Medical transparent injection needle cylinder injection mold and production process thereof

Abstract

The invention relates to the technical field of injection needle cylinders, in particular to a medical transparent injection needle cylinder injection mold and a production process thereof. The medical transparent injection needle cylinder injection mold comprises a base, supporting plates are arranged at the top ends of the left side wall and the right side wall of the top end of the base correspondingly, and a top plate is arranged at the top ends of the supporting plates; the injection molding device is arranged between the supporting plates, the cooling device is arranged on the left side of the base, the demolding device is arranged above the cooling device, the injection molding device is used for injection molding of a needle cylinder, the cooling device is used for cooling the injection molding device, and then the cooling molding efficiency is improved; and the demolding device is arranged above the cooling device, the demolding device is used for demolding the needle cylinder, through arrangement of a detachable lower mold, the lower mold is taken out of the fixing groove after forming is finished, the forming base and the forming block are detached, and therefore demolding and material taking can be conveniently conducted on the needle cylinder formed in the forming groove.

Description

Technical Field

[0001] The invention relates to the technical field of injection syringes, in particular to a medical transparent injection syringe injection mold and a production process thereof. Background Art

[0002] Medical transparent injection syringes are widely used in the medical field. In recent years, with the gradual strengthening of precision-grade plastic molds, the output of plastic products has increased, and the precision requirements have become higher and higher, especially the requirements for plastic molds in the medical industry have become higher and higher. The plastic molds used to produce plastic products are an indispensable and important part of the entire production process of plastic products. The structure of the mold has a direct impact on product quality and the production process. The current syringe mold has a small number of products that can be molded at one time, and the production efficiency is low. Moreover, it is generally a cold runner mold with a long molding cycle. The injection gate is set on the barrel of the syringe. The barrel is prone to cracking due to stress. The hot runner for injection has no protection measures and is easy to damage. The flow of plastic is not smooth, and there are many gate residues.

[0003] For example, a "six-cavity syringe mold" disclosed in a Chinese patent document, with announcement number CN205631268U, includes a nozzle body and six molding components, the six molding components are evenly distributed on the periphery of the nozzle body, and six beryllium copper heads are evenly distributed on the rear part of the nozzle body. The six molding components are respectively connected to the six beryllium copper heads one by one, and each molding component includes a front mold core, a rear mold core and an inner core. The front mold core is provided with a front mold top insert, and the front mold core, the rear mold core and the front mold top insert cooperate to form a cavity. The inner core is inserted in the cavity, and a main hot runner is provided on the nozzle body. Six branch runners are provided at the bottom of the main hot runner. The beryllium copper head consists of an annular shell and a glue injection core. The outer end of the glue injection core is connected to the rear end of the cavity, and each glue injection core is provided with a glue injection channel inside, which is connected to the cavity, and each branch runner and each glue injection channel are respectively arranged obliquely. Although the six-cavity syringe mold has concealed gates, small gate marks, short molding cycle, high molding efficiency, and small mold volume, when the mold is injected, due to the small volume of the syringe, the syringe and the upper mold core are not separated in time during the demolding process of the syringe, which affects the demolding efficiency. Summary of the invention

[0004] 1. Technical issues to be solved

[0005] In view of the deficiencies in the prior art, the present invention provides a medical transparent injection syringe injection mold and a production process thereof.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a medical transparent injection syringe injection mold, comprising a base, support plates are respectively arranged at the top of the left and right side walls of the top of the base, a top plate is arranged at the top of the support plates, and also comprises an injection molding device arranged between the support plates, a cooling device arranged on the left side of the base, and a demolding device arranged above the cooling device, wherein the injection molding device is used for injection molding of the syringe, the cooling device is used for cooling the injection molding device, thereby improving the cooling molding efficiency, and a demolding device is arranged above the cooling device, wherein the demolding device is used for demolding the syringe;

[0008] The injection molding device includes a fixed seat, a lower mold, an upper mold and a fixed plate. A fixed seat is arranged between the support plates. A plurality of fixed grooves are arranged in a ring shape on the top of the fixed seat. A detachable lower mold is slidably arranged in the fixed groove. A molding groove is arranged on the top of the lower mold. The support plate is located above the fixed seat and a fixed plate is slidably arranged. A fixed column is arranged at the bottom of the fixed plate. A fixed plate is fixedly arranged at the bottom of the fixed column. An upper mold is arranged at a position corresponding to the fixed groove at the bottom of the fixed plate. The upper mold is adapted to the molding groove. A fixed hydraulic rod is arranged between the fixed plate and the top plate. A discharging device is arranged at the bottom of the fixed seat. The discharging device is used to control the lower mold to discharge from the fixed groove.

[0009] In order to facilitate the assembly and separation of the lower mold, and thus facilitate the demolding and taking of the needle tube formed in the lower mold, the present invention is improved in that the lower mold includes a molding seat, a molding block, a limiting column, a limiting block, a limiting disk and a torsion spring, a transverse groove is arranged on the right side wall of the molding block, the top of the transverse groove passes through the top of the molding seat, the molding block is slidably arranged in the transverse groove, a first limiting groove is arranged on the bottom end of the right side wall of the molding block, a second limiting groove is arranged on the left side wall of the first limiting groove, a limiting column is rotatably arranged at the bottom end of the transverse groove corresponding to the first limiting groove, a limiting block is fixedly arranged at the side wall of the limiting column corresponding to the second limiting groove, a third limiting groove is arranged at the bottom end of the molding seat, a limiting rod is rotatably arranged at the bottom of the third limiting groove, the top of the limiting rod is fixedly connected to the limiting column, the bottom end of the limiting rod is fixedly provided with a limiting disk, a torsion spring is mounted on the surface of the limiting rod, and both ends of the torsion spring are respectively connected to the limiting disk and the bottom of the third limiting groove.

[0010] In order to improve the sealing performance between the forming seat and the forming block and avoid the separation of the forming seat and the forming block during the forming process, which may lead to quality problems in the needle tube production, the present invention has the following improvements: the right side wall of the forming seat is located at the front and rear sides of the forming groove and the first slide groove is respectively provided with a first slide groove, the left ends of the side walls on the front and rear sides of the first slide groove are respectively provided with a second slide groove, a first slider is provided at a position corresponding to the first slide groove of the left side wall of the forming block, and a second slider is provided at a position corresponding to the second slide groove on the side walls on the front and rear sides of the first slider, the first slider is slidably connected to the first slide groove, and the second slider is slidably connected to the second slide groove.

[0011] In order to facilitate cooling of the molten raw material in the molding tank, thereby improving the molding efficiency, the present invention is improved in that the cooling device includes a water tank, a water pump, a fan, a first heat exchange tube and a second heat exchange tube, the fixed seat is located at the peripheral side of the fixed tank and a jacket is arranged, and connecting pipes are respectively arranged between the upper and lower sides of the side walls between the jackets, a water tank is arranged on the left side of the base, a water pump is arranged at the top of the water tank, the water pump input end is connected to the water tank, and the water pump output end is connected to the jacket, a first heat exchange tube is arranged at the middle position of the top of the water tank, the top of the first heat exchange tube is sealed, and the second heat exchange tube is fixedly arranged at the middle position of the top of the first heat exchange tube, the bottom end of the second heat exchange tube is connected to the water tank, a spiral rod is arranged at the corresponding position of the top of the first heat exchange tube and the second heat exchange tube, and the bottom end of the spiral rod is flush with the second heat exchange tube, a reflux pipe is arranged between the second heat exchange tube and the upper side wall of the jacket, a fan is arranged at the top of the water tank, the fan input end is connected to the external environment, and the fan output end is connected to the bottom end of the first heat exchange tube, and an air outlet is arranged at the top of the left side wall of the first heat exchange tube.

[0012] In order to avoid adhesion between the molded syringe and the upper mold, thereby improving the demolding effect, the present invention has improvements in that the demolding device includes a support frame, a demolding material box, a material pump and a nozzle, a support frame is arranged above the water tank, a demolding material box is arranged on the top of the support frame, a material pump is arranged on the top of the demolding material box, a nozzle is arranged at the right side wall of the support plate on the left side of the base corresponding to the upper mold, the material pump input end is connected with the demolding material box, and the material pump output end is connected with the nozzle.

[0013] In order to facilitate the comprehensive spraying of the release agent on the upper mold, thereby further improving the demoulding effect, the present invention is improved in that the fixed column is rotatably connected to the fixed plate, the top end of the side wall of the fixed column is evenly distributed with protrusions, the bottom end of the fixed plate is located at the right side of the fixed column and a driving gear is rotatably arranged, the driving gear is meshed with the protrusion, a driving motor is arranged at the corresponding position of the top of the fixed plate and the driving gear, the output end of the driving motor is connected with the driving gear, a first cavity is arranged in the middle position of the fixed disk, the fixed disk is arranged at the periphery of the first cavity, the first cavity is connected with the second cavity, a first gear is rotatably arranged in the first cavity, a positioning rod is fixedly arranged at the top end of the first gear, the top end of the positioning rod passes through the fixed column and is fixedly connected to the fixed plate, the positioning rod is rotatably connected to the fixed column, a second gear is rotatably arranged in the second cavity, the first gear is meshed with the second gear, the top end of the upper mold is fixedly connected to the second gear, and the upper mold is rotatably connected to the fixed disk.

[0014] In order to facilitate the removal of the lower mold from the fixed groove after the molding is completed and improve the convenience of operation, the present invention has been improved in that the discharging device includes a discharging plate, a discharging column and a discharging hydraulic rod, the fixed seat is slidably connected to the support plate, a discharging hydraulic rod is arranged between the bottom end of the fixed seat and the base, the discharging plate is slidably arranged in the fixed groove, a fixing hole is arranged at the bottom of the fixed groove, a discharging column is fixedly arranged at a position corresponding to the bottom end of the discharging plate and the fixing hole, and the bottom end of the discharging column is fixedly connected to the base through the fixing hole.

[0015] The present invention further provides a production process for a medical transparent injection syringe injection mold, comprising the following steps:

[0016] S1: Assembly of the upper mold: the operator rotates the limit plate, thereby driving the limit block to move around the limit column through the limit rod and the limit column, so that the limit block moves to the rear side of the limit column, and then the operator extends the forming block into the transverse groove through the cooperation of the first slide groove and the first slider, the second slide groove and the second slider, and then the operator releases the limit plate, thereby driving the limit plate to reset under the action of the torsion spring, thereby controlling the limit block to move to the second limit groove through the limit rod and the limit column, thereby completing the limitation of the forming block through the cooperation of the second limit groove and the limit block, and at the same time, the lower mold is assembled through the cooperation of the first slide groove and the first slider, the second slide groove and the second slider, and the lower mold after assembly is placed in the fixed groove on the surface of the fixed seat;

[0017] S2: Spraying of release agent: The operator controls the driving motor to work, thereby driving the fixed column and the fixed plate to rotate through the meshing of the driving gear and the protrusion, thereby driving the upper mold to move around the fixed column, and at the same time, the upper mold is driven to rotate through the meshing of the second gear and the first gear. At the same time, the operator controls the material pump to work, thereby spraying the release agent to the upper mold surface through the nozzle;

[0018] S3: Injection molding: The operator adds molten raw materials into the molding groove, and then the operator controls the fixed hydraulic rod to work, so that the fixed plate and the fixed column drive the fixed plate to buckle on the surface of the fixed seat, and at the same time make the upper mold extend into the molding groove;

[0019] S4: Cooling and molding: The operator controls the water pump to pump the cooling water in the water tank into the jacket to exchange heat with the lower mold, thereby increasing the molding rate of the raw material in the molding tank of the lower mold. The cooling water after heat exchange enters the second heat exchange pipe through the return pipe, and then returns to the water tank through the second heat exchange pipe. In the process of the cooling water passing through the second heat exchange pipe, the operator controls the fan to control the air in the external environment to quickly pass through the first heat exchange pipe, thereby exchanging heat with the cooling water through the second heat exchange pipe, thereby reducing the temperature of the cooling water returning to the water tank;

[0020] S5: Discharging: After the raw material is cooled and formed, the operator controls the fixed hydraulic rod to work, thereby driving the fixed plate and the upper mold to reset. At the same time, the operator controls the discharging hydraulic rod to work, thereby driving the fixed seat to move downward, so that the lower mold is pushed out of the fixed groove through the discharging column and the discharging plate;

[0021] S6: Demolding: The operator rotates the limit plate, thereby driving the limit block to move out of the second limit groove through the limit rod and the limit column. Then the operator pulls the molding seat and the molding block in opposite directions respectively, so as to facilitate the control of the molding block to detach from the surface of the molding seat, thereby facilitating the demolding of the cooled and molded syringe.

[0022] (III) Beneficial effects

[0023] Compared with the prior art, the present invention provides a medical transparent injection syringe injection mold and a production process thereof, which have the following beneficial effects:

[0024] The medical transparent injection syringe injection mold is provided with a detachable lower mold. After molding is completed, the lower mold is taken out from the fixed groove, and the molding seat and the molding block are disassembled, so that the syringe molded in the molding groove can be demoulded and the material can be taken out.

[0025] By setting up the cooling device, it is convenient to exchange heat with the molten raw material in the molding tank through the cooling water through the jacket and the lower mold, so as to facilitate cooling the molten raw material in the molding tank, thereby improving the molding efficiency of the syringe.

[0026] By setting up the demoulding device, it is convenient to avoid adhesion between the molded syringe and the upper mold, thereby improving the demoulding effect.

[0027] By setting the first gear, the second gear and the driving gear, the upper mold can be moved around the fixed column and the upper mold can be rotated by the meshing of the second gear and the first gear, so that the release agent can be fully sprayed on the upper mold surface through the nozzle, thereby further improving the demoulding effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the structure of the present invention;

[0029] Figure 2 It is a schematic diagram of the three-dimensional structure of the present invention;

[0030] Figure 3 It is a schematic diagram of the cross-sectional structure of the present invention;

[0031] Figure 4 This is a structural schematic diagram of the second heat exchange tube of the present invention;

[0032] Figure 5 This is a schematic diagram of the lower mold structure of the present invention;

[0033] Figure 6 This is a schematic diagram of the cross-sectional structure of the lower mold of the present invention;

[0034] In the figure: 1. base; 2. support plate; 3. top plate; 4. fixed seat; 5. lower mold; 6. upper mold; 7. fixed plate; 8. fixed groove; 9. fixed column; 10. fixed plate; 11. fixed hydraulic rod; 12. forming seat; 13. forming block; 14. limiting column; 15. limiting block; 16. limiting plate; 17. torsion spring; 18. first slider; 19. second slider; 20. water tank; 21. water pump; 22. fan; 23. first heat exchange tube; 24. second heat exchange tube; 25. jacket; 26. support frame; 27. demoulding material box; 28. material pump; 29. ​​nozzle; 30. driving gear; 31. driving motor; 32. first gear; 33. positioning rod; 34. second gear; 35. discharge plate; 36. discharge column; 37. discharge hydraulic rod. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0036] See also Figure 1-6 , a medical transparent injection syringe injection mold, comprising a base 1, support plates 2 are respectively arranged at the top of the left and right side walls of the top of the base 1, a top plate 3 is arranged at the top of the support plate 2, and also comprises an injection molding device arranged between the support plates 2, a cooling device arranged on the left side of the base 1 and a demoulding device arranged above the cooling device, the injection molding device is used for injection molding of the syringe, the cooling device is used for cooling the injection molding device, thereby improving the cooling molding efficiency, and a demoulding device is arranged above the cooling device, and the demoulding device is used for demoulding the syringe;

[0037] The injection molding device includes a fixed seat 4, a lower mold 5, an upper mold 6 and a fixed plate 7. The fixed seat 4 is arranged between the support plates 2. The top of the fixed seat 4 is provided with multiple groups of fixed grooves 8 in a ring shape. A detachable lower mold 5 is slidably arranged in the fixed groove 8. A molding groove is arranged on the top of the lower mold 5. The support plate 2 is located above the fixed seat 4 and a fixed plate 7 is slidably arranged. A fixed column 9 is arranged at the bottom of the fixed plate 7. A fixed plate 10 is fixedly arranged at the bottom of the fixed column 9. An upper mold 6 is arranged at a position corresponding to the fixed groove 8 at the bottom of the fixed plate 10. The upper mold 6 is adapted to the molding groove. A fixed hydraulic rod 11 is arranged between the fixed plate 7 and the top plate 3. A discharging device is arranged at the bottom of the fixed seat 4. The discharging device is used to control the lower mold 5 to discharge from the fixed groove 8.

[0038] During use, it is inconvenient to take the formed syringe out of the forming groove. For this reason, the lower mold 5 includes a forming seat 12, a forming block 13, a limiting column 14, a limiting block 15, a limiting disk 16 and a torsion spring 17. A transverse groove is arranged on the right side wall of the forming block 13, and the top of the transverse groove passes through the top of the forming seat 12. The forming block 13 is slidably arranged in the transverse groove. A first limiting groove is arranged on the bottom end of the right side wall of the forming block 13, and a second limiting groove is arranged on the left side wall of the first limiting groove. A limiting column 14 is rotatably provided at the bottom end of the transverse groove corresponding to the first limiting groove, a limiting block 15 is fixedly provided on the side wall of the limiting column 14 corresponding to the second limiting groove, a third limiting groove is provided at the bottom end of the forming seat 12, a limiting rod is rotatably provided at the bottom of the third limiting groove, the top end of the limiting rod is fixedly connected to the limiting column 14, a limiting disk 16 is fixedly provided at the bottom end of the limiting rod, a torsion spring 17 is mounted on the surface of the limiting rod, and the two ends of the torsion spring 17 are respectively connected to the limiting disk 16 and the bottom of the third limiting groove. After the syringe is formed, the operator rotates the limiting disk 16, thereby driving the limiting block 15 to move out of the second limiting groove through the limiting rod and the limiting column 14, and then the operator pulls the forming seat 12 and the forming block 13 in opposite directions, respectively, so as to facilitate the control of the forming block 13 to detach from the surface of the forming seat 12, thereby facilitating the demoulding of the cooled and formed syringe.

[0039] The separation of the forming seat 12 and the forming block 13 during the forming process may cause quality problems in the production of needle tubes. At the same time, the gap between the forming seat 12 and the forming block 13 is prone to the risk of raw material leakage. For this reason, the right side wall of the forming seat 12 is respectively provided with a first slide groove on both sides of the front and rear of the forming groove, and the left ends of the side walls on the front and rear sides of the first slide groove are respectively provided with a second slide groove. A first slider 18 is provided at a position corresponding to the first slide groove of the left side wall of the forming block 13, and a second slider 19 is provided at a position corresponding to the second slide groove on the side walls on the front and rear sides of the first slider 18. The first slider 18 is slidably connected to the first slide groove, and the second slider 19 is slidably connected to the second slide groove, so as to improve the sealing performance between the forming seat 12 and the forming block 13, and at the same time avoid the separation of the forming seat 12 and the forming block 13 during the forming process, which may cause quality problems in the production of needle tubes.

[0040] The natural cooling time of the molten raw material in the molding tank is relatively long, which will affect the production efficiency of the syringe. For this reason, the cooling device includes a water tank 20, a water pump 21, a fan 22, a first heat exchange tube 23 and a second heat exchange tube 24. The fixed seat 4 is provided with a jacket 25 on the side of the fixed tank 8. Connecting pipes are respectively provided between the upper and lower sides of the side wall of the jacket 25. The water tank 20 is provided on the left side of the base 1. The water pump 21 is provided at the top of the water tank 20. The input end of the water pump 21 is connected to the water tank 20, and the output end of the water pump 21 is connected to the jacket 25. The first heat exchange tube 23 is provided in the middle of the top of the water tank 20. The top of the first heat exchange tube 23 is sealed, and the second heat exchange tube 24 is fixedly arranged in the middle position of the top of the first heat exchange tube 23, and the bottom end of the second heat exchange tube 24 is connected with the water tank 20. A spiral rod is arranged at the corresponding position of the top of the first heat exchange tube 23 and the second heat exchange tube 24, and the bottom end of the spiral rod is flush with the second heat exchange tube 24. A reflux pipe is arranged between the second heat exchange tube 24 and the upper side wall of the jacket 25, and a fan 22 is arranged at the top of the water tank 20. The input end of the fan 22 is connected to the external environment, and the output end of the fan 22 is connected with the bottom end of the first heat exchange tube 23. An air outlet is arranged at the top of the left side wall of the first heat exchange tube 23. The operator controls the water pump 21 to work, so that the cooling water pump 21 in the water tank 20 is pumped into the jacket 25 to exchange heat with the lower mold 5, thereby improving the molding rate of the raw material in the molding groove of the lower mold 5. The cooling water after heat exchange enters the second heat exchange pipe 24 through the reflux pipe, and then returns to the water tank 20 through the second heat exchange pipe 24. At the same time, as the heat exchange proceeds, the temperature of the cooling water will gradually increase, thereby affecting the cooling efficiency of the molten raw material. For this reason, in the process of the cooling water passing through the second heat exchange pipe 24, the operator controls the fan 22 to work, thereby controlling the air in the external environment to quickly pass through the first heat exchange pipe 23, thereby exchanging heat with the cooling water through the second heat exchange pipe 24, thereby reducing the temperature of the cooling water returning to the water tank 20, thereby avoiding the gradual increase in the temperature of the cooling water in the water tank 20.

[0041] The molded syringe is prone to adhesion to the upper mold 6, which affects the demoulding effect. For this reason, the demoulding device includes a support frame 26, a demoulding material box 27, a material pump 28 and a nozzle 29. The support frame 26 is arranged above the water tank 20, and the demoulding material box 27 is arranged on the top of the support frame 26. The material pump 28 is arranged on the top of the demoulding material box 27. The nozzle 29 is arranged at the right side wall of the support plate 2 on the left side of the base 1 corresponding to the upper mold 6. The input end of the material pump 28 is connected with the demoulding material box 27, and the output end of the material pump 28 is connected with the nozzle 29, so as to avoid adhesion between the molded syringe and the upper mold 6, thereby improving the demoulding effect. The operator controls the material pump 28 to work, so as to spray the demoulding agent on the surface of the upper mold 6 through the nozzle 29, so as to avoid adhesion between the molded syringe and the upper mold 6.

[0042] During the spraying process, since the upper mold 6 is located on one side of the nozzle 29, only the left side wall of the upper mold 6 will be sprayed, and comprehensive spraying cannot be performed. For this reason, the fixed column 9 is rotatably connected to the fixed plate 7, and the top of the side wall of the fixed column 9 is evenly distributed with protrusions. The bottom end of the fixed plate 7 is located on the right side of the fixed column 9 and a driving gear 30 is rotatably set. The driving gear 30 is meshed with the protrusions. A driving motor 31 is set at a position corresponding to the top of the fixed plate 7 and the driving gear 30. The output end of the driving motor 31 is connected to the driving gear 30. A first cavity is set in the middle position of the fixed disk 10, and a second cavity is set on the fixed disk 10 on the periphery of the first cavity. The first cavity is connected to the second cavity. A first gear 32 is rotatably set in the first cavity, and a positioning rod 3 is fixedly set on the top of the first gear 32 3. The top end of the positioning rod 33 passes through the fixed column 9 and is fixedly connected to the fixed plate 7. The positioning rod 33 is rotatably connected to the fixed column 9. The second cavity is rotatably provided with a second gear 34. The first gear 32 is meshed with the second gear 34. The top end of the upper mold 6 is fixedly connected to the second gear 34. The upper mold 6 is rotatably connected to the fixed disk 10. During the spraying process, the operator controls the driving motor 31 to work, thereby driving the fixed column 9 and the fixed disk 10 to rotate through the meshing of the driving gear 30 and the protrusion, thereby driving the upper mold 6 to move around the fixed column 9, and at the same time, the upper mold 6 is driven to rotate through the meshing of the second gear 34 and the first gear 32. At the same time, the operator controls the material pump 28 to work, thereby comprehensively spraying the release agent to the surface of the upper mold 6 through the nozzle 29.

[0043] The discharging device includes a discharging plate 35, a discharging column 36 and a discharging hydraulic rod 37. The fixed seat 4 is slidably connected to the support plate 2. A discharging hydraulic rod 37 is arranged between the bottom end of the fixed seat 4 and the base 1. The discharging plate 35 is slidably arranged in the fixed groove 8. A fixing hole is arranged at the bottom of the fixed groove 8. A discharging column 36 is fixedly arranged at a position corresponding to the bottom end of the discharging plate 35 and the fixing hole. The bottom end of the discharging column 36 is fixedly connected to the base 1 through the fixing hole, so that the fixed seat 4 can be driven downward by the operation of the discharging hydraulic rod 37, so that the lower mold 5 can be ejected from the fixed groove 8 by the discharging plate 35 and the discharging column 36, so that the lower mold 5 can be taken out of the fixed groove 8 after the molding is completed, thereby improving the convenience of operation.

[0044] The present invention further provides a production process for a medical transparent injection syringe injection mold, comprising the following steps:

[0045] S1: Assembly of the upper mold 6: The operator rotates the limit plate 16, thereby driving the limit block 15 to move around the limit column 14 through the limit rod and the limit column 14, so that the limit block 15 moves to the rear side of the limit column 14, and then the operator extends the forming block 13 into the transverse groove through the cooperation of the first slide groove and the first slider 18, the second slide groove and the second slider 19, and then the operator releases the limit plate 16, thereby driving the limit plate 16 to reset under the action of the torsion spring 17, thereby controlling the limit block 15 to move into the second limit groove through the limit rod and the limit column 14, thereby completing the limitation of the forming block 13 through the cooperation of the second limit groove and the limit block 15, and at the same time, the lower mold 5 is assembled through the cooperation of the first slide groove and the first slider 18, the second slide groove and the second slider 19, and the lower mold 5 after assembly is placed in the fixed groove 8 on the surface of the fixed seat 4;

[0046] S2: Spraying of release agent: The operator controls the driving motor 31 to work, thereby driving the fixed column 9 and the fixed plate 10 to rotate through the meshing of the driving gear 30 and the protrusion, thereby driving the upper mold 6 to move around the fixed column 9, and at the same time, the upper mold 6 is driven to rotate through the meshing of the second gear 34 and the first gear 32. At the same time, the operator controls the material pump 28 to work, thereby spraying the release agent on the surface of the upper mold 6 through the nozzle 29;

[0047] S3: Injection molding: The operator adds molten raw materials into the molding groove, and then the operator controls the fixed hydraulic rod 11 to work, so that the fixed plate 10 and the fixed column 9 drive the fixed plate 10 to buckle on the surface of the fixed seat 4, and at the same time make the upper mold 6 extend into the molding groove;

[0048] S4: Cooling and molding: The operator controls the water pump 21 to work, so that the cooling water pump 21 in the water tank 20 is pumped into the jacket 25 to exchange heat with the lower mold 5, thereby increasing the molding rate of the raw material in the molding tank of the lower mold 5. The cooling water after heat exchange enters the second heat exchange pipe 24 through the return pipe, and then returns to the water tank 20 through the second heat exchange pipe 24. In the process of the cooling water passing through the second heat exchange pipe 24, the operator controls the fan 22 to work, thereby controlling the air in the external environment to quickly pass through the first heat exchange pipe 23, so as to exchange heat with the cooling water through the second heat exchange pipe 24, thereby reducing the temperature of the cooling water returning to the water tank 20;

[0049] S5: Discharging: After the raw material is cooled and formed, the operator controls the fixed hydraulic rod 11 to work, thereby driving the fixed plate 10 and the upper mold 6 to reset, and at the same time, the operator controls the discharging hydraulic rod 37 to work, thereby driving the fixed seat 4 to move downward, so as to push the lower mold 5 out of the fixed groove 8 through the discharging column 36 and the discharging plate 35;

[0050] S6: Demolding: The operator rotates the limit plate 16, thereby driving the limit block 15 to move out of the second limit groove through the limit rod and the limit column 14, and then the operator pulls the molding seat 12 and the molding block 13 in opposite directions respectively, so as to facilitate the control of the molding block 13 to detach from the surface of the molding seat 12, thereby facilitating the demolding of the cooled and molded syringe.

[0051] The electrical components mentioned in this article are all connected to an external main controller and 220V mains electricity, and the main controller can be a conventional known device for controlling a computer or the like.

[0052] In the description of this article, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, a direct connection, or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0053] In the description of this article, it should be noted that relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0054] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A medical transparent injection syringe injection mold, comprising a base (1), the top of the left and right side walls of the top of the base (1) are respectively provided with support plates (2), the top of the support plate (2) is provided with a top plate (3), characterized in that: Also includes: An injection molding device arranged between the support plates (2), the injection molding device being used for injection molding the syringe; A cooling device is arranged on the left side of the base (1), and is used to cool the injection molding device, thereby improving the cooling molding efficiency; A demoulding device is arranged above the cooling device, and is used to demould the syringe; The injection molding device comprises a fixed seat (4), a lower mold (5), an upper mold (6) and a fixed plate (7); a fixed seat (4) is arranged between the support plates (2); a plurality of groups of fixed grooves (8) are arranged in an annular shape at the top of the fixed seat (4); a detachable lower mold (5) is slidably arranged in the fixed groove (8); a molding groove is arranged at the top of the lower mold (5); the support plate (2) is located above the fixed seat (4) and a fixed plate (7) is slidably arranged; a fixed column (9) is arranged at the bottom end of the fixed plate (7); a fixed plate (10) is fixedly arranged at the bottom end of the fixed column (9); an upper mold (6) is arranged at a position corresponding to the fixed groove (8) at the bottom end of the fixed plate (10); the upper mold (6) is adapted to the molding groove; a fixed hydraulic rod (11) is arranged between the fixed plate (7) and the top plate (3); a discharging device is arranged at the bottom end of the fixed seat (4); the discharging device is used to control the lower mold (5) to discharge from the fixed groove (8).

2. The medical transparent injection syringe injection mold according to claim 1, characterized in that: The lower mold (5) comprises a molding seat (12), a molding block (13), a limiting column (14), a limiting block (15), a limiting plate (16) and a torsion spring (17); a transverse groove is arranged on the right side wall of the molding block (13); the top end of the transverse groove passes through the top end of the molding seat (12); the molding block (13) is slidably arranged in the transverse groove; a first limiting groove is arranged on the bottom end of the right side wall of the molding block (13); a second limiting groove is arranged on the left side wall of the first limiting groove; the bottom end of the transverse groove corresponds to the first limiting groove A limit column (14) is rotatably arranged at a position, a limit block (15) is fixedly arranged at a position corresponding to a side wall of the limit column (14) and the second limit groove, a third limit groove is arranged at the bottom end of the forming seat (12), a limit rod is rotatably arranged at the bottom of the third limit groove, the top end of the limit rod is fixedly connected to the limit column (14), a limit plate (16) is fixedly arranged at the bottom end of the limit rod, a torsion spring (17) is mounted on the surface of the limit rod, and two ends of the torsion spring (17) are respectively connected to the limit plate (16) and the bottom of the third limit groove.

3. The medical transparent injection syringe injection mold according to claim 2, characterized in that: The right side wall of the forming seat (12) is respectively provided with a first slide groove at the front and rear sides of the forming groove, and the left ends of the side walls on the front and rear sides of the first slide groove are respectively provided with a second slide groove, and a first slider (18) is provided at a position corresponding to the first slide groove on the left side wall of the forming block (13), and a second slider (19) is provided at a position corresponding to the second slide groove on the side walls on the front and rear sides of the first slider (18), the first slider (18) is slidably connected to the first slide groove, and the second slider (19) is slidably connected to the second slide groove.

4. The medical transparent injection syringe injection mold according to claim 3, characterized in that: The cooling device comprises a water tank (20), a water pump (21), a fan (22), a first heat exchange tube (23) and a second heat exchange tube (24); a jacket (25) is arranged on the peripheral side of the fixing seat (4) and the fixing groove (8); connecting pipes are arranged between the upper and lower sides of the side wall of the jacket (25); a water tank (20) is arranged on the left side of the base (1); a water pump (21) is arranged at the top of the water tank (20); an input end of the water pump (21) is connected to the water tank (20); an output end of the water pump (21) is connected to the jacket (25); a first heat exchange tube (23) is arranged at the middle position of the top of the water tank (20); the top of the first heat exchange tube (23) is sealed; A second heat exchange tube (24) is fixedly arranged at the middle position of the top end of the first heat exchange tube (23); the bottom end of the second heat exchange tube (24) is connected to the water tank (20); a spiral rod is arranged at the corresponding position of the top end of the first heat exchange tube (23) and the second heat exchange tube (24); the bottom end of the spiral rod is flush with the second heat exchange tube (24); a return pipe is arranged between the second heat exchange tube (24) and the upper side wall of the jacket (25); a fan (22) is arranged at the top end of the water tank (20); the input end of the fan (22) is connected to the external environment; the output end of the fan (22) is connected to the bottom end of the first heat exchange tube (23); and an air outlet is arranged at the top end of the left side wall of the first heat exchange tube (23).

5. The medical transparent injection syringe injection mold according to claim 4, characterized in that: The demoulding device comprises a support frame (26), a demoulding material box (27), a material pump (28) and a nozzle (29); the support frame (26) is arranged above the water tank (20); the demoulding material box (27) is arranged at the top of the support frame (26); the material pump (28) is arranged at the top of the demoulding material box (27); the nozzle (29) is arranged at a position corresponding to the right side wall of the support plate (2) on the left side of the base (1) and the upper mold (6); the input end of the material pump (28) is connected to the demoulding material box (27); and the output end of the material pump (28) is connected to the nozzle (29).

6. The medical transparent injection syringe injection mold according to claim 5, characterized in that: The fixing column (9) is rotatably connected to the fixing plate (7), and protrusions are evenly distributed on the top of the side wall of the fixing column (9). The bottom end of the fixing plate (7) is located on the right side of the fixing column (9) and is rotatably provided with a driving gear (30). The driving gear (30) is meshed with the protrusions. A driving motor (31) is provided at a position corresponding to the driving gear (30) at the top of the fixing plate (7), and the output end of the driving motor (31) is connected to the driving gear (30). A first cavity is provided in the middle position of the fixing disk (10), and a second cavity is provided on the fixing disk (10) at the periphery of the first cavity. A cavity is connected to a second cavity, a first gear (32) is rotatably arranged in the first cavity, a positioning rod (33) is fixedly arranged at the top end of the first gear (32), the top end of the positioning rod (33) passes through a fixing column (9) and is fixedly connected to a fixing plate (7), the positioning rod (33) is rotatably connected to the fixing column (9), a second gear (34) is rotatably arranged in the second cavity, the first gear (32) is meshed with the second gear (34), the top end of the upper mold (6) is fixedly connected to the second gear (34), and the upper mold (6) is rotatably connected to a fixing plate (10).

7. The medical transparent injection syringe injection mold according to claim 6, characterized in that: The discharging device comprises a discharging plate (35), a discharging column (36) and a discharging hydraulic rod (37); the fixed seat (4) is slidably connected to the support plate (2); a discharging hydraulic rod (37) is arranged between the bottom end of the fixed seat (4) and the base (1); the discharging plate (35) is slidably arranged in the fixed groove (8); a fixing hole is arranged at the bottom of the fixed groove (8); a discharging column (36) is fixedly arranged at a position corresponding to the bottom end of the discharging plate (35) and the fixing hole; and the bottom end of the discharging column (36) passes through the fixing hole and is fixedly connected to the base (1).

8. The production process of the injection mold for a medical transparent injection syringe according to any one of claims 1 to 7, characterized in that: The following steps are involved: S1: Assembly of the upper mold (6): The operator rotates the limit plate (16), thereby driving the limit block (15) to move around the limit column (14) through the limit rod and the limit column (14), so that the limit block (15) moves to the rear side of the limit column (14), and then the operator extends the forming block (13) into the transverse groove through the cooperation of the first slide groove and the first slider (18), the second slide groove and the second slider (19), and then the operator releases the limit plate (16), thereby the torsion spring (17) The limiting plate (16) is driven to reset under the action of the limiting rod and the limiting column (14), thereby controlling the limiting block (15) to move into the second limiting groove, thereby completing the limiting of the forming block (13) through the cooperation between the second limiting groove and the limiting block (15), and at the same time, the lower mold (5) is assembled through the cooperation with the first slide groove and the first slider (18), the second slide groove and the second slider (19), and the lower mold (5) after assembly is placed in the fixing groove (8) on the surface of the fixing seat (4); S2: Spraying of release agent: The operator controls the driving motor (31) to work, thereby driving the fixed column (9) and the fixed plate (10) to rotate through the meshing of the driving gear (30) and the protrusion, thereby driving the upper mold (6) to move around the fixed column (9), and at the same time driving the upper mold (6) to rotate through the meshing of the second gear (34) and the first gear (32). At the same time, the operator controls the material pump (28) to work, thereby spraying the release agent evenly onto the surface of the upper mold (6) through the nozzle (29); S3: Injection molding: The operator adds molten raw materials into the molding groove, and then the operator controls the fixed hydraulic rod (11) to work, so that the fixed plate (10) and the fixed column (9) drive the fixed plate (10) to buckle on the surface of the fixed seat (4), and at the same time make the upper mold (6) extend into the molding groove; S4: Cooling and molding: The operator controls the water pump (21) to work, thereby pumping the cooling water (21) in the water tank (20) into the jacket (25) to exchange heat with the lower mold (5), thereby increasing the molding rate of the raw material in the molding tank of the lower mold (5). The cooling water after heat exchange enters the second heat exchange pipe (24) through the return pipe, and then returns to the water tank (20) through the second heat exchange pipe (24). In the process of the cooling water passing through the second heat exchange pipe (24), the operator controls the fan (22) to work, thereby controlling the air in the external environment to quickly pass through the first heat exchange pipe (23), thereby exchanging heat with the cooling water through the second heat exchange pipe (24), thereby reducing the temperature of the cooling water returning to the water tank (20); S5: Discharging: After the raw material is cooled and formed, the operator controls the fixed hydraulic rod (11) to work, thereby driving the fixed plate (10) and the upper mold (6) to reset, and at the same time the operator controls the discharging hydraulic rod (37) to work, thereby driving the fixed seat (4) to move downward, thereby pushing the lower mold (5) out of the fixed groove (8) through the discharging column (36) and the discharging plate (35); S6: Demolding: The operator rotates the limiting plate (16), thereby driving the limiting block (15) to move out of the second limiting groove through the limiting rod and the limiting column (14), and then the operator pulls the molding seat (12) and the molding block (13) in opposite directions, thereby facilitating the control of the molding block (13) to detach from the surface of the molding seat (12), thereby facilitating the demoulding of the cooled and molded syringe.

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