Bottom die locking structure of bottle blowing die

Abstract

The utility model discloses a bottom die locking structure of a bottle blowing die, which relates to the technical field of bottle blowing dies and comprises a bottom die, an inner bayonet seat, a bottom die water conveying disc, a connecting seat and a bottom die seat which are detachably connected in sequence, and a locking shaft and a machine clamping seat fixed on a bottle blowing machine are additionally arranged on the basis of the bottom die, the inner bayonet seat, the bottom die water conveying disc, the connecting seat and the bottom die seat. The locking shaft penetrates through the bottom die base and is provided with a horizontal through groove, and the machine clamping base is provided with a horizontal clamping pin. The bottom die is pushed laterally, so that the horizontal through groove of the locking shaft is in transverse clamping fit with the clamping pin, and rapid locking of the die is achieved. And clamping can be relieved by reverse side pushing, and disassembly is completed. A traditional multi-bolt fixing mode is abandoned, the disassembly and assembly time is remarkably shortened, meanwhile, the mold locking stability is ensured through rigid matching of transverse clamping, and the mold locking mechanism is suitable for high-frequency production scenes.

Description

Technical Field

[0001] This utility model relates to the field of blow molding technology, and more specifically, to a bottom mold locking structure for blow molding. Background Technology

[0002] In the field of blow molding, the rapid assembly and disassembly, as well as the stable fixation of the bottom mold, are key factors affecting production efficiency. Traditionally, the bottom mold is typically connected to the blow molding machine using multiple bolts or complex snap-fit ​​structures. These methods have significant drawbacks: bolt fastening requires individual disassembly, which is time-consuming and labor-intensive; and complex snap-fit ​​structures are prone to wear due to frequent operation, reducing positioning accuracy and even causing mold misalignment. Furthermore, existing technologies often require precise calibration for mold-machine docking, resulting in low operational error tolerance and increased maintenance costs. The industry urgently needs a solution that simplifies the assembly and disassembly process while ensuring mold-locking stability. Utility Model Content

[0003] The present invention provides a bottom mold locking structure for blow molding, which can alleviate the above-mentioned problems.

[0004] To alleviate the above problems, the technical solution adopted by this utility model is as follows:

[0005] A bottom mold locking structure for blow molding includes a bottom mold, an inner bayonet seat, a bottom mold water tray, a connecting seat, a bottom mold base, a locking shaft, and a machine clamping seat, which are detachably connected in sequence. The locking shaft is detachably fixed to the connecting seat and extends downward through the bottom mold base, with a horizontal through groove at its lower end. The machine clamping seat is fixed to a blow molding machine and is provided with a horizontal locking pin. By pushing the bottom mold laterally, the horizontal through groove and the locking pin form a lateral locking engagement.

[0006] Preferably, the bottom of the horizontal through groove is an arc structure, and the extension sections on both sides of the groove opening are straight edge structures perpendicular to the tangent of the arc.

[0007] Preferably, the machine holder is fixed to the blow molding machine by welding or threaded connection.

[0008] Preferably, the top end of the locking shaft is integrally formed with a circular plate with a diameter larger than that of the shaft body. The circular plate is pressed against the upper surface of the connecting seat, and the locking shaft is detachably fixedly connected to the bottom mold seat by bolts passing through the circular plate.

[0009] Compared with the prior art, the beneficial effects of this utility model are:

[0010] The locking shaft and machine holder can be laterally engaged by a simple side-push motion of the bottom mold, eliminating the need for traditional bolt disassembly and assembly, greatly improving efficiency. The locking shaft passes through the bottom mold base and forms a rigid lateral engagement with the locking pin, preventing displacement of the mold due to vibration or pressure during blow molding and ensuring molding accuracy. The horizontal through-slot and locking pin do not require precise alignment, reducing operational difficulty and the risk of human error. The design eliminates easily damaged and complex snap-fit ​​components, adopting an integrated locking shaft and standardized locking pin design, reducing component replacement frequency and maintenance costs. The modular design allows the locking shaft and machine holder to be adapted to different models of blow molding machines, expanding application scenarios.

[0011] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, embodiments of this utility model are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0012] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0014] Figure 2 This is a cross-sectional structural schematic diagram of the present invention;

[0015] Figure 3 This is a schematic diagram of the machine card holder in this utility model;

[0016] Figure 4 This is a schematic diagram of the locking shaft in this utility model;

[0017] In the diagram: 1-Machine mounting bracket, 2-Clamping pin, 3-Locking shaft, 4-Bottom mold base, 5-Connecting base, 6-Bottom mold water tray, 7-Inner bayonet base, 8-Bottom mold, 9-Horizontal through groove. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0019] Please refer to Figure 1 and Figure 2This utility model discloses a locking structure for the bottom mold 8 of a blow molding die, including a bottom mold 8, an inner bayonet seat 7, a bottom mold water transport tray 6, a connecting seat 5, a bottom mold seat 4, a locking shaft 3, and a machine clamping seat 1 that are detachably connected in sequence. The locking shaft 3 is detachably fixed to the connecting seat 5 and extends downward through the bottom mold seat 4, with a horizontal through groove 9 at its lower end. The machine clamping seat 1 is fixed to the blow molding machine and is provided with a horizontal locking pin 2. By pushing the bottom mold 8 laterally, the horizontal through groove 9 and the locking pin 2 form a transverse locking engagement.

[0020] This structure uses a locking shaft 3 that passes through the bottom mold base 4 and forms a lateral engagement with the locking pin 2 of the machine clamping seat 1. The lateral push of the bottom mold 8 creates a linear motion, causing the horizontal through groove 9 to rigidly engage with the locking pin 2, achieving mechanical interlocking. The linear motion path of the lateral engagement simplifies the operation process, eliminating the need for rotation or precise alignment, significantly improving assembly and disassembly speed. The structure of the locking shaft 3 passing through the bottom mold base 4 converts the mold's gravity into positive pressure on the engagement surface, enhancing vibration resistance. The modular design separates the mold from the fixed interface of the blow molding machine, reducing the difficulty of equipment modification.

[0021] In an optional embodiment of this utility model, the bottom of the horizontal through groove 9 is an arc structure, and the extended sections on both sides of the groove opening are straight edges perpendicular to the tangent of the arc. The arc bottom of the horizontal through groove 9 forms a surface contact with the cylindrical surface of the locking pin 2; the arc bottom increases the contact area, reduces the pressure per unit area, and prevents the surface of the locking pin 2 from being crushed; the arc-to-straight-edge transition design guides the locking pin 2 to slide smoothly into the through groove, reducing operating resistance. Figure 3 and Figure 4 As shown.

[0022] In an optional embodiment of this utility model, the machine holder 1 is fixed to the blow molding machine by welding or threaded connection.

[0023] In one optional embodiment of this utility model, such as Figure 2 and Figure 4 As shown, the top end of the locking shaft 3 has an integrally formed circular plate with a diameter larger than that of the shaft body. The circular plate is pressed against the upper surface of the connecting seat 5, and the locking shaft 3 is detachably fixedly connected to the bottom mold seat 4 by bolts passing through the circular plate. The circular plate at the top end of the locking shaft 3 is pressed between the connecting seat 5 and the bottom mold seat 4 by bolts, thereby increasing the force-bearing area by the circular plate and providing axial fixation by the bolt preload.

[0024] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A bottom mold locking structure for blow molding, comprising a bottom mold (8), an inner bayonet seat (7), a bottom mold water transport tray (6), a connecting seat (5), and a bottom mold base (4) that are sequentially and detachably connected, characterized in that: It also includes a locking shaft (3) and a machine holder (1). The locking shaft (3) is detachably fixed to the connecting seat (5) and extends downward through the bottom mold seat (4). A horizontal through groove (9) is opened at its lower end. The machine holder (1) is fixed to the blow molding machine and is provided with a horizontal locking pin (2). By pushing the bottom mold (8) laterally, the horizontal through groove (9) and the locking pin (2) form a transverse locking fit.

2. The bottom mold locking structure of the blow molding die according to claim 1, characterized in that: The bottom of the horizontal through groove (9) is an arc structure, and the extension sections on both sides of the groove opening are straight edge structures perpendicular to the tangent of the arc.

3. The bottom mold locking structure of the blow molding die according to claim 1, characterized in that: The machine holder (1) is fixed to the blow molding machine by welding or threaded connection.

4. The bottom mold locking structure of the blow molding die according to claim 1, characterized in that: The top end of the locking shaft (3) is integrally formed with a circular plate with a diameter larger than the shaft body. The circular plate is pressed against the upper surface of the connecting seat (5), and the locking shaft (3) is detachably fixedly connected to the bottom mold seat (4) by bolts that pass through the circular plate.

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