Linkage cooling mechanism and barrel forming split mold comprising same

Abstract

The invention relates to the technical field of barrel forming split molds, in particular to a linkage cooling mechanism and a barrel forming split mold comprising the linkage cooling mechanism, the linkage cooling mechanism comprises a mold seat, a cooling cavity and a movable mounting groove are formed in the mold seat, and a mold body is mounted on the mold seat through a back mounting rod; a contact head is arranged at one end of a movable rod piece of the buffering mechanism, the other end of the movable rod piece is connected with a piston piece, the piston piece is provided with an annular throttling groove and fixes a back rod, the back rod is sleeved with a reset spring piece and slidably penetrates through a buffering sleeve, and the buffering sleeve is filled with hydraulic oil. According to the buffer mechanism, hydraulic oil flows through the annular throttling groove to generate damping to accurately absorb die assembly impact force, die abrasion and positioning deviation are reduced, meanwhile, a cooling system is triggered by die assembly to spray cooling liquid, die opening and liquid stopping are achieved, compared with a traditional mode, the cooling period is shortened, and the production efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of barrel body forming split molds, in particular to a linkage cooling mechanism and a barrel body forming split mold containing the mechanism. Background Art

[0002] In the field of barrel blow molding, the cooling efficiency of the split mold directly affects the production cycle and product quality. The existing technology has the following defects:

[0003] Traditional barrel-molding split molds have the problem of large mold closing impact force leading to severe mold wear, parting surface deformation and reduced positioning accuracy, and ordinary spring buffer mechanisms are prone to fatigue failure; in terms of cooling, traditional molds rely on fixed water channels to circulate cooling water, and the buffer and cooling systems mostly operate independently and lack a linkage mechanism. If electronic sensor control is used, there is a problem of low reliability in high-temperature environments, which makes it difficult to meet the current high-precision blow molding products' requirements for wall thickness uniformity and rapid differentiated cooling. Summary of the Invention

[0004] In order to overcome the above-mentioned technical problems, the purpose of the present invention is to provide a linkage cooling mechanism and a barrel body forming split mold containing the mechanism, so as to solve the problems raised in the above-mentioned background technology, such as damage caused by mold closing impact, easy failure of the buffer mechanism, low cooling efficiency and lack of linkage with the buffer system, poor electronic control reliability, etc., which make it difficult to meet the needs of high-precision blow molding products.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A linked cooling mechanism, comprising a mold body and a back mounting rod, further comprising:

[0007] The mold base is provided with a cooling cavity and a movable mounting groove inside, and the mold body is installed on the mold base through a back mounting rod; the buffer mechanism, a contact head is provided at one end of the movable rod, and the other end is connected to the piston member, the piston member is provided with an annular throttling groove and fixes the back rod, the back rod is sleeved with a reset spring member and slides through the buffer sleeve, and the buffer sleeve is filled with hydraulic oil; the linkage cooling mechanism includes a transmission component group and a cooling component group; when the mold is closed: the buffer mechanism consumes the mold closing impact energy through hydraulic damping and outputs the linear displacement of the back rod; the back rod drives the transmission component group to convert the linear displacement into the vertical movement of the movable layer plate; the movable layer plate triggers the cooling component group to conduct the coolant passage; when the mold is opened: the reset spring member drives the back rod to reset, and the coolant passage is linked to close.

[0008] Preferably, the transmission component group includes a wing plate fixed to the back rod, a rack vertically meshed with the wing plate, a gear driven by the rack, and a vertical shaft rod, an upper shaft rod, and a screw rod that are linked in sequence, and the screw rod is connected to the dynamic layer plate through a nut pair.

[0009] Preferably, the cooling component group includes: a movable end head, which is connected to the cooling liquid source through a liquid pipe joint and has a blocking block abutted by a spring inside; a fixed end head, which has a built-in core rod and a plate ring with a leakage hole, connecting the horizontal liquid pipe and the liquid spray nozzle; when the movable end head is inserted into the fixed end head, the core rod pushes open the blocking block to conduct the cooling liquid.

[0010] Preferably, the annular throttling grooves of the piston are evenly distributed along the circumference, and the hydraulic oil generates damping energy consumption through the throttling grooves when the mold is closed.

[0011] Preferably, the cooling component group further includes a plurality of heat-conducting copper plates arranged in the cooling cavity of the mold base, and the liquid spray nozzle sprays the cooling liquid vertically toward the heat-conducting copper plates.

[0012] Preferably, a leakage plate is provided above the heat-conducting copper plate to guide the cooling liquid flowing down from the back mounting rod to evenly cover the surface of the heat-conducting copper plate.

[0013] Preferably, a drain port is provided at the bottom of the cooling cavity, and the cooling liquid after spraying flows to the external heat dissipation equipment through the drain port to form a circulation loop.

[0014] Preferably, when the mold is opened, the reset spring member pushes the piston member to reset, the transmission component group moves in the opposite direction to separate the movable end head from the fixed end head, and the blocking block closes the coolant passage.

[0015] Preferably, the leakage plate is arranged below the mold seat groove corresponding to the back mounting rod, and a guide structure is provided on its surface for dispersing and guiding the coolant flowing through the back mounting rod to the surface of multiple thermal conductive copper plates to achieve full contact between the coolant and the thermal conductive copper plates.

[0016] A barrel body forming split die adopts the above-mentioned linkage cooling mechanism.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The buffer mechanism uses the principle of damping generated by hydraulic oil flowing through an annular throttle groove. Compared with traditional spring buffers, it can more accurately absorb the impact force of mold closing, reduce mold wear, parting surface deformation and positioning deviation, significantly extend the service life of the mold, and reduce maintenance costs and downtime;

[0019] 2. The mold closing action is deeply integrated with the cooling system. The coolant injection is triggered at the moment of mold closing to quickly dissipate heat from the mold. The coolant is cut off as soon as the mold is opened to avoid energy waste. Compared with traditional fixed water channel cooling, it can significantly shorten the cooling cycle and improve the production efficiency of barrel blow molding.

[0020] 3. The entire linkage system does not require electronic sensors and complex electronic control components. It relies on mechanical structure to achieve automatic control of buffering and cooling, avoiding the risk of electronic equipment failure in high temperature and humid environments, improving system stability and reliability, and reducing the probability of failure;

[0021] 4. Through the diversion structure of multiple heat-conducting copper plates and leakage plates, the coolant can evenly cover the key parts of the mold, achieve differentiated cooling, effectively control the uniformity of the barrel wall thickness and surface quality, and meet the production needs of high-precision blow molding products. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic structural diagram of the overall front side of the present invention;

[0023] Figure 2 It is a schematic structural diagram of the overall back side of the present invention;

[0024] Figure 3 It is a schematic diagram of the structure inside the mold base of the present invention;

[0025] Figure 4 It is a schematic cross-sectional structural diagram of the buffer mechanism part of the present invention;

[0026] Figure 5 It is a schematic structural diagram of the overall cross-section of the present invention;

[0027] Figure 6 For the present invention Figure 5 Schematic diagram of the structure at B in the middle;

[0028] Figure 7 For the present invention Figure 2 Schematic diagram of the structure at point A.

[0029] In the figure: 11. mold body; 12. back mounting rod; 13. mold base; 2. buffer mechanism; 21. moving rod; 22. piston; 23. throttle groove; 24. back rod; 25. buffer sleeve; 26. return spring; 3. linkage cooling mechanism; 31. transmission component group; 311. wing plate; 312. rack; 313. gear component; 314. vertical shaft; 315. upper shaft; 316. screw member; 317. moving layer plate; 32. cooling component group; 321. moving end; 322. liquid pipe joint; 323. blocking block; 325. fixed end; 326. core rod; 327. horizontal liquid pipe; 328. heat-conducting copper plate; 329. leakage plate. DETAILED DESCRIPTION

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] An embodiment provided by the present invention:

[0032] A linkage cooling mechanism and a barrel body forming split mold containing the mechanism, comprising a mold body 11 and a back mounting rod 12, wherein:

[0033] The mold base 13 is designed with a cooling cavity. The mold base 13 is provided with a movable mounting groove corresponding to the back mounting rod 12. The mold body 11 is mounted on the mold base 13 through the back mounting rod 12.

[0034] The buffer mechanism 2 is used to reduce the clamping force of the mold body 11. The buffer mechanism 2 includes a movable rod 21. One end of the movable rod 21 is fixedly connected to a contact head. The other end of the movable rod 21 is fixedly connected to a piston 22. The piston 22 is provided with a plurality of throttling grooves 23. The plurality of throttling grooves 23 are annularly distributed on the piston 22. The side of the piston 22 away from the movable rod 21 is fixedly connected to a back rod 24. A return spring 26 is sleeved on the back rod 24. A buffer sleeve 25 is provided on the outside of the back rod 24. The buffer sleeve 25 is in sliding contact with the movable rod 21 and the back rod 24 through a through hole. The return spring 26 is connected between the piston 22 and the buffer sleeve 25. The buffer sleeve 25 is filled with hydraulic oil.

[0035] The linked cooling mechanism 3 is used to link the buffer mechanism 2 to reduce the temperature of the mold base 13. The linked cooling mechanism 3 includes a transmission component group 31 and a cooling component group 32.

[0036] The transmission component group 31 includes a wing plate 311, which is fixedly connected to one end of the back rod 24. The wing plate 311 is fixedly connected to a rack 312 by a buckle. The rack 312 is perpendicular to the wing plate 311. The rack 312 is meshed with a gear member 313. The gear member 313 is mounted on the side of the mold base 13 through a bearing frame. A vertical shaft rod 314 is fixedly connected to the gear member 313. The vertical shaft rod 314 is mounted on the side of the mold base 13 through a bearing frame. The vertical shaft rod 314 is connected to an upper shaft rod 315 through a gear assembly. The upper shaft rod 315 is mounted on the side of the mold base 13 through a bearing frame. One end of the upper shaft rod 315 is fixedly connected to a screw member 316. The screw member 316 is mounted on the top of the mold base 13 through a bracket. The screw member 316 is connected to a dynamic layer plate 317 through a nut pair.

[0037] The cooling component group 32 includes a movable end 321, a liquid pipe joint 322 is connected to the top of the movable end 321, and the end of the liquid pipe joint 322 away from the movable end 321 is connected to the liquid storage tank, the liquid storage tank is filled with cooling liquid, the movable end 321 is fixedly connected to the movable layer 317 through a groove, an inner cylinder is installed in the movable end 321, and a blocking block 323 is slidably connected in the inner cylinder. The blocking block 323 is provided with a spring, and the spring is connected between the blocking block 323 and the inner cylinder, and the inner cylinder corresponds to The blocking block 323 is provided with a liquid outlet, which can be blocked by the blocking block 323. A fixed end head 325 is inserted into the bottom of the movable end head 321. A plate ring is connected inside the fixed end head 325. The plate ring is provided with multiple leakage holes, and a core rod 326 is fixedly connected to the plate ring. The core rod 326 is used to contact the blocking block 323. The fixed end head 325 is connected to the mold base 13 through a groove. The bottom of the fixed end head 325 is connected to a horizontal liquid pipe 327, and a liquid spray nozzle is installed at the bottom of the horizontal liquid pipe 327.

[0038] It should be noted that when the movable end 321 and the fixed end 325 are plugged in, one end of the core rod 326 will push against the blocking block 323 to retract it into the inner tube, and the spring in the inner tube will accumulate force and contract. At this time, the liquid outlet on the inner tube blocked by the blocking block 323 will not be blocked, and the flow direction of the coolant is liquid pipe joint 322, movable end 321, liquid outlet, fixed end 325, and horizontal liquid tube 327, and finally the coolant is sprayed out through the liquid nozzle at the bottom of the horizontal liquid tube 327 onto the heat-conducting copper plate 328 below.

[0039] The cooling component group 32 also includes a heat-conducting copper plate 328, which is installed in the cooling cavity of the mold base 13, and the horizontal liquid pipe 327 is also installed in the cooling cavity. The sprayed coolant will flow on the heat-conducting copper plate 328, taking away the heat on the heat-conducting copper plate 328. The coolant flowing to the bottom of the cooling cavity will be discharged into the cooling and heat dissipation equipment through the drain port at the bottom of the mold base 13, and then flow back into the liquid storage tank after cooling, completing the circulation of the coolant.

[0040] It should be noted that there are two groups of mold bodies 11 in the blow molding machine. The two groups of mold bodies 11 are combined to cooperate with the blow molding equipment to complete the blow molding production. After the blow molding of the embryo is completed, it is necessary to wait for cooling before the two combined mold bodies 11 can be opened. In the designed device, the heat of the blow-molded embryo is transferred to the mold base 13 through the mold body 11, and the mold base 13 then transfers the heat to the heat-conducting copper plate 328. The heat-conducting copper plate 328 is a multi-piece design, and then the coolant in the linkage cooling mechanism 3 is used to reduce the heat on the heat-conducting copper plate 328, so as to achieve the purpose of quickly reducing the embryo temperature in the mold body 11.

[0041] It should be noted that a leakage plate 329 is installed in the thermal copper plate 328. The leakage plate 329 is used to guide the coolant left on the groove set on the back mounting rod 12 of the mold seat 13 so that it can flow evenly to the thermal copper plate 328 below, ensuring that the coolant is in full contact with multiple groups of thermal copper plates 328.

[0042] Working principle:

[0043] When the blow molding machine drives the two sets of mold bodies 11 to close, the movable rods 21 of the two sets of buffer mechanisms 2 come into contact. As the mold closing continues, the movable rods 21 of the buffer mechanisms 2 move into the buffer sleeve 25. The piston 22 squeezes the hydraulic oil in the buffer sleeve 25. The hydraulic oil generates damping through the annular throttle groove 23, dissipating the impact energy. The movement of the piston 22 drives the back rod 24 to push the wing plate 311, causing the rack 312 to move linearly and drive the gear 313 to rotate. The gear 313 drives the upper shaft 315 to rotate through the vertical shaft 314 and the gear assembly. The upper shaft 315 drives the screw rod 316 to rotate, which in turn drives the movable layer plate 317 vertically downward through the nut pair.

[0044] The movable plate 317 pushes the movable end 321 of the cooling component assembly 32 downward and inserts it into the fixed end 325. At this point, the core rod 326 inside the fixed end 325 pushes against the stopper 323 inside the end 321, compressing the spring and exposing the inner cylinder's liquid outlet. Coolant from the reservoir flows through the liquid pipe connector 322 into the movable end 321, then through the liquid outlet into the fixed end 325. It then flows through the plate ring's leakage holes to the horizontal liquid pipe 327, and finally, is sprayed vertically by the liquid nozzle onto the multiple heat-conducting copper plates 328 within the cooling cavity of the mold base 13. The movable mounting groove outside the back mounting rod 12 will block part of the coolant. The coolant under the back mounting rod 12 flows evenly through the surface of all the heat-conducting copper plates 328 under the guidance of the leakage plate 329. This design is to redistribute the coolant to multiple groups of heat-conducting copper plates 328, absorb the heat conducted from the mold body 11 to the mold base 13 through the back mounting rod 12, and the heated coolant flows out from the drain port at the bottom of the cooling cavity, and after being cooled by the external heat dissipation equipment, it flows back to the liquid storage tank for circulation.

[0045] When the mold is opened, the return spring 26 of the buffer mechanism 2 pushes the piston 22 back, driving the back rod 24 and the wing plate 311 in the opposite direction. The rack 312 drives the gear 313 in reverse, causing the screw 316 to move the movable plate 317 upward, and the movable end 321 disengages from the fixed end 325. At this point, the stopper 323, under the action of the spring, moves forward to close the inner cylinder's liquid outlet, automatically shutting off the coolant. This completes a single operating cycle, achieving purely mechanical linkage control of triggering cooling during mold closing and shutting off the coolant during mold opening.

[0046] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A linkage cooling mechanism comprising a mold body and a back mounting rod, characterized in that: Also includes: A mold base, which has a cooling cavity and a movable mounting groove inside, and the mold body is mounted on the mold base through a back mounting rod; The buffer mechanism has a movable rod with a contact head at one end and a piston at the other end. The piston is provided with an annular throttle groove and fixes a back rod. The back rod is sleeved with a return spring and slides through a buffer sleeve. The buffer sleeve is filled with hydraulic oil. A linked cooling mechanism, comprising a transmission component group and a cooling component group; During mold closing, the buffer mechanism consumes the mold closing impact energy through hydraulic damping and outputs the linear displacement of the back rod; the back rod drives the transmission component group to convert the linear displacement into the vertical movement of the dynamic layer; the dynamic layer triggers the cooling component group to conduct the coolant passage; When the mold is opened: the reset spring drives the back rod to reset, and the coolant passage is closed in conjunction.

2. A linkage cooling mechanism according to claim 1, characterized in that: The transmission component group includes a wing plate fixed to the back rod, a rack vertically meshed with the wing plate, a gear driven by the rack, and a vertical shaft rod, an upper shaft rod, and a screw rod that are linked in sequence. The screw rod is connected to the dynamic layer plate through a nut pair.

3. The linkage cooling mechanism according to claim 1, characterized in that: The cooling component group includes: a movable end head, which is connected to the cooling liquid source through a liquid pipe joint and has a blocking block abutted by a spring inside; a fixed end head, which has a built-in core rod and a plate ring with a leakage hole, and is connected to the horizontal liquid pipe and the liquid spray nozzle; when the movable end head is inserted into the fixed end head, the core rod pushes open the blocking block to conduct the cooling liquid.

4. The linkage cooling mechanism according to claim 1, characterized in that: The annular throttling grooves of the piston member are evenly distributed along the circumference, and the hydraulic oil flows through the throttling grooves to generate damping energy consumption when the mold is closed.

5. The linkage cooling mechanism according to claim 3, characterized in that: The cooling component group further includes a plurality of heat-conducting copper plates arranged in the cooling cavity of the mold base, and the liquid spraying nozzle sprays the cooling liquid vertically toward the heat-conducting copper plates.

6. The linkage cooling mechanism according to claim 5, characterized in that: A liquid leakage plate is provided above the heat-conducting copper plate to guide the cooling liquid flowing down from the back mounting rod to evenly cover the surface of the heat-conducting copper plate.

7. The linkage cooling mechanism according to claim 5, characterized in that: A drain port is provided at the bottom of the cooling cavity, and the cooling liquid after spraying flows to the external heat dissipation equipment through the drain port to form a circulation loop.

8. The linkage cooling mechanism according to claim 1, characterized in that: When the mold is opened, the reset spring pushes the piston to reset, the transmission component group moves in the opposite direction to separate the movable end from the fixed end, and the blocking block closes the coolant passage.

9. The linkage cooling mechanism according to claim 6, characterized in that: The leakage plate is arranged below the mold seat groove corresponding to the back mounting rod, and a guide structure is provided on its surface for dispersing and guiding the coolant flowing through the back mounting rod to the surface of multiple heat-conducting copper plates, thereby achieving full contact between the coolant and the heat-conducting copper plates.

10. A barrel forming split mold, characterized by: The linkage cooling mechanism described in any one of claims 1 to 9 is adopted.

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