A luggage drawbar production and forming device

Abstract

The present invention provides a luggage drawbar production and forming device, which relates to the technical field of luggage drawbar forming devices, including a plurality of mounting holes opened on a mold, each of the mounting holes is respectively installed with an internal tube, each of the internal tubes is respectively slidably connected with a telescopic sleeve, a control rod is slidably connected in the telescopic sleeve, and an air outlet rod is coaxially installed on the control rod, a top hole is opened on the internal tube, the air outlet rod fits in the top hole, no less than eight groups of ventilation grooves are opened in the telescopic sleeve, a guide sleeve is provided in the internal tube, and the control rod is slidably connected in the guide sleeve. The device is equipped with an air pressure control mechanism, which realizes precise control of the demoulding process through multiple groups of air passages, and the system can release high-pressure gas at an appropriate time to effectively break the adhesion between the plastic product and the mold surface, significantly improve the success rate of demoulding, and avoid product damage that may be caused by traditional forced demoulding.

Description

Technical Field

[0001] The invention relates to the technical field of luggage drawbar forming, and more particularly to a luggage drawbar production and forming device. Background Art

[0002] In the current luggage manufacturing industry, the production process of the pull rod system faces a common problem. As an important component of luggage, the production process of plastic pull rods involves injection molding. In this process, molten plastic materials are injected into a mold of a specific shape and need to go through a proper cooling process before they can be formed. However, due to the characteristics of plastic materials and the limitations of existing mold technology, this cooling process has technical difficulties. In particular, during the transition from high temperature to normal temperature, the physical properties of plastic materials will change significantly, and this change often leads to problems with product quality and production efficiency.

[0003] When the plastic material is cooled in the mold, the material often adheres to the mold surface. This adhesion problem not only affects the surface quality of the product, but more seriously makes it difficult to remove the molded tie rod parts from the mold. This situation not only increases production time and reduces production efficiency, but may also cause deformation or damage to the product. In addition, frequent forced demolding may damage the mold surface, resulting in a reduction in mold service life and increased production costs. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] In view of the problems existing in the prior art, the present invention provides a luggage drawbar production and molding device to solve the technical problems mentioned in the background technology.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a luggage pull rod production and forming device, comprising two molds installed on external equipment; also comprising a blowing mechanism, the blowing mechanism comprising a plurality of mounting holes opened on the mold, each of the mounting holes is respectively installed with an internal tube, each of the internal tubes is respectively slidably connected with a telescopic sleeve, a control rod is slidably connected in the telescopic sleeve, and an air outlet rod is coaxially installed on the control rod, a top hole is opened on the internal tube, the air outlet rod fits in the top hole, no less than eight groups of ventilation grooves are opened in the telescopic sleeve, a guide sleeve is provided in the internal tube, and the control rod is slidably connected in the guide sleeve; a control mechanism, the control mechanism comprising a control groove opened in the telescopic sleeve, a piston disk is sealingly and slidably connected in the control groove, the piston disk is coaxially installed on the control rod, a plurality of downward pressure grooves connected with the ventilation groove are opened at the upper end of the control groove, and a plurality of slow-feed grooves connected with the ventilation groove are opened at the lower end of the control groove.

[0008] Preferably, the blowing mechanism also includes ventilation pipes corresponding to the plurality of ventilation grooves, the lower ends of the plurality of ventilation pipes are connected to and installed with receiving sleeves, the plurality of receiving sleeves are respectively connected to the air inlet pipes, and the air inlet pipes are connected to an external air source. This design achieves uniform distribution of high-pressure gas through a multi-level air path distribution system. The ventilation pipes ensure the stability of gas delivery, and the design of the receiving sleeves provides a reliable air path connection, thereby forming an efficient gas transmission network as a whole and ensuring the control of air pressure during the demolding process.

[0009] Preferably, a lifting sleeve is coaxially threadedly installed on the outer wall of the inner tube, a follower groove is provided in the lifting sleeve, a follower plate is installed on the outer wall of the lifting sleeve, the follower plate is slidably connected in the follower groove, a plurality of internal springs are installed on the follower plate, and the plurality of internal springs are in contact with the inner tube. This design realizes the height adjustment function through the cooperation of the lifting sleeve and the follower plate.

[0010] Preferably, a plurality of guide strips are installed on the inner wall of the inner tube, and guide grooves corresponding to the guide strips are opened on the outer wall of the telescopic sleeve, and the guide grooves are slidably connected in the guide grooves. This design ensures the stability and straightness of the telescopic sleeve during movement through the cooperation of the guide strips and the guide grooves.

[0011] Preferably, the control mechanism also includes vertical grooves with the same number as the ventilation grooves, multiple groups of the slow-feed grooves are respectively connected to the vertical grooves, multiple vertical grooves are respectively connected to the control grooves, and each of the vertical grooves is slidably connected with a closing rod. This design achieves precise control of the airflow channel through the cooperation of the vertical grooves and the closing rods, and the setting of multiple groups of slow-feed grooves ensures the return speed of the piston disc.

[0012] Preferably, a synchronization disk is installed on the multiple closing rods, and the synchronization disk and the telescopic sleeve are coaxially arranged. An internal groove is opened in the telescopic sleeve, and an adjustment sleeve is threadedly installed in the internal groove. The synchronization sleeve is limitedly slidably connected in the adjustment sleeve. This design realizes the synchronous movement of multiple closing rods through the cooperation of the synchronization disk and the adjustment sleeve, thereby ensuring the consistency of air pressure control.

[0013] Preferably, a spring is installed at the lower end of the control rod, a resistance block is installed on the spring, a threaded rod is coaxially threadedly installed in the telescopic sleeve, and the threaded rod is pressed against the resistance block. This design provides an adjustable return force through the cooperation of the spring and the resistance block, and the setting of the threaded rod realizes precise adjustment of the pre-pressure.

[0014] Preferably, a side groove is opened in the mold, a side block is slidably connected in the side groove, a mold core is installed on the side blocks on both sides, and a side bolt is installed on the mold, and the side bolt is threadedly connected in the mold core. This design realizes the rapid installation of the mold through the cooperation of the side block and the mold core.

[0015] Preferably, a plurality of feed pipes are respectively installed on the two molds, and the plurality of feed pipes are respectively connected to external feeding equipment. This design ensures uniform injection of raw materials through uniform distribution of the plurality of feed pipes.

[0016] (III) Beneficial effects

[0017] Compared with the prior art, the present invention provides a luggage drawbar production and forming device, which has the following beneficial effects:

[0018] The device is equipped with an air pressure control mechanism. Through multiple groups of air channels, precise control of the demoulding process is achieved. The system can release high-pressure gas at the right time to effectively break the adhesion between the plastic product and the mold surface, significantly improve the success rate of demoulding, and avoid product damage that may be caused by traditional forced demoulding. Through the cooperation of the piston disc and the control groove, the system can automatically adjust the timing and intensity of air pressure release. This design not only ensures the smooth progress of the demoulding process, but also reduces the waste of high-pressure gas and improves energy efficiency. Through the adjustable closing rod and synchronous disc combination, the operator can control the speed and time of air pressure release according to the needs of different products. This flexible adjustment ability ensures that products of different specifications can obtain the best demoulding effect. Through the cooperation of the threaded rod and the resistance block, the pre-pressure of the spring can be accurately adjusted to meet the demoulding requirements of different products. This design improves the adaptability of the device, enabling it to handle products of various specifications and materials. Through the cooperation of the lifting sleeve and the follower disc, the working space of the control groove can be accurately adjusted to achieve control of the gas output. This design not only improves the demoulding effect, but also reduces energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of a luggage drawbar production and forming device in the present invention;

[0020] Figure 2 It is a schematic diagram of the explosion structure of the mold core and the mold in the present invention;

[0021] Figure 3 It is a schematic diagram of the structure of the air intake pipe and the internal pipe in the present invention;

[0022] Figure 4 It is a schematic diagram of the structure of the inner tube and the receiving sleeve in the present invention;

[0023] Figure 5 It is a schematic cross-sectional structure diagram of the internal tube and the telescopic sleeve in the present invention;

[0024] Figure 6 It is a cross-sectional structural schematic diagram of the control rod and the telescopic sleeve in the present invention;

[0025] Figure 7 It is a schematic diagram of the cross-sectional structure of the internal tube in the present invention;

[0026] Figure 8 It is a schematic cross-sectional structural diagram of the adjustment sleeve in the present invention;

[0027] Fig. 9 It is a schematic cross-sectional structural diagram of the telescopic sleeve and the receiving sleeve in the present invention.

[0028] In the figure: 11, mold; 21, mounting hole; 22, internal tube; 23, telescopic sleeve; 24, control rod; 25, air outlet rod; 26, top hole; 27, ventilation groove; 28, guide sleeve; 29, ventilation pipe; 31, control groove; 32, piston plate; 33, down-pressing groove; 34, slow-feeding groove; 35, vertical groove; 36, closing rod; 37, synchronous plate; 38, internal groove; 39, adjustment sleeve; 41, side groove; 42, side block; 43, mold core; 44, side bolt; 45, feed pipe; 210, receiving sleeve; 211, lifting sleeve; 212, follow-up groove; 213, follow-up plate; 214, internal spring; 215, guide strip; 216, guide groove; 310, spring; 311, resistance block; 312, threaded rod; 101, air inlet pipe. DETAILED DESCRIPTION

[0029] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0030] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0031] In the present invention, unless otherwise specified, the directions used, such as "up" and "down", usually refer to the directions shown in the drawings, or to the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directions are not used to limit the present invention.

[0032] See also Figures 1 to 9 , a luggage drawbar production and forming device, comprising two molds 11 installed on external equipment; a side groove 41 is provided in the mold 11, a side block 42 is slidably connected in the side groove 41, a mold core 43 is installed on the side blocks 42 on both sides, a side bolt 44 is installed on the mold 11, the side bolt 44 is threadedly connected in the mold core 43, a plurality of feed pipes 45 are respectively installed on the two molds 11, and the plurality of feed pipes 45 are respectively connected to the external feed equipment, the blowing mechanism comprises a plurality of mounting holes 21 provided on the mold 11, an internal tube 22 is respectively installed on each mounting hole 21, a telescopic sleeve 23 is slidably connected in each internal tube 22, a control rod 24 is slidably connected in the telescopic sleeve 23, and an air outlet rod 25 is coaxially installed on the control rod 24, a top hole 26 is provided on the internal tube 22, the air outlet rod 25 fits in the top hole 26, and no less than eight groups of ventilation grooves 27 are provided in the telescopic sleeve 23. A guide sleeve 28 is provided in the inner tube 22, and the control rod 24 is slidably connected in the guide sleeve 28. The blowing mechanism also includes a ventilation pipe 29 corresponding to the plurality of ventilation grooves 27. The lower ends of the plurality of ventilation pipes 29 are connected and installed with a receiving sleeve 210. The plurality of receiving sleeves 210 are respectively connected to the air inlet pipe 101, and the air inlet pipe 101 is connected to the external air source. A lifting sleeve 211 is coaxially threadedly installed on the outer wall of the inner tube 22, and a follower is provided in the lifting sleeve 211. Groove 212, a follower plate 213 is installed on the outer wall of the lifting sleeve 211, and the follower plate 213 is slidably connected in the follower groove 212. A plurality of internal springs 214 are installed on the follower plate 213, and the plurality of internal springs 214 abut against the internal tube 22. A plurality of guide strips 215 are installed on the inner wall of the internal tube 22. A guide groove 216 corresponding to the guide strip 215 is opened on the outer wall of the telescopic sleeve 23, and the guide groove 216 is slidably connected in the guide groove 216.

[0033] When producing the pull rod, the core 43 is first installed in the mold 11, and then the two molds 11 are fitted together, and the raw materials are introduced into the mold 11 through the feed pipe 45. When it needs to be taken out after cooling, the high-pressure gas introduced through the air inlet pipe 101 is first introduced into the inner tube 22, and then the seal between the air outlet rod 25 and the top hole 26 is released, and then the top hole 26 discharges the corresponding gas to release the adhesion between the pull rod and the inner wall, thereby completing the molding process.

[0034] See also Figure 5 First, the gas enters the ventilation groove 27 through the air inlet pipe 101, the receiving sleeve 210 and the ventilation pipe 29. At this time, the gas will first pass into the space between the internal tube 22 and the telescopic sleeve 23. Since the air outlet rod 25 and the top hole 26 are in a closed state, the gas cannot be discharged. Moreover, since the lower pressure groove 33 and the slow-feed groove 34 are respectively connected to the upper and lower ends of the ventilation groove 27 and the control groove 31, the high-pressure gas will also enter the upper and lower ends of the control groove 31 respectively. Since the diameter of the lower pressure groove 33 is much larger than the diameter of the slow-feed groove 34, the speed at which the pressure at the upper end of the control groove 31 increases is much faster than the speed at the lower end. At this time, the pressure at the upper end of the piston disc 32 is greater than the pressure at the lower end of the piston disc 32 plus the elastic force of the spring 310, so that the piston disc 32 will move downward, thereby untying the connection between the air outlet rod 25 and the top hole 26, thereby extending The high-pressure gas between the shrink sleeve 23 and the internal tube 22 will be discharged through the top hole 26, and then the high-pressure gas will enter between the outside of the pull rod and the mold 11, thereby releasing the adhesion between the outer wall of the pull rod and the mold 11. This process only requires a small amount of gas to complete, and then the adhesion can be released. As time goes by, the gas in the slow-in groove 34 continues to enter, so the pressure at the lower end of the piston disc 32 slowly increases, so the piston disc 32 gradually returns until the air outlet rod 25 is against the top hole 26. At this time, the top hole 26 will be sealed, so the air outlet will stop, and then the continuous discharge of high-pressure gas will avoid damage to the pull rod, and the amount of high-pressure gas will be reduced. At this time, the supply of high-pressure gas is stopped, and the pressure of the upper and lower ends of the space in the control groove 31 is restored to normal pressure. At this time, the reset process is completed and it can be prepared for the next use.

[0035] When the return speed of the piston plate 32 needs to be adjusted, it is only necessary to change the number of connections between the slow-feed groove 34 and the vertical groove 35. Figure 6 Since the adjusting sleeve 39 is threadedly connected in the inner tube 22, and the synchronizing disk 37 is limitedly connected in the adjusting sleeve 39, it will move with the up and down movement of the adjusting sleeve 39. At this time, the positions of multiple closing rods 36 can be controlled, thereby changing the number of connections between the slow-feed groove 34 and the vertical groove 35, thereby changing the return speed.

[0036] See also Figures 5 to 9The control mechanism includes a control groove 31 provided in the telescopic sleeve 23, a piston disc 32 is sealed and slidably connected in the control groove 31, and the piston disc 32 is coaxially mounted on the control rod 24. The upper end of the control groove 31 is provided with a plurality of downward pressure grooves 33 connected to the ventilation groove 27, and the lower end of the control groove 31 is provided with a plurality of slow-feed grooves 34 connected to the ventilation groove 27. The control mechanism also includes vertical grooves 35 with the same number as the ventilation grooves 27, and the plurality of groups of slow-feed grooves 34 are respectively connected to the vertical grooves 35, and the plurality of vertical grooves 35 are respectively connected to the control groove 31. A closing rod 36 is slidably connected in each vertical groove 35, and a synchronization disk 37 is installed on multiple closing rods 36. The synchronization disk 37 and the telescopic sleeve 23 are coaxially arranged. An internal groove 38 is opened in the telescopic sleeve 23, and an adjustment sleeve 39 is installed with an internal thread of the internal groove 38. The synchronization disk 37 is limitedly slidably connected in the adjustment sleeve 39. A spring 310 is installed at the lower end of the control rod 24, and a resistance block 311 is installed on the spring 310. A threaded rod 312 is coaxially threadedly installed in the telescopic sleeve 23, and the threaded rod 312 presses on the resistance block 311.

[0037] When it is necessary to adjust the initial pressure of the spring 310, it is only necessary to rotate the threaded rod 312 and then push the resistance block 311 to move, thereby changing the compression amount of the spring 310, and then changing the initial elastic force of the spring 310. When it is necessary to adjust the space at the upper and lower ends of the control groove 31 according to different situations, it is only necessary to rotate the lifting sleeve 211. Since the lifting sleeve 211 is threadedly connected to the internal tube 22, and the position of the telescopic sleeve 23 can be changed through the sliding connection between the follower disk 213 and the follower groove 212, the space size at the upper and lower ends of the control groove 31 is changed, thereby changing the air outlet time of the top hole 26, and the air outlet volume can be controlled.

[0038] In all the schemes mentioned above, the connection between two parts can be selected according to actual conditions by welding, bolt and nut matching connection, bolt or screw connection or other well-known connection methods, which will not be described one by one here. In the above, all fixed connections are preferably welded. Although the embodiments of the present invention have been shown and described, it can be understood by ordinary technicians in this field that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A luggage drawbar production and molding device, comprising two molds (11) mounted on external equipment; wherein: The mold (11) further comprises a blowing mechanism, wherein the blowing mechanism comprises a plurality of mounting holes (21) formed on the mold (11), each mounting hole (21) being respectively mounted with an internal tube (22), each internal tube (22) being respectively slidably connected with a telescopic sleeve (23), a control rod (24) being slidably connected with the telescopic sleeve (23), and an air outlet rod (25) being coaxially mounted on the control rod (24), a top hole (26) being formed on the internal tube (22), the air outlet rod (25) being fitted in the top hole (26), and the telescopic sleeve (23) being slidably connected with a control rod (24). The telescopic sleeve (23) is provided with at least eight groups of ventilation grooves (27); the inner tube (22) is provided with a guide sleeve (28); the control rod (24) is slidably connected to the guide sleeve (28); a control mechanism, the control mechanism comprising a control groove (31) provided in the telescopic sleeve (23); a piston disc (32) is sealingly slidably connected to the control groove (31); the piston disc (32) is coaxially mounted on the control rod (24); a plurality of holes (27) are provided at the upper end of the control groove (31) and are connected to the ventilation groove (27). A downward pressure groove (33), a plurality of slow-feed grooves (34) connected to the ventilation groove (27) are opened at the lower end of the control groove (31), the control mechanism also includes vertical grooves (35) of the same number as the ventilation grooves (27), a plurality of groups of the slow-feed grooves (34) are respectively connected to the vertical grooves (35), a plurality of the vertical grooves (35) are respectively connected to the control groove (31), a closing rod (36) is slidably connected to each of the vertical grooves (35), a synchronization disk (37) is installed on the plurality of the closing rods (36), and the synchronization disk (37) ) and the telescopic sleeve (23) are coaxially arranged, the telescopic sleeve (23) is provided with an internal groove (38), an adjusting sleeve (39) is installed in the internal thread of the internal groove (38), the synchronizing disk (37) is limitedly slidably connected in the adjusting sleeve (39), a spring (310) is installed at the lower end of the control rod (24), a resistance block (311) is installed on the spring (310), a threaded rod (312) is installed in the telescopic sleeve (23) coaxially with the thread, and the threaded rod (312) is pressed against the resistance block (311).

2. The luggage drawbar production and forming device according to claim 1 is characterized by: The blowing mechanism further comprises ventilation pipes (29) corresponding to the plurality of ventilation grooves (27); the lower ends of the plurality of ventilation pipes (29) are connected to receiving sleeves (210) installed thereon; the plurality of receiving sleeves (210) are respectively connected to an air inlet pipe (101); and the air inlet pipe (101) is connected to an external air source.

3. The luggage drawbar production and forming device according to claim 2 is characterized by: A lifting sleeve (211) is coaxially threadedly mounted on the outer wall of the inner tube (22); a follower groove (212) is provided in the lifting sleeve (211); a follower plate (213) is mounted on the outer wall of the lifting sleeve (211); the follower plate (213) is slidably connected in the follower groove (212); a plurality of internal springs (214) are mounted on the follower plate (213); and the plurality of internal springs (214) are in contact with the inner tube (22).

4. The luggage drawbar production and forming device according to claim 3 is characterized by: A plurality of guide strips (215) are installed on the inner wall of the inner tube (22), and a guide groove (216) corresponding to the guide strips (215) is opened on the outer wall of the telescopic sleeve (23), and the guide groove (216) is slidably connected inside the guide groove (216).

5. The luggage drawbar production and forming device according to claim 1 is characterized by: The mold (11) is provided with a side groove (41), and a side block (42) is slidably connected in the side groove (41). A mold core (43) is installed on the side blocks (42) on both sides. The mold (11) is provided with a side bolt (44), and the side bolt (44) is threadedly connected in the mold core (43).

6. The luggage drawbar production and forming device according to claim 1, characterized in that: A plurality of feed pipes (45) are respectively installed on the two moulds (11), and the plurality of feed pipes (45) are respectively connected to external feed equipment.

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