Distance transfer device with reset torsion spring and bottle blowing machine

Abstract

The utility model relates to a spacing transfer device with a reset torsion spring and a bottle blowing machine. An existing spacing transfer device is complex in structure, and the use experience is affected. The device comprises a support, a transfer channel and a distance separation mechanism, the distance separation mechanism comprises an annular chain and a blank shifting piece, the annular chain comprises a linear section arranged along an inlet section of the transfer channel, and the annular chain is provided with a reset torsion spring which is arranged to avoid the linear section and provided with a reset abutting portion. The blank shifting piece can be switched between the shifting state of pushing the bottle blanks and the avoiding state of avoiding the bottle blanks in a swinging mode, and the blank shifting piece in the avoiding state can be shifted by the reset abutting portion to be reset to the shifting state when being driven by the annular chain to pass through the reset torsion spring. According to the blank shifting device, the reset torsion spring is arranged, the blank shifting piece is driven by the reset torsion spring to be switched from the avoiding state to the shifting state, the cost is reduced by sharing the reset torsion spring, the blank shifting piece reset to the shifting state is crossed through the deformability of the reset torsion spring, the reset reliability is improved, and the use experience is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of plastic processing, concretely relates to a distance transfer device and bottle blowing machine. BACKGROUND

[0002] The existing bottle blowing machine comprises a rack, a heating device, a distance transfer device and a bottle blowing device arranged on the rack, the heating device softens the bottle blank, the distance transfer device receives the softened bottle blank and transports it to the bottle blowing device after spacing, and the bottle blowing device receives the bottle blank transferred by the distance transfer device and blows it into a bottle. The existing distance transfer device comprises a support, a linear transfer channel arranged on the support, a mechanical arm arranged along the transfer channel, and a spacing mechanism matched with the transfer channel, the spacing mechanism and the mechanical arm are arranged below and above the transfer channel respectively, the spacing mechanism comprises a ring chain with a straight section and a bottle pushing piece equally spaced on the ring chain, the straight section of the ring chain is arranged along the inlet section of the transfer channel, the bottle pushing piece switches between the pushing state and the avoiding state through a reset assembly with a tension spring, the bottle blank received at the inlet of the transfer channel is pushed and spaced by the bottle pushing piece in the pushing state, and the bottle blank is grabbed and transferred by the mechanical arm and pushes the bottle pushing piece along the way to the avoiding state. In use, the two ends of the tension spring are connected with the ring chain and the bottle pushing piece respectively, so that the bottle pushing piece can swing and reset from the avoiding state to the pushing state under the drive of the tension spring. The reset assembly of this structure has the following defects: since each bottle pushing piece is provided with a corresponding tension spring, the number of tension springs is large, which increases the component cost and assembly difficulty, and the control accuracy of the tension spring is also required to be higher due to the small length difference of the tension spring when the bottle pushing piece is in the pushing state and the avoiding state, which leads to the situation that the tension spring is easily stuck due to relaxation, thereby affecting the use experience. SUMMARY

[0003] In order to solve the defects of the prior art, the utility model provides a distance transfer device with a reset torsional spring, which drives the bottle pushing piece to switch from the avoiding state to the pushing state by setting the reset torsional spring, which not only reduces the cost and improves the component use efficiency by sharing the reset torsional spring, but also effectively improves the reset reliability and use experience.

[0004] This utility model is achieved through the following method: a spacing transfer device with a reset torsion spring, comprising a bracket, a linear transfer channel disposed on the bracket, and a spacing mechanism disposed along the direction of the transfer channel. The spacing mechanism comprises an annular chain and blank-pushing components equidistantly disposed on the annular chain. The annular chain includes a straight section disposed along the inlet section of the transfer channel. The annular chain is provided with a reset torsion spring disposed away from the straight section and having a reset contact portion. The blank-pushing component can swing and switch between a pushing state of the blank and a avoiding state of the blank. When the blank-pushing component is in the avoiding state, it can be pushed back to the pushing state by the reset contact portion when passing the reset torsion spring under the drive of the annular chain. A reset torsion spring is installed, and its reset contact part contacts the blank-pushing component, causing the blank-pushing component to switch from an avoidance state to a pushing state. This ensures that the blank-pushing component can drive the bottle blank to be transported along the transfer channel. This not only reduces costs, facilitates assembly, and improves component utilization efficiency by sharing the reset torsion spring, but also utilizes the deformability of the reset torsion spring to bypass the blank-pushing component that has been reset to the pushing state, ensuring that the reset torsion spring can perform reset operations on each blank-pushing component, effectively improving reset reliability and enhancing the user experience.

[0005] Preferably, the two ends of the return torsion spring extend in opposite directions to form a rotation limiting part and a return abutment part. The rotation limiting part is fixedly connected to the bracket, and the return abutment part is disposed on the movement path of the blank-drawing part when it is in the avoidance state, so that the blank-drawing part can switch from the avoidance state to the drawing state under the drive of the return abutment part. The return abutment part can swing and change its height in the vertical plane, so that the return abutment part can switch between a deformation position below the blank-drawing part and an abutment position at the same height as the blank-drawing part. When the return abutment part is in the abutment position, it can abut against the blank-drawing part, so that the blank-drawing part can switch from the avoidance state to the drawing state under the drive of the ring chain.

[0006] Preferably, the reset torsion spring deforms, causing the reset abutment to switch between an abutment position at the same height as the actuating member and a deformation position that is horizontally misaligned with the actuating member. The reset abutment in the abutment position drives the blank-pulling member to switch to the actuating state and is then driven by the blank-pulling member to the deformation position, allowing the reset abutment to pass over the blank-pulling member and accumulate reset preload for switching to the abutment position. When the blank-pulling member switches to the actuating state, it is locked in place by a limiting component, driving the reset abutment to deform from the abutment position to the deformation position, thereby passing over the switched-in blank-pulling member and resetting to the abutment position, providing a reset operation for subsequent blank-pulling operations.

[0007] Preferably, the reset torsion spring includes a helical body, which is fixed to the bracket by fasteners passing through its axis to limit the body from shifting when the reset contact portion deforms. The fasteners passing through the body and fixed to the bracket serve both to position the reset torsion spring, ensuring that the reset contact portion can be used in conjunction with the blank, and to guide the reset contact portion, guiding it to switch precisely between the contact position and the deformation position.

[0008] Preferably, the annular chain includes two parallel straight segments and an arc segment between the corresponding ends of the straight segments. The bracket has two gear-mounted limiting posts, and the annular chain is wound around the gears. The reset torsion spring is installed on the limiting post near the inlet of the transfer channel, so that the blank-picking piece enters the transfer channel in a prying state. The limiting post not only positions and guides the rotation of the gears, ensuring the annular chain is tensioned and positioned, thus guaranteeing the blank-picking piece moves along a preset path, but also fixes the reset torsion spring, which is fastened to the limiting post by fasteners, resetting the blank-picking piece as it passes. The reset torsion spring, installed on the limiting post near the inlet of the transfer channel, ensures that all blank-picking pieces entering the transfer channel are in a prying state, guaranteeing that each preform can be pryed by its corresponding prying piece and move forward along the transfer channel. By shortening the distance between the annular chain and the inlet of the transfer channel, the possibility of the blank-picking piece switching back to an avoidance state due to external force is reduced, ensuring that the blank-picking piece enters the transfer channel in a prying state.

[0009] Preferably, the preform-dispensing component is rotatably mounted on a ring chain via a connecting shaft. The connecting end of the component has a through hole, and the connecting shaft passes through the component from top to bottom and is rotatably connected to the ring chain to guide the component to rotate around the connecting shaft. Mounting the component on the ring chain via the connecting shaft ensures that the component can move synchronously with the corresponding section of the ring chain, guaranteeing that it receives the power to move the preform. It also ensures that the component can switch between a yielding state and a dispensing state as needed, ensuring smooth preform delivery.

[0010] Preferably, a limiting component is provided between the blank-drawing component and the annular chain. The limiting component includes a limiting shaft disposed on the annular chain and adjacent to the corresponding connecting shaft, and a guide groove disposed on the bottom surface of the blank-drawing component. The guide groove has a drawing position and a clearance position for the end of the limiting shaft to abut against the limiting position when the blank-drawing component switches between the drawing state and the clearance state, so that the blank-drawing component swings in a preset direction and abuts against the limiting position. When the blank-drawing component swings around the connecting shaft, the limiting shaft can slide along the guide groove and be positioned at the drawing position and the clearance position, so as to achieve precise positioning of the blank-drawing component in the drawing state and the clearance state.

[0011] Preferably, the support is equipped with a robotic arm that cooperates with the transfer channel. The separating mechanism and the robotic arm are respectively located below and above the transfer channel. After the preforms received at the inlet of the transfer channel are separated by the separating component in a pushing state, the preforms are grasped and transferred by the robotic arm, which pushes the separating components along the way to an avoidance state. The robotic arm grasps the separated preforms and moves them away from the transfer channel. When multiple preforms are transferred simultaneously, the preforms near the inlet of the transfer channel will push against the blocking separating components, so that the separating components switch to an avoidance state to ensure that the preforms are smoothly moved away by the robotic arm.

[0012] Preferably, when the preform-pushing component is in the pushing state, its vertical projection width covers the transfer channel, allowing the component to push the preforms along the transfer channel. Driven by the annular chain, the preform-pushing component moves along the transfer channel and achieves spacing by pushing the preforms. One preform-pushing component pushes one preform, and the distance between adjacent preforms is the same as the distance between adjacent preform-pushing components, making the preform spacing distance controllable.

[0013] Preferably, when the preform-dispensing component is in the avoidance state, its vertical projection is offset from the transfer channel, so that the preform can be disengaged from the component along the transfer channel under the drive of the robotic arm. Multiple preforms may be pushed at intervals along the transfer channel, and these multiple preforms may be grabbed and carried away by the robotic arm at once. To ensure that the component pushing the preceding preform does not obstruct the disengagement of the following preform from the transfer channel, the component can switch to the avoidance state under the push of the following preform, ensuring that the preform can smoothly disengage from the transfer channel and preventing the component from hindering the transfer of the preform.

[0014] Preferably, the annular chain includes several links that are rotatably connected end to end, and chain holes that can be axially aligned are provided between corresponding ends of adjacent links. Both the connecting shaft and the limiting shaft can be inserted into the corresponding chain holes, and the connecting shaft and the limiting shaft are used to connect adjacent links, which effectively simplifies the structure, facilitates processing, and ensures that the annular chain can run smoothly.

[0015] A blow molding machine includes a frame and a heating device and a blow molding assembly mounted on the frame. The machine is characterized by a segmented transfer device on the frame, through which preforms output from the heating device are moved to the blow molding assembly, whereby the preforms are blown into bottles. The segmented transfer device enables rapid and stable segmented transfer of preforms, reducing maintenance costs by eliminating transfer malfunctions, effectively improving processing efficiency, and enhancing the user experience.

[0016] The beneficial effects of this utility model are as follows: By setting a reset torsion spring, the reset contact part of the reset torsion spring abuts against the blank-pushing component, causing the blank-pushing component to switch from the avoidance state to the pushing state. This ensures that the blank-pushing component can drive the bottle blank to be transported along the transfer channel. It reduces costs, facilitates assembly, and improves the efficiency of component use by sharing the reset torsion spring. Furthermore, the deformability of the reset torsion spring is used to bypass the blank-pushing component that has been reset to the pushing state, ensuring that the reset torsion spring can perform reset operations on each blank-pushing component, effectively improving reset reliability and enhancing the user experience. Attached Figure Description

[0017] Figure 1 This is a front view schematic diagram of the spacing transfer device described in Embodiment 1;

[0018] Figure 2 This is a schematic diagram of the spacing mechanism described in Embodiment 1;

[0019] Figure 3 This is a top view of the spacing mechanism described in Embodiment 1;

[0020] Figure 4 This is a schematic diagram of the assembly structure of the blank-drawing part described in Embodiment 1;

[0021] Figure 5 This is a schematic diagram of the blanking component described in Embodiment 1;

[0022] Figure 6 This is a schematic diagram of the structure of the reset spring described in Embodiment 1;

[0023] Figure 7 This is a schematic diagram of the segmented transfer device described in Embodiment 1;

[0024] In the diagram: 1. Bracket, 2. Transfer channel, 3. Ring chain, 4. Blank-pulling component, 5. Reset torsion spring, 6. Reset contact part, 7. Rotation limit part, 8. Fastener, 9. Limiting post, 10. Gear, 11. Limiting shaft, 12. Guide groove, 13. Robotic arm. Detailed Implementation

[0025] The essential features of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0026] Example 1:

[0027] This embodiment provides a segmented transfer device.

[0028] like Figure 1 and 2The shown spacing transfer device consists of a support 1, a linear transfer channel 2 mounted on the support 1, and a spacing mechanism arranged along the direction of the transfer channel 2. The spacing mechanism includes an annular chain 3 and blank-pushing components 4 equidistantly placed on the annular chain 3. The annular chain 3 includes two parallel straight segments and an arc segment between the corresponding ends of the straight segments. The straight segments of the annular chain 3 are arranged along the inlet section of the transfer channel 2. The annular chain 3 is provided with a reset torsion spring 5 with a reset contact part 6. The blank-pushing component 4 can swing and switch between a pushing state and a avoiding state. When the blank-pushing component 4 is in the avoiding state, it can be pushed back to the pushing state by the reset contact part 6 when it passes the reset torsion spring 5 under the drive of the annular chain 3. A reset torsion spring 5 is provided, and the reset contact part 6 of the reset torsion spring 5 abuts against the blank-pushing part 4, so that the blank-pushing part 4 switches from the avoidance state to the pushing state. This ensures that the blank-pushing part 4 can drive the bottle blank to be transported along the transfer channel 2. This not only reduces costs, facilitates assembly, and improves the efficiency of component use by sharing the reset torsion spring 5, but also uses the deformability of the reset torsion spring 5 to pass over the blank-pushing part 4 that has been reset to the pushing state, ensuring that the reset torsion spring 5 can perform reset operation on each blank-pushing part 4, effectively improving reset reliability and user experience.

[0029] In this embodiment, the support 1 is equipped with a robotic arm 13 that cooperates with the transfer channel 2 (e.g., Figure 7 As shown, the separating mechanism and the robotic arm 13 are respectively positioned below and above the transfer channel 2. After the preforms received at the inlet of the transfer channel 2 are separated by the pushing and separating component 4 in a pushing state, the preforms are grasped and transferred by the robotic arm 13, which pushes the pushing component 4 along the way to an avoidance state. The separating mechanism and the robotic arm 13 are positioned below and above the transfer channel 2 respectively, allowing them to operate on different parts of the preform. This prevents interference between the separating mechanism and the robotic arm 13 when operating on the same area of ​​the preform, ensuring that the separating mechanism and the robotic arm 13 can operate independently on the preform and ensure that the preform is stably and accurately separated and transferred.

[0030] In this embodiment, the annular chain 3 includes several chain links that are rotatably connected end to end. Corresponding ends of adjacent chain links are provided with chain holes that can be axially aligned. The corresponding ends of adjacent chain links are stacked on top of each other and rotatably connected by a chain shaft passing through the aligned chain holes, allowing the annular chain 3 to be horizontally tensioned and driven to rotate by two gears 10. The bracket 1 is provided with two limiting posts 9 equipped with gears 10. The annular chain 3 is wound around the gears 10. The reset torsion spring 5 is installed on the limiting post 9 near the inlet of the transfer channel 2, so that the blank-picking piece 4 enters the transfer channel 2 in a prying state. The annular chain 3 is positioned by the pull of the two gears 10, which receive driving force from the motor and drive the annular chain 3 to rotate. The blank-picking pieces 4 are equidistantly distributed on the annular chain 3. The reset torsion spring 5 is located on the annular chain 3 near the inlet of the transfer channel 2, ensuring that the blank-picking piece 4 can switch from a yielding state to a prying state when driven by the annular chain 3 and passes the reset torsion spring 5. The robotic arm 13 includes several mechanical claws that are equidistantly spaced along a straight line. The straight line where the mechanical claws are located coincides with the straight line where the transfer channel 2 is located, so that the mechanical claws can grasp the bottle preforms that are separated by the spacing component and transport them along the transfer channel.

[0031] In use, the inlet section of the transfer channel 2 receives bottle preforms from the heating device. The preform-pushing component 4 rotates with the annular chain 3 and is reset to the pushing state when passing the reset torsion spring 5. The preform-pushing component 4 in the pushing state enters the transfer channel 2 and pushes the bottle preforms to move along the transfer channel 2. As the inlet section continues to receive bottle preforms, the rotating annular chain 3 will push the bottle preforms along the transfer channel 2 in a timely manner through the continuously set preform-pushing components 4. Since the preform-pushing components 4 will push the bottle preforms to move one by one, the bottle preforms located on the transfer channel 2 will move synchronously with the corresponding preform-pushing component 4, thereby achieving the purpose of the distance between adjacent bottle preforms being the same as the distance between adjacent preform-pushing components 4, thus realizing the separation operation of the bottle preforms. When the number of preforms on transfer channel 2 meets the requirements for a single blow molding cycle, robotic arm 13 simultaneously grabs the required number of preforms via mechanical claws and transfers them to the outlet section of transfer channel 2. During this process, the rear preforms near the inlet of transfer channel 2 are blocked by the preform pusher 4 that pushes the front preforms during transfer. The pusher 4 switches from a pushing state to a yielding state due to the push of the rear preforms. When the rear preforms cross the pusher, the pusher 4 is switched to a yielding state and moves with the ring chain 3. Before entering transfer channel 2 again in the next cycle, it is pushed back to the pushing state by the reset torsion spring 5. By setting the pusher 4, which can switch back and forth between the pushing state and the yielding state, the purpose of synchronous transfer of multiple preforms between the splitting assembly and robotic arm 13 is achieved. The distances between adjacent pushers 4 and adjacent mechanical claws are matched with the distances between adjacent mold cavities on the mold, ensuring that the split preforms can be transported to the corresponding mold cavity by robotic arm 13.

[0032] In this embodiment, the two ends of the return torsion spring 5 extend in opposite directions to form a rotation-limiting portion 7 and a return contact portion 6 (e.g., ...). Figure 6 As shown, the rotation limiting part 7 is fixedly connected to the bracket 1, and the reset contact part 6 is disposed on the moving path of the blank-picking part 4 when it is in the avoidance state, so that the blank-picking part 4 can switch from the avoidance state to the plucking state under the drive of the reset contact part 6. The reset torsion spring 5 includes a spiral-shaped body, and the two ends of the body respectively form the rotation limiting part 7 and the reset contact part 6 by vertical extension. During installation, the fastener 8 passes through the body and is fixed to the side wall of the limiting post 9. The rotation limiting part 7 is fitted and fixed to the side wall of the limiting post 9, so that the reset contact part 6 of the reset torsion spring 5 can be deformed by force and accurately reset, preventing the body from shifting when the reset contact part 6 is deformed.

[0033] In this embodiment, the reset torsion spring 5 deforms, causing the reset abutment 6 to switch between an abutment position at the same height as the actuating member and a deformation position where it is horizontally misaligned with the actuating member. When in the abutment position, the reset abutment 6 drives the blanking member 4 to switch to the actuating state and is then driven by the blanking member 4 to the deformation position, allowing the reset abutment 6 to pass over the blanking member 4 and accumulate reset preload for switching to the abutment position. The reset abutment 6 can swing around the body, ensuring that it can drive the blanking member 4 to swing to the actuating state through abutment and limiting, and also allowing the blanking member 4 in the actuating state to push the reset abutment 6 to swing. Furthermore, by lowering the height of the reset abutment 6, it avoids the blanking member 4 switching to the actuating state, and uses the preload of the body to drive the reset torsion spring 5 to reset, preparing for the subsequent reset of the blanking member 4. All blank-picking parts 4 on the ring chain 3 share the same return torsion spring 5, which effectively improves the utilization efficiency of the parts, simplifies the structure, and facilitates assembly and maintenance.

[0034] In this embodiment, the blank-drawing component 4 is rotatably mounted on the annular chain 3 via a connecting shaft (e.g., Figure 3 As shown, the connecting end of the blank-drawing component 4 has a through hole, and the connecting shaft passes through the blank-drawing component 4 from top to bottom and is rotatably connected to the annular chain 3 to guide the blank-drawing component 4 to rotate around the connecting shaft. Using the connecting shaft instead of the chain shaft effectively simplifies the structure and facilitates assembly.

[0035] In this embodiment, a limiting component is provided between the blank-drawing component 4 and the annular chain 3. The limiting component includes a limiting shaft 11 disposed on the annular chain 3 and adjacent to the corresponding connecting shaft, and a guide groove 12 disposed on the bottom surface of the blank-drawing component 4 (e.g., ...). Figure 4 As shown), the guide groove 12 is provided with a turning station and a clearance station (e.g., when the blank-shifting component 4 is switched to the turning state and the clearance state, the end of the limiting shaft 11 is allowed to abut against the limit) for limiting. Figure 5As shown), the blank-picking piece 4 swings along a preset direction and abuts against the limit position. The reset abutment part 6 can both abut against the blank-picking piece 4 and drive the blank-picking piece 4 to switch to the plucking state, so that the limit shaft 11 moves to the plucking position of the guide groove 12, and can also use the limit shaft 11 and the plucking position of the guide groove 12 to abut against the limit position to convert the running force of the ring chain 3 into the force that drives the reset abutment part 6 to switch to the deformation position, ensuring that the blank-picking piece 4 can smoothly pass over the reset torsion spring 5 after switching to the plucking state.

[0036] In this embodiment, when the preform-dispensing component 4 is in the dispensing state, its vertical projection width covers the transfer channel 2, allowing the preform-dispensing component 4 to push the preform along the transfer channel 2 and complete the spacing operation. When the preform-dispensing component 4 is in the avoidance state, its vertical projection is misaligned with the transfer channel 2, allowing the preform to be disengaged from the preform-dispensing component 4 along the transfer channel 2 by the mechanical arm 13.

[0037] Example 2:

[0038] Compared to Embodiment 1, this embodiment provides a blow molding machine.

[0039] A blow molding machine comprises a frame and a heating device, a spacing transfer device, and a blow molding device mounted on the frame. Bottle preforms output from the heating device are moved to the blow molding device via the spacing transfer device, where they are blown into bottles. The spacing transfer device enables rapid and stable spacing transfer of bottle preforms, reducing maintenance costs by eliminating transfer malfunctions, effectively improving processing efficiency, and enhancing the user experience.

[0040] The structure and effect of the interval transfer device described in this embodiment are the same as those in Embodiment 1, and will not be repeated here.

Claims

1. A distance separating and transferring device with reset torsion spring, comprising a support (1), a linear transferring channel (2) arranged on the support (1), and a distance separating mechanism arranged along the transferring channel (2), characterized in that, The distance distributing mechanism comprises a ring chain (3) and a bottle blank pushing member (4) equidistantly distributed on the ring chain (3), the ring chain (3) comprises a straight section arranged at the entrance section of the transfer channel (2), the ring chain (3) is provided with a reset torsion spring (5) arranged away from the straight section and provided with a reset abutting part (6), the bottle blank pushing member (4) can swing and switch between a pushing state of pushing the bottle blank and an avoiding state of avoiding the bottle blank, the bottle blank pushing member (4) in the avoiding state can be pushed and reset to the pushing state by the reset abutting part (6) when passing through the reset torsion spring (5) driven by the ring chain (3).

2. The distance transfer device with a reset torsion spring according to claim 1, characterized in that, Both ends of the reset torsion spring (5) are formed into a rotation limiting part (7) and the reset abutting part (6) by extending backward, the rotation limiting part (7) is fixedly connected with the support (1), and the reset abutting part (6) is arranged on the moving path of the bottle blank pushing member (4) in the avoiding state, so that the bottle blank pushing member (4) can switch from the avoiding state to the pushing state under the driving of the reset abutting part (6).

3. The distance transfer device with a reset torsion spring according to claim 2, characterized in that, The reset torsion spring (5) is deformed and makes the reset abutting part (6) switch between an abutting station arranged at the same height with the pushing member and a deformation station dislocated with the horizontal projection of the pushing member, the reset abutting part (6) in the abutting station is driven to the deformation station by the bottle blank pushing member (4) after driving the bottle blank pushing member (4) to switch to the pushing state, so that the reset abutting part (6) passes through the bottle blank pushing member (4) and accumulates the reset pre-tightening force for switching to the abutting station.

4. The distance transfer device with a reset torsion spring according to claim 3, characterized in that, The reset torsion spring (5) comprises a helical body, the body is fixedly connected with the support (1) by a fastener (8) penetrating along the axis of the body, so as to limit the offset of the body when the reset abutting part (6) is deformed; or the ring chain (3) comprises two parallel straight sections and an arc section arranged between the corresponding ends of the straight sections, the support (1) is provided with two limiting columns (9) provided with gears (10), the ring chain (3) is arranged around the gears (10), and the reset torsion spring (5) is installed on the limiting column (9) close to the entrance of the transfer channel (2), so that the bottle blank pushing member (4) enters the transfer channel (2) in the pushing state.

5. The distance transfer device with a reset torsion spring according to any one of claims 1-4, characterized in that, The bottle blank pushing member (4) is rotatably installed on the ring chain (3) by a connecting shaft, the connecting end of the bottle blank pushing member (4) is provided with a through hole, and the connecting shaft penetrates the bottle blank pushing member (4) from top to bottom and is rotatably connected with the ring chain (3), so as to guide the bottle blank pushing member (4) to rotate around the connecting shaft.

6. The distance transfer device with a reset torsion spring according to any one of claims 1-4, characterized in that, A limiting assembly is arranged between the bottle blank pushing member (4) and the ring chain (3), the limiting assembly comprises a limiting shaft (11) arranged on the ring chain (3) and arranged adjacent to the corresponding connecting shaft and a guide groove (12) arranged on the bottom surface of the bottle blank pushing member (4), the guide groove (12) is provided with a pushing station and an avoiding station for the end part of the limiting shaft (11) to abut and limit when the bottle blank pushing member (4) switches to the pushing state and the avoiding state, so that the bottle blank pushing member (4) swings and abuts and limits in the preset direction.

7. The distance transfer device with a reset torsion spring according to any one of claims 1-4, characterized in that, The support (1) is provided with a mechanical arm (13) matched with the transfer channel (2), the distance separating mechanism and the mechanical arm (13) are arranged below and above the transfer channel (2) respectively, after the bottle blank received at the inlet of the transfer channel (2) is pushed and separated by the bottle blank pushing member (4) in the pushing state, the bottle blank is grabbed and transferred by the mechanical arm (13) and the bottle blank pushing member (4) along the way is pushed to the avoiding state.

8. The distance transfer device with a reset torsion spring according to claim 7, characterized in that, When the bottle blank pushing member (4) is in the pushing state, the vertical projection of the bottle blank pushing member (4) covers the transfer channel (2), so that the bottle blank pushing member (4) can push and move the bottle blank along the transfer channel (2); or when the bottle blank pushing member (4) is in the avoiding state, the vertical projection of the bottle blank pushing member (4) is arranged in a staggered manner with the transfer channel (2), so that the bottle blank can be driven by the mechanical arm (13) to move away from the bottle blank pushing member (4) along the transfer channel (2).

9. The distance transfer device with a reset torsion spring according to any one of claims 1-4, characterized in that, The ring chain (3) comprises a plurality of chain links rotationally connected in a head-to-tail manner, and chain holes axially aligned are arranged between corresponding end portions of adjacent chain links.

10. A bottle blowing machine comprising a machine frame and a heating device and a bottle blowing device arranged on the machine frame, characterized in that The rack is provided with the distance separating and transferring device of any one of claims 1-9, and the bottle blank output by the heating device is moved to the bottle blowing device through the distance separating and transferring device, so that the bottle blank is blown into a bottle body.

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