Anti-offset blow molding die closing mechanism

Abstract

This utility model relates to the field of blow molding machine molds, specifically a blow molding machine mold closing mechanism to prevent offset. It includes: a first mounting plate; connecting rods are fixedly installed at the four corners of the front side of the first mounting plate; a second mounting plate is slidably mounted on the connecting rods; mounting slots are formed on the opposite side of the second mounting plate and the first mounting plate; blow molding molds are locked inside each mounting slot by screws; forming grooves are formed on the opposite side of each blow molding mold mounted on the first and second mounting plates; the two sets of forming grooves can form a complete blow molding cavity. This utility model, through the guiding action of the connecting rods, ensures that the second mounting plate slides without offset. Combined with the precise positioning of the blow molding mold by the mounting slots, it effectively improves the mold closing accuracy, reduces the bottle forming defect rate, and the detachable design greatly saves on later equipment maintenance costs.

Description

Technical Field

[0001] This utility model relates to the field of blow molding machine molds, specifically a blow molding machine mold closing mechanism to prevent displacement. Background Technology

[0002] Blow molding machines use molds as the core component in plastic blow molding, primarily for processing PET, PE, and other plastic materials to produce containers such as beverage bottles, daily chemical bottles, and food packaging bottles. Their core function is to shape a heated and softened plastic preform into a bottle of a specific shape and size through processes such as mold clamping, blowing, and cooling. A mold typically consists of four parts: a cavity, a core, a cooling system, and an venting system. The cavity determines the external shape of the bottle, the core controls the internal structure, the cooling system rapidly cools and solidifies the bottle using circulating water, and the venting system removes gases generated during molding to prevent defects such as air bubbles and material shortages.

[0003] A search revealed Chinese Patent Publication No. CN210880845U, which discloses a linkage-type blow molding die closing mechanism. This mechanism includes a mold frame, an active mold platen and a driven mold platen that can slide and open / close within the mold frame, two half-molds respectively fixedly mounted on the active and driven mold plates, a drive mechanism for driving the active mold platen, and a linkage mechanism for connecting the active and driven mold plates for linkage opening and closing. This invention utilizes a gear and rack linkage mechanism to achieve synchronous, opposite movement of the two half-molds, shortening the mold opening and closing time and ensuring accurate mold closing position. Furthermore, it employs a double gear with unequal tooth counts in conjunction with a rack to achieve unequal speed and distance movement of the two half-molds, facilitating adjustment of the specific mold closing position according to actual conditions. The structure is compact, and due to the high efficiency and precise transmission of the gear and rack linkage, this invention achieves low energy consumption during mold opening and closing and precise mold closing position control.

[0004] Regarding the aforementioned technologies, the inventors have discovered the following drawbacks: long-term use of molds can easily lead to the accumulation of plastic residue and oil stains, or slight wear on parts, making disassembly difficult and requiring several times the normal time for cleaning and maintenance. Long-term use can also cause deformation of the molding groove and a decrease in surface smoothness. The fixed structure is difficult to replace, which greatly increases the equipment investment cost. Therefore, in order to address the above problems, an anti-displacement mold closing mechanism for blow molding machines is proposed. Utility Model Content

[0005] In order to overcome the shortcomings of the prior art and solve at least one of the technical problems mentioned in the background art, this utility model proposes a mold closing mechanism for blow molding machines that prevents deviation.

[0006] The technical solution adopted by this utility model to solve its technical problem is: a mold closing mechanism for a blow molding machine that prevents deviation, comprising: a first mounting plate, connecting rods fixedly provided at the four corners of the front side of the first mounting plate, a second mounting plate slidably provided on the connecting rods, an installation groove provided on the side opposite to the first mounting plate of the second mounting plate, a blow molding die being locked inside the installation groove by screws, and a forming groove provided on the side opposite to the blow molding die on the first mounting plate and the second mounting plate, the forming groove forming a complete blow molding cavity.

[0007] Preferably, a device base plate is fixedly installed at the front end of the connecting rod, an electric telescopic rod is fixedly installed at the middle of the rear side of the device base plate, a signal receiver is fixedly installed on one side of the electric telescopic rod, the signal receiver is electrically connected to the electric telescopic rod, and a connector is fixedly installed at the rear end of the electric telescopic rod, the connector being locked to the second mounting plate by screws.

[0008] Preferably, the two sets of blow molding molds have a fixing groove on one side of each other. The fixing groove is located at the bottom of the molding groove. Each fixing groove has an auxiliary docking block locked inside by screws. The two sets of auxiliary docking blocks have a docking groove on one side of each other. The docking groove can form a complete hole and communicate with the molding groove. The bottom opening of the auxiliary docking block has a guide ramp that is inclined towards the docking groove.

[0009] Preferably, the top of the blow molding die is provided with auxiliary disassembly grooves on both the side near the first mounting plate and the side near the second mounting plate, and a cover plate is provided on the rear side of the first mounting plate to cover the screw interface.

[0010] Preferably, a fixing slot is provided on the front side of the first mounting plate, and a pressure sensor is fixed inside the fixing slot. The pressure sensor is electrically connected to a signal receiver.

[0011] Preferably, a protective plate is fixedly installed on the rear side of the device base plate. The protective plate is used to protect the electric telescopic rod between the second mounting plate and the device base plate. A transparent observation plate is fixedly installed in the middle of the protective plate.

[0012] The advantages of this utility model are:

[0013] This invention, through the guiding action of the connecting rod, ensures that the second mounting plate slides without deviation. Combined with the precise positioning of the blow molding die in the mounting slot, it effectively improves mold closing accuracy, reduces the defect rate in bottle molding, and the detachable design significantly saves on subsequent equipment maintenance costs.

[0014] The guide ramp can correct minor offsets in the early stage of mold closing, and the rigid connection of the auxiliary docking block further improves the accuracy of mold closing. At the same time, the detachable design makes it easy to clean the residual impurities in the docking groove, ensuring smooth feeding of the preform. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the electric telescopic pole structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the mounting plate structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the mounting plate slot structure of this utility model;

[0020] Figure 5 This is a schematic diagram of the auxiliary docking block structure of this utility model.

[0021] In the diagram: 1. First mounting plate; 11. Connecting rod; 12. Second mounting plate; 13. Mounting slot; 14. Blow molding die; 15. Molding groove; 2. Device bottom pole; 21. Electric telescopic rod; 22. Signal receiver; 23. Connector; 3. Fixing slot; 31. Auxiliary docking block; 32. Docking slot; 33. Guide ramp; 4. Fixing slot; 5. Pressure sensor; 6. Auxiliary disassembly slot; 7. Cover plate; 8. Protective plate; 9. Transparent observation plate. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0023] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0024] This application discloses a mold closing mechanism for a blow molding machine that prevents misalignment. (See also...) Figure 1 and Figure 3The anti-deviation blow molding die closing mechanism includes: a first mounting plate 1, with connecting rods 11 fixedly installed at the four corners of the front side of the first mounting plate 1, and a second mounting plate 12 slidably installed on the connecting rods 11. The second mounting plate 12 has mounting slots 13 on the opposite side of the first mounting plate 1, and blow molding dies 14 are locked inside the mounting slots 13 by screws. The blow molding dies 14 on the first mounting plate 1 and the second mounting plate 12 have forming grooves 15 on the opposite side of the first mounting plate 1 and the forming grooves 15 can form a complete blow molding cavity. The second mounting plate 12 slides along the connecting rods 11 towards the first mounting plate 1 until the two sets of forming grooves 15 are completely fitted to form a closed cavity. When opening the mold, the second mounting plate 12 slides in the opposite direction to the first mounting plate 1.

[0025] Reference Figure 1 and Figure 2 A device base plate 2 is fixedly installed at the front end of the connecting rod 11. An electric telescopic rod 21 is fixedly installed at the middle of the rear side of the device base plate 2. A signal receiver 22 is fixedly installed on one side of the electric telescopic rod 21. The signal receiver 22 is electrically connected to the electric telescopic rod 21. A connector 23 is fixedly installed at the rear end of the electric telescopic rod 21. The connector 23 is locked to the second mounting plate 12 by screws. The external control system sends a command to the signal receiver 22, which drives the electric telescopic rod 21 to extend and retract, thereby causing the second mounting plate 12 to slide along the connecting rod 11 to complete the mold closing and opening.

[0026] Reference Figure 4 and Figure 5 Two sets of blow molding molds 14 have fixed grooves 3 on opposite sides. The fixed grooves 3 are located at the bottom of the molding groove 15. Each fixed groove 3 has an auxiliary docking block 31 locked inside by screws. The two sets of auxiliary docking blocks 31 have docking grooves 32 on opposite sides. The docking grooves 32 can form a complete hole and are connected to the molding groove 15. The bottom opening of the auxiliary docking block 31 has a guide ramp 33 that is inclined towards the docking groove 32. During the mold closing process, the guide ramp 33 will guide the two sets of auxiliary docking blocks 31 to be precisely aligned, so that the docking grooves 32 are combined to form a complete hole for the preform to enter the molding groove 15. When disassembling, the auxiliary docking block 31 can be removed for cleaning or replacement by unscrewing the screws.

[0027] Reference Figure 1 and Figure 3 The top of the blow molding die 14 is provided with an auxiliary disassembly groove 6 on the side near the first mounting plate 1 and the second mounting plate 12. A cover plate 7 is provided on the rear side of the first mounting plate 1 to cover the screw interface. When it is necessary to disassemble the blow molding die 14, first loosen the fixing screws, then insert the pry bar into the auxiliary disassembly groove 6, and gently apply force to remove the die from the mounting groove 13. The cover plate 7 is installed by a buckle. When disassembling, simply pull the buckle to remove it, exposing the screw interface for operation. When installing, simply snap it back into place.

[0028] Reference Figure 3 and Figure 4 The first mounting plate 1 has a fixing slot 4 on the front side, and a pressure sensor 5 is fixed inside the fixing slot 4. The pressure sensor 5 is electrically connected to the signal receiver 22. During the mold closing process, the pressure sensor 5 detects the mold closing pressure in real time and transmits the data to the signal receiver 22.

[0029] Reference Figure 1 and Figure 2 A protective plate 8 is fixedly installed on the rear side of the device base plate 2. The protective plate 8 is used to protect the electric telescopic rod 21 between the second mounting plate 12 and the device base plate 2. A transparent observation plate 9 is fixedly installed in the middle of the protective plate 8. The operating status of the electric telescopic rod 21 and the connection status of the connector 23 can be directly observed through the transparent observation plate 9 without disassembling the protective plate 8.

[0030] Working principle: The external control system sends a command to the signal receiver 22, which drives the electric telescopic rod 21 to extend and retract, thereby causing the second mounting plate 12 to slide along the connecting rod 11 towards the first mounting plate 1 until the two sets of molding grooves 15 are completely fitted to form a closed cavity. When opening the mold, the sliding can be reversed. The blow molding mold 14 is equipped with an auxiliary docking block 31. The bottom opening of the auxiliary docking block 31 is provided with a guide ramp 33 that is inclined towards the docking groove 32. During the mold closing process, the guide ramp 33 will guide the two sets of auxiliary docking blocks 31 to be precisely aligned, so that the docking grooves 32 are combined to form a complete hole position for the bottle preform to enter the molding groove 15. When disassembling, the auxiliary docking block 31 can be removed for cleaning or replacement by unscrewing the screws.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A biasing prevention mold closing mechanism for a bottle blowing machine mold, comprising: The first mounting plate (1) is characterized in that: a connecting rod (11) is fixedly provided at the four corners of the front side of the first mounting plate (1), and a second mounting plate (12) is slidably provided on the connecting rod (11). The second mounting plate (12) is provided with a mounting groove (13) on the side opposite to the first mounting plate (1). A blow molding mold (14) is locked inside the mounting groove (13) by screws. A forming groove (15) is provided on the side opposite to the blow molding mold (14) on the first mounting plate (1) and the second mounting plate (12). The forming groove (15) can form a complete blow molding cavity.

2. The anti-eccentric blow mold mold closing mechanism of a bottle blowing machine according to claim 1, characterized in that: A device base plate (2) is fixedly installed at the front end of the connecting rod (11). An electric telescopic rod (21) is fixedly installed at the middle of the rear side of the device base plate (2). A signal receiver (22) is fixedly installed on one side of the electric telescopic rod (21). The signal receiver (22) is electrically connected to the electric telescopic rod (21). A connector (23) is fixedly installed at the rear end of the electric telescopic rod (21). The connector (23) is locked to the second mounting plate (12) by screws.

3. The anti-eccentric blow mold mold closing mechanism of a bottle blowing machine according to claim 1, characterized in that: The blow molding die (14) has a fixing groove (3) on one side. The fixing groove (3) is located at the bottom of the molding groove (15). The fixing groove (3) is secured with an auxiliary docking block (31) by screws. The auxiliary docking block (31) has a docking groove (32) on one side. The docking groove (32) can form a complete hole and communicate with the molding groove (15). The bottom opening of the auxiliary docking block (31) has a guide ramp (33) that is inclined towards the docking groove (32).

4. The anti-eccentric blow mold mold closing mechanism of claim 1 wherein: The top of the blow molding die (14) is provided with an auxiliary disassembly groove (6) on the side near the first mounting plate (1) and the second mounting plate (12). A cover plate (7) is provided on the rear side of the first mounting plate (1) to cover the screw interface.

5. The anti-eccentric blow mold mold closure mechanism of claim 1 wherein: The first mounting plate (1) has a fixing slot (4) on the front side, and a pressure sensor (5) is inserted inside the fixing slot (4). The pressure sensor (5) is electrically connected to the signal receiver (22).

6. The anti-eccentric blow mold mold closing mechanism of claim 2 wherein: A protective plate (8) is fixedly installed on the rear side of the device base plate (2). The protective plate (8) is used to protect the electric telescopic rod (21) between the second mounting plate (12) and the device base plate (2). A transparent observation plate (9) is fixedly installed in the middle of the protective plate (8).

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