Distance changing device for bottle blowing machine and distance expanding mechanism of distance changing device

Abstract

The utility model provides a bottle blowing machine's pitch changing device and the pitch expanding mechanism thereof, including the pitch expanding support, stop push plate and pitch expanding drive piece, the pitch expanding support is provided with feed channel and output channel in parallel, be provided with at least two pitch dividing channel between feed channel and output channel, stop push plate and pitch expanding support slip connection, stop push plate and pitch expanding support slip connection. The output end of the distance expanding driving piece is connected with the material blocking push plate, and when the distance expanding driving piece drives the material blocking push plate to move from the feeding channel to the output channel, the material blocking push plate pushes the bottle blank bases, opposite to the distance dividing channel, in the feeding channel to enter the output channel through the corresponding feeding channel so that the distance between the bottle blank bases can be increased. And the material blocking push plate blocks the bottle blank seat which is staggered with the distance separation channel in the feeding channel. The distance expanding mechanism is only composed of the distance expanding support, the material blocking push plate and the distance expanding driving piece, the number of movable structures is small, errors and abrasion generated in the operation process are small, and the distance expanding mechanism has the advantage of being high in reliability.

Description

Technical Field

[0001] The utility model relates to accessories for a bottle blowing machine, in particular to a distance-changing device and a distance-expanding mechanism thereof for a bottle blowing machine. Background Art

[0002] Currently, Chinese patent publication number CN115179529A discloses a rapid-spacing bottle blowing machine, comprising a frame equipped with a heating device, a spacing device, and a blowing device. The spacing device receives preforms from the heating device and, after the spacing operation, delivers them to the blowing device for blowing into bottle bodies. The spacing device includes a hinge assembly that reciprocates and extends under the drive of a spacing driver. The hinge assembly is provided with multiple hinged sections that reciprocate along a linear path and are arranged equidistantly. Adjacent hinged sections located in the middle of the hinge assembly form a fixed section and a movable section, respectively. When the spacing driver pushes the movable section along the linear path, the two ends of the hinge assembly synchronously extend and retract about the fixed section, adjusting the distance between adjacent hinged sections to shorten the duration of a single spacing operation of the hinge assembly. However, the spacing device has a large number of movable hinge components, which can cause cumulative errors and wear during operation, resulting in poor reliability. Summary of the Invention

[0003] In view of this, the first object of the present invention is to provide a distance expansion mechanism, which has the advantage of high reliability.

[0004] The discharging opening that stirs cage connects with the delivery chute charging aperture, and the delivery chute discharging opening is equipped with a toothed connection portion for receiving the discharging opening of the second end of the second end of the second end of the second end.

[0005] According to the above technical solution, during use, a preform holder, with a preform sleeved on its upper end, is driven by a conveyor belt or other power mechanism to enter the feed channel, maintaining the preform holders within the feed channel in a sequentially abutting relationship. A distance expansion drive element drives a material blocking push plate from one side of the feed channel toward the other. During this process, the material blocking push plate pushes the preform holders in the feed channel opposite the spacing channel through the corresponding feed channel into the output channel, thereby increasing the spacing between the preform holders and achieving distance expansion. Simultaneously, the material blocking push plate blocks preform holders in the feed channel that are misaligned with the spacing channel. The distance expansion drive element drives the material blocking push plate from the output channel toward the feed channel. When the material blocking push plate is misaligned with a preform holder in the feed channel, the preform holder at the front of the feed channel, pushed by the subsequent preform holder, is pushed deeper into the feed channel until the preform holder contacts the end of the feed channel. At this point, preparations for the next distance expansion are complete.

[0006] The above-mentioned expansion mechanism is only composed of an expansion bracket, a material blocking push plate and an expansion drive component, wherein there are fewer movable structures, and the errors and wear generated during operation are less, and it has the advantage of higher reliability.

[0007] Preferably, the feed channel is provided with an avoidance opening on the side away from the output channel, the material blocking push plate is located above the expansion bracket, and the lower end of the material blocking push plate is provided with a connecting bracket, and the lower end of the connecting bracket passes through the avoidance opening and is connected to the output end of the expansion drive component.

[0008] With this technical solution, the blocking push plate is positioned above the output channel. This prevents it from colliding with the lower end of the preform holder during reset, resulting in smoother operation. A clearance opening is provided on the side of the feed channel away from the output channel to accommodate the lower end of the connecting bracket, minimizing impact on the feed process of the preform holder.

[0009] Preferably, a limiting notch is provided at the lower end of the material blocking push plate near the output channel. When the upper end of the preform seat moves into the limiting notch, the upper end of the material blocking push plate near the output channel will limit the preform seat from jumping upward.

[0010] With the above technical solution, the blocking push plate can limit the upward lifting of the bottle preform seat through the limiting notch, so that the bottle preform is not easily separated from the upper end of the bottle preform seat.

[0011] Preferably, the expansion drive member includes a fixed seat, a sliding seat and a driving element, a slide rail is provided at the upper end of the fixed seat, the slide rail extends from the feed channel to the output channel, the sliding seat is slidingly connected to the fixed seat through the slide rail, and an accommodating opening for the bottle preform seat to move into is provided at the upper end of the sliding seat, and the accommodating opening is parallel to the feed channel, and the output end of the driving element is connected to the lower end of the sliding seat to drive the sliding seat to slide along the slide rail.

[0012] With the above technical solution, when the driving element is activated, it drives the blocking push plate to move via the sliding seat. The receiving opening is used to allow the lower end of the preform seat to move in. During the movement of the sliding seat, the sliding seat can apply a force to the lower end of the preform seat through the inner wall of the receiving opening, making the movement of the preform seat smoother.

[0013] Preferably, the driving element includes a servo motor arranged at the lower end of the fixed seat, a driving pulley rotatably connected to the upper end of the fixed seat, a driven pulley rotatably connected to the upper end of the fixed seat, and a transmission belt tensioned between the driving pulley and the driven pulley, the output end of the servo motor passes upward through the fixed seat and is coaxially connected to the driving pulley, the driving pulley and the driven pulley are arranged on both sides of the moving direction of the sliding seat, and the sliding seat is fixedly connected to the transmission belt.

[0014] Through the above technical solution, when the servo motor is turned on, it will drive the driving pulley to rotate circumferentially, and the driving pulley will drive the sliding seat to slide along the length direction of the slide rail through the driven pulley and the transmission belt.

[0015] Preferably, the fixed seat includes a fixed plate, a sliding plate and an adjustment unit, the output end of the adjustment unit is connected to the sliding plate to drive the sliding plate towards or away from the fixed plate, the servo motor and the driving pulley are both installed on the fixed plate, and the driven pulley is installed on the sliding plate.

[0016] With the above technical solution, the sliding plate can be driven away from the fixed plate by the adjusting unit during use to ensure that the transmission belt is in a tensioned state.

[0017] Preferably, a guide groove is provided at the end of the fixed plate close to the sliding plate, and the guide groove extends along the length direction of the slide rail. A guide block is provided at the end of the sliding plate close to the fixed plate, and the guide block is slidably connected in the guide groove.

[0018] Through the above technical solution, the guide groove and the guide block cooperate with each other to limit and guide the sliding of the sliding plate.

[0019] Preferably, the adjustment unit includes an adjustment seat and an adjustment bolt, a threaded section of the adjustment bolt passes through the adjustment seat and is threadedly connected to the adjustment seat, and an end portion of the adjustment bolt is rotatably connected to the sliding plate.

[0020] With the above technical solution, when in use, it is only necessary to rotate the adjusting bolt to control the sliding plate to slide along the length direction of the slide rail.

[0021] Preferably, a limiting plate is provided on the side of the sliding seat away from the material blocking push plate.

[0022] Through the above technical solution, the distance between the limit plate and the material blocking push plate is small, which can clamp the bottle blank seat with a smaller size, thereby improving the applicability of the above distance expansion mechanism.

[0023] The second object of the utility model is to provide a pitch changing device for a bottle blowing machine, which has the advantage of high reliability.

[0024] The technical solution of the present utility model is: a pitch-changing device for a bottle blowing machine, comprising a front acceleration track, the above-mentioned distance-expanding mechanism, a transfer track and a rear acceleration track which are arranged in sequence, a front conveyor belt being provided at the lower end of the front acceleration track, the front conveyor belt being used to drive the bottle preform seat to accelerate and approach the feed channel, a molding station, a discharge station and a loading station being arranged in sequence on the transfer track, a rear conveyor belt being provided at the lower end of the rear acceleration track, the rear conveyor belt being used to drive the bottle preform seat to accelerate and move away from the loading station, and a transmission chain being further included, a plurality of clamping assemblies being distributed at equal intervals on the transmission chain, the plurality of said clamping assemblies being used to drive the bottle preform seat to flow between the distance-expanding mechanism, the molding station, the discharge station and the loading station.

[0025] With this technical solution, the front conveyor accelerates the preform holders toward the feed channel, ensuring a sufficient number of preform holders in the channel and that they are tightly packed together. The rear conveyor accelerates the preform holders away from the loading station, ensuring that a sufficient number of preforms can be heated during the subsequent heating process. The conveyor chain maintains a stable flow of preform holders between the expansion mechanism, forming station, unloading station, and loading station. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the structure of embodiment 1 Figure 1 ;

[0027] Figure 2 This is a schematic diagram of the structure of embodiment 1 Figure 2 ;

[0028] Figure 3 This is a structural diagram of Example 2;

[0029] Figure 4 This is a schematic diagram of the structure of embodiment 3 Figure 1 ;

[0030] Figure 5 This is a schematic diagram of the structure of embodiment 3 Figure 2 .

[0031] Reference numerals: 1, expansion bracket; 2, material blocking push plate; 3, expansion drive member; 31, fixed seat; 32, sliding seat; 33, driving element; 331, servo motor; 332, driving pulley; 333, driven pulley; 334, transmission belt; 4, feed channel; 5, output channel; 6, spacing channel; 7, avoidance opening; 8, connecting bracket; 9, embedded groove; 10, limiting notch; 11, slide rail; 12, receiving opening; 13 , front acceleration track; 14, transfer track; 15, rear acceleration track; 16, front conveyor belt; 17, forming station; 18, unloading station; 19, loading station; 20, rear conveyor belt; 21, transmission chain; 22, clamping assembly; 311, fixed plate; 312, sliding plate; 313, adjustment unit; 3131, adjustment seat; 3132, adjustment bolt; 23, guide groove; 24, guide block; 25, limit plate. Implementation Method

[0032] The specific implementation methods of the present invention are further described below in conjunction with the accompanying drawings to make the technical solutions of the present invention easier to understand and grasp. Example

[0033] A distance expansion mechanism, such as Figure 1 、 Figure 2 As shown, it includes an expansion bracket 1, a material blocking push plate 2 and an expansion drive component 3.

[0034] A feed channel 4 and an output channel 5 are provided in parallel on the telescope bracket 1. In this embodiment, the left end of the feed channel 4 is open and extends through the telescope bracket 1, while the right end of the feed channel 4 is blocked. The left end of the output channel 5 is blocked, while the right end of the output channel 5 is open and extends through the telescope bracket 1.

[0035] At least two spacing channels 6 are provided between the feed channel 4 and the output channel 5, and the distance between adjacent spacing channels 6 gradually increases from the feed channel 4 toward the output channel 5. In this embodiment, there are two spacing channels 6. The front end of the left spacing channel 6 is connected to the middle of the feed channel 4, and the rear end of the left spacing channel 6 is connected to the left end of the output channel 5. The front end of the right spacing channel 6 is connected to the right end of the feed channel 4, and the rear end of the right spacing channel 6 is connected to the middle of the output channel 5.

[0036] The blocking push plate 2 is slidably connected to the expansion bracket 1, and the output end of the expansion drive 3 is connected to the blocking push plate 2. When the expansion drive 3 drives the blocking push plate 2 to move from the feed channel 4 to the output channel 5, the blocking push plate 2 pushes the preform seats in the feed channel 4 that are opposite the spacing channel 6 through the corresponding feed channel 4 into the output channel 5 to increase the spacing between the preform seats. The blocking push plate 2 also blocks the preform seats in the feed channel 4 that are misaligned with the spacing channel 6.

[0037] A clearance opening 7 is provided on the side of the feed channel 4 away from the output channel 5. The material blocking push plate 2 is located above the expansion bracket 1. A connecting bracket 8 is provided at its lower end. The lower end of the connecting bracket 8 passes through the clearance opening 7 and connects to the output end of the expansion drive 3. A recess 9 is provided at the lower end of the material blocking push plate 2, into which the upper end of the connecting bracket 8 is embedded.

[0038] A limiting notch 10 is provided at the lower end of the blocking push plate 2 near the output channel 5. When the upper end of the preform seat moves into the limiting notch 10, the upper end of the blocking push plate 2 near the output channel 5 will limit the preform seat from jumping upward.

[0039] The expansion drive 3 comprises a fixed base 31, a sliding base 32, and a driving element 33. A slide rail 11 is mounted on the upper end of the fixed base 31, extending from the feed channel 4 to the output channel 5. The sliding base 32 is slidably connected to the fixed base 31 via the slide rail 11. A receiving opening 12 for the preform holder is defined at the upper end of the sliding base 32, parallel to the feed channel 4. The output end of the driving element 33 is connected to the lower end of the sliding base 32, driving the sliding base 32 to slide along the slide rail 11.

[0040] The driving element 33 includes a servo motor 331 arranged at the lower end of the fixed seat 31, a driving pulley 332 rotatably connected to the upper end of the fixed seat 31, a driven pulley 333 rotatably connected to the upper end of the fixed seat 31, and a transmission belt 334 tensioned between the driving pulley 332 and the driven pulley 333. The output end of the servo motor 331 passes upward through the fixed seat 31 and is coaxially connected to the driving pulley 332. The driving pulley 332 and the driven pulley 333 are respectively arranged on both sides of the moving direction of the sliding seat 32, and the sliding seat 32 is fixedly connected to the transmission belt 334. Example

[0041] The difference between the second embodiment and the first embodiment is that Figure 3 As shown, the fixed base 31 includes a fixed plate 311, a sliding plate 312, and an adjustment unit 313. The output end of the adjustment unit 313 is connected to the sliding plate 312 to drive the sliding plate 312 toward or away from the fixed plate 311. The servo motor 331 and the driving pulley 332 are both mounted on the fixed plate 311, and the driven pulley 333 is mounted on the sliding plate 312.

[0042] A guide groove 23 is provided at the end of the fixed plate 311 close to the sliding plate 312 . The guide groove 23 extends along the length direction of the slide rail 11 . A guide block 24 is provided at the end of the sliding plate 312 close to the fixed plate 311 . The guide block 24 is slidably connected in the guide groove 23 .

[0043] The adjusting unit 313 includes an adjusting seat 3131 and an adjusting bolt 3132 . The threaded section of the adjusting bolt 3132 passes through the adjusting seat 3131 and is threadedly connected to the adjusting seat 3131 . The end of the adjusting bolt 3132 is rotatably connected to the sliding plate 312 .

[0044] A limiting plate 25 is provided on the side of the sliding seat 32 away from the material blocking push plate 2 , and the side of the limiting plate 25 close to the sliding seat 32 extends to above the limiting notch 10 , so that the distance between the limiting plate 25 and the material blocking push plate 2 is smaller than the width of the limiting notch 10 . Example

[0045] A pitch-changing device for a bottle blowing machine, such as Figure 4 、 Figure 5 As shown, the system comprises a front acceleration track 13, a distance expansion mechanism as described in Example 1, a transfer track 14, and a rear acceleration track 15, which are arranged in sequence. The discharge port of the front acceleration track 13 is connected to the feed port of the feed channel 4. A front conveyor belt 16 is provided at the lower end of the front acceleration track 13, which is used to accelerate the preform holder toward the feed channel 4. The feed port of the transfer track 14 is connected to the discharge port of the output channel 5. A forming station 17, a discharge station 18, and a loading station 19 are sequentially arranged on the transfer track 14. The spacing between the output channel 5 and the forming station 17, the spacing between the forming station 17 and the discharge station 18, and the spacing between the discharge station 18 and the loading station 19 are all the same. The feed port of the rear acceleration track 15 is connected to the discharge port of the transfer track 14. A rear conveyor belt 20 is installed at the lower end of the rear acceleration track 15. This conveyor belt 20 accelerates the preform holder away from the loading station 19. The conveyor chain 21 also includes a plurality of evenly spaced clamping assemblies 22. These clamping assemblies 22 are used to move the preform holder between the expansion mechanism, the forming station 17, the unloading station 18, and the loading station 19. In this embodiment, the number of clamping assemblies 22 exceeds the number of stations by three. The number of clamping plates in the clamping assemblies 22 is the same as the number of spacing channels 6.

[0046] Of course, the above are only typical examples of the present invention. In addition, the present invention may have many other specific implementation methods. Any technical solution formed by equivalent replacement or equivalent transformation falls within the scope of protection required by the present invention.

Claims

1. A distance expansion mechanism, characterized by: The invention comprises an expansion bracket (1), a material blocking push plate (2) and an expansion drive member (3); a feed channel (4) and an output channel (5) are arranged in parallel on the expansion bracket (1); at least two separation channels (6) are arranged between the feed channel (4) and the output channel (5); and the spacing between two adjacent separation channels (6) gradually increases from the feed channel (4) to the output channel (5); the material blocking push plate (2) is slidably connected to the expansion bracket (1); the feed channel (4) and the output channel (5) of the expansion drive member (3) are arranged in parallel; The outlet end is connected to the blocking push plate (2). When the expansion drive member (3) drives the blocking push plate (2) to move from the feed channel (4) to the output channel (5), the blocking push plate (2) will push the bottle preform seat in the feed channel (4) opposite to the spacing channel (6) into the output channel (5) via the corresponding feed channel (4), so as to increase the spacing between the bottle preform seats, and the blocking push plate (2) will block the bottle preform seat in the feed channel (4) that is misaligned with the spacing channel (6).

2. The distance expansion mechanism according to claim 1, characterized in that: The feed channel (4) is provided with a avoidance opening (7) on a side away from the output channel (5); the material blocking push plate (2) is located above the expansion bracket (1); a connecting bracket (8) is provided at the lower end of the material blocking push plate (2); the lower end of the connecting bracket (8) passes through the avoidance opening (7) and is connected to the output end of the expansion drive member (3).

3. The distance expansion mechanism according to claim 1, characterized in that: The blocking push plate (2) is provided with a limiting notch (10) near the lower end of the output channel (5). When the upper end of the preform seat moves into the limiting notch (10), the blocking push plate (2) near the upper end of the output channel (5) will limit the upward jump of the preform seat.

4. The distance expansion mechanism according to claim 1, characterized in that: The expansion drive member (3) includes a fixed seat (31), a sliding seat (32) and a driving element (33). The upper end of the fixed seat (31) is provided with a slide rail (11), and the slide rail (11) extends from the feed channel (4) to the output channel (5). The sliding seat (32) is slidably connected to the fixed seat (31) through the slide rail (11). The upper end of the sliding seat (32) is provided with an accommodating opening (12) for the bottle preform seat to move into, and the accommodating opening (12) is parallel to the feed channel (4). The output end of the driving element (33) is connected to the lower end of the sliding seat (32) for driving the sliding seat (32) to slide along the slide rail (11).

5. The distance expansion mechanism according to claim 4, characterized in that: The driving element (33) comprises a servo motor (331) arranged at the lower end of the fixed seat (31), a driving pulley (332) rotatably connected to the upper end of the fixed seat (31), a driven pulley (333) rotatably connected to the upper end of the fixed seat (31), and a transmission belt (334) tensioned between the driving pulley (332) and the driven pulley (333). The output end of the servo motor (331) passes through the fixed seat (31) upward and is coaxially connected to the driving pulley (332). The driving pulley (332) and the driven pulley (333) are respectively arranged on both sides of the moving direction of the sliding seat (32). The sliding seat (32) is fixedly connected to the transmission belt (334).

6. The distance extending mechanism according to claim 5, characterized in that: The fixing seat (31) comprises a fixing plate (311), a sliding plate (312) and an adjusting unit (313); an output end of the adjusting unit (313) is connected to the sliding plate (312) for driving the sliding plate (312) to move closer to or away from the fixing plate (311); the servo motor (331) and the driving pulley (332) are both mounted on the fixing plate (311); and the driven pulley (333) is mounted on the sliding plate (312).

7. The distance extending mechanism according to claim 6, characterized in that: A guide groove (23) is provided at the end of the fixed plate (311) close to the sliding plate (312), and the guide groove (23) extends along the length direction of the slide rail (11). A guide block (24) is provided at the end of the sliding plate (312) close to the fixed plate (311), and the guide block (24) is slidably connected in the guide groove (23).

8. The distance extending mechanism according to claim 6, characterized in that: The adjusting unit (313) comprises an adjusting seat (3131) and an adjusting bolt (3132), wherein a threaded section of the adjusting bolt (3132) passes through the adjusting seat (3131) and is threadedly connected to the adjusting seat (3131), and an end portion of the adjusting bolt (3132) is rotatably connected to the sliding plate (312).

9. The distance extending mechanism according to claim 4, characterized in that: A limiting plate (25) is provided on the side of the sliding seat (32) away from the material blocking push plate (2).

10. A pitch-changing device for a bottle blowing machine, characterized by: The invention comprises a front acceleration track (13), an expansion mechanism according to any one of claims 1 to 9, a transfer track (14) and a rear acceleration track (15) which are arranged in sequence, wherein a front conveyor belt (16) is provided at the lower end of the front acceleration track (13), and the front conveyor belt (16) is used to drive the preform seat to accelerate and approach the feed channel (4); a forming station (17), a discharging station (18) and a loading station (19) are arranged in sequence on the transfer track (14). The lower end of the rear acceleration track (15) is provided with a rear conveyor belt (20), and the rear conveyor belt (20) is used to drive the bottle preform seat to accelerate away from the loading station (19). The rear conveyor belt also includes a transmission chain (21), and a plurality of clamping assemblies (22) are evenly spaced on the transmission chain (21). The plurality of clamping assemblies (22) are used to drive the bottle preform seat to flow between the expansion mechanism, the forming station (17), the unloading station (18) and the loading station (19).

Images