heating time. After the bottle blank slides out of the light box with the blank seat, due to the variable distance mechanism adopted by the chain path, the spacing between the two adjacent blank seats is enlarged to the large spacing required by the mold clamping mechanism to meet the larger spacing after the bottle blank is stretched and formed. The formed bottle is separated from the blank seat at the lower bottle, and the separated blank seat is restored to the small spacing at the light box through the variable distance mechanism. Therefore, the heating and mold clamping stretching and blowing of bottles of different specifications can be realized on this machine, and the interference phenomenon of the bottle body after the mold clamping can be better prevented, which greatly increases the application range of the bottle blowing machine, and further reduces the loss of heat energy and improves the thermal efficiency.

[0050] The above description is only a preferred embodiment of the present invention and does not limit the technical scope of the present invention. Therefore, any slight modification, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A 1-2 intensive heating bottle blowing machine, characterized in that: Comprising: A frame (7); A chain track (2), the chain track (2) being fixedly installed on the frame (7); the chain track (2) is in a "convex" shape, including a longitudinal single-chain track (204), a longitudinal double-chain track (209), a second transverse variable-pitch chain track (205), a mold-closing chain track (206) and a first transverse variable-pitch chain track (201) connected end to end in sequence; the longitudinal double-chain track (209) is a bidirectional return chain track, one end of which is connected to the tail of the longitudinal single-chain track (204), and the other end is connected to the head of the second transverse chain track (205); a second variable-pitch mechanism is provided in the middle of the second transverse variable-pitch chain track (205), so as to separate the longitudinal single-chain track of the second transverse variable-pitch chain track (205) into a transverse double-chain track with a gap; a first variable-pitch mechanism is provided in the middle of the first transverse variable-pitch chain track (201), so as to separate the longitudinal single-chain track of the first transverse variable-pitch chain track (201) into a transverse double-chain track with a gap; and the width of the tail of the second variable-pitch mechanism is smaller than the width of the tail of the first variable-pitch mechanism (2011); above the narrower part of the "冂" shape of the "convex" chain track, the heating lamp box is arranged for intensive heating of the preforms; the mold-closing and stretching mechanism, the lower bottle mechanism and the upper preform mechanism are arranged in the "丨" direction of the "凵" shape of the "convex" chain track. A heating lamp box (3), the heating lamp box (3) being arranged above the longitudinal double-chain track (209) and fixedly connected to the frame (7); and a self-rotation mechanism (8) is provided on the lower side inside the heating lamp box (3), and the self-rotation mechanism (8) is located below the longitudinal double-chain track (209) for rotating the preform seat (2088) and the preform (2089) on the longitudinal double-chain track (209). A mold-closing and stretching mechanism (5), the mold-closing and stretching mechanism (5) being arranged above the mold-closing chain track (206) and fixedly connected to the frame (7); A lower bottle mechanism (6), the lower bottle mechanism (6) being arranged at the tail end of the mold-closing chain track (206) and fixedly connected to the frame (7); An upper preform mechanism (1), the upper preform mechanism (1) being arranged on the longitudinal single-chain track (204) and fixedly connected to the frame (7).

2. A 1-2 intensive heating bottle blowing machine according to claim 1, characterized in that: The self-rotation mechanism (8) includes a self-rotation component, a chain and a plurality of guiding components; the guiding components and the self-rotation component are both arranged on the frame (7), and the chain is in transmission connection with the self-rotation component and the plurality of guiding components.

3. A 1-2 intensive heating bottle blowing machine according to claim 1, characterized in that: On one side where the tail of the first transverse variable-pitch chain track (201) is connected to the head of the longitudinal single-chain track (204), a preform pushing mechanism (203) is fixedly provided.

4. A 1-2 intensive heating bottle blowing machine according to claim 1, characterized in that: A turning mechanism (208) is fixedly connected to the return position of the longitudinal double-chain track (209); a preform pushing mechanism (203) is fixedly provided on the outside of the turning mechanism (208).

5. A 1-2 intensive heating bottle blowing machine according to claim 3 or 4, characterized in that: The blank pushing mechanism (203) comprises a blank pushing block (2031), a blank pushing motor (2032), a first rack (2033), a fixed seat (2034), a gear (2035), a first connecting plate (2036) and a third sliding guide rail (2037); the fixed seat (2034) is fixed on the bottle blowing machine frame, and the third sliding guide rail (2037) is provided on the upper end thereof; the blank pushing motor (2032) is fixedly connected to the fixed seat (2034), and the output end thereof protrudes from the fixed seat (2034) and is connected to the fixed seat (2034). The gear (2035) is transmission connected; the lower end of the pushing block (2031) is slidably connected to the upper end of the fixed seat (2034) through the third sliding guide rail (2037), and the end of the pushing block (2031) away from the pushing motor (2032) is fixedly connected to the upper end of the first connecting plate (2036); the lower end of the first connecting plate (2036) is fixedly connected to the upper end of the first rack (2033); the lower end of the first rack (2033) is meshingly connected to the gear (2035).

6. A 1-2 intensive heating bottle blowing machine according to claim 4, characterized in that: The steering mechanism (208) comprises a turntable (2086) for steering the preform seat at the turning point of the longitudinal double chain path (209); The bottle body also includes a servo motor reducer (2081), a support seat (2082), a third reducer seat (2083), a plurality of columns (2084), a second connecting plate (2085), a blank transfer chain (2087) and a bottle blank seat (2088); the servo motor reducer (2081) is arranged at the lower part of the third reducer seat (2083) and its output part passes through the third reducer seat (2083); the lower part of the third reducer seat (2083) The support seat (2082) is fixedly arranged so as to be fixedly connected to the frame table; the upper surface of the third reducer seat (2083) is fixedly connected to the lower surface of the blank transfer chain path (2087) through a plurality of the uprights (2084); the output end of the servo motor reducer (2081) is transmission-connected to the turntable (2086) through the second connecting plate (2085); and the blank seat (2088) is placed in the chain path of the turntable (2086).

7. A 1-2 intensive heating bottle blowing machine according to claim 1, characterized in that: A second stepping mechanism (207) is provided below the second transverse variable-pitch chain path (205) for pushing the preform seat transversely from the rear end of the longitudinal double chain path (209) into the second transverse variable-pitch chain path (205), so that the distance between two adjacent preform seats is increased through the variable-pitch second transverse variable-pitch chain path (205); A first transverse stepping mechanism (2012) is arranged below the first transverse variable-pitch chain path (201) for pushing the preform seat from the rear end of the mold clamping chain path (206) into the first transverse variable-pitch chain path (201) to reduce the distance between two adjacent preform seats.

8. A 1-2 intensive heating bottle blowing machine according to claim 7, characterized in that: The distance between two adjacent preform seats after leaving the tail of the second transverse variable-pitch chain path (205) and before entering the first transverse variable-pitch chain path (201) is equal to the mold cavity distance; The distance between two adjacent bottle preform seats after entering the head of the longitudinal single chain path (204) and before leaving the longitudinal double chain path (209) is equal to the outer diameter of the bearing of the bottle preform seat.

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