Ejection device of blow molding machine

Abstract

The utility model relates to the technical field of blow molding machines, and discloses an ejection device of a blow molding machine, which comprises a main body assembly, a movable mold fixing plate, a fixed column and a movable mold, the fixed column is fixed on one side of the movable mold fixing plate, and the movable mold is fixed with the other side of the fixed column; and the ejection assembly is arranged on one side of the movable mold fixing plate, comprises a pushing piece, is positioned on one side of the movable mold fixing plate, and comprises an oil cylinder, an ejection rod and a pushing plate. The ejection mechanism has the beneficial effects that the ejection mechanism is arranged on the movable mold fixing plate, the production cost is reduced, the ejection rod can be independently disassembled by arranging the ejection rod in a clamping block fixing mode, when the ejection rod and an ejection channel need to be cleaned or the ejection mechanism breaks down, the whole movable mold does not need to be disassembled, and only the ejection rod needs to be disassembled for cleaning or maintenance, so that the production efficiency is greatly improved. The ejection device is convenient for operators to maintain and repair, long-term stable operation of the ejection device is ensured, and meanwhile, the product quality is also improved.

Description

Technical Field

[0001] The utility model relates to the technical field of blow molding machines, in particular to an ejection device for a blow molding machine. Background Art

[0002] With the wide application of plastic products in various fields, blow molding technology has developed rapidly. As an important device for producing plastic products, the performance and efficiency of a blow molding machine directly affect the quality and production cost of products. After the blow molding process is completed, the plastic product may be tightly attached to the cavity of the mold. At this time, an ejection device is required to push the plastic product out of the mold to ensure that the product can be smoothly demolded and avoid product damage or deformation caused by difficult demolding. Setting the ejection device on the mold itself will greatly increase the manufacturing cost of the mold. At the same time, when a fault occurs in the ejection mechanism, it is often necessary to remove the entire mold for repair, which is not only cumbersome to operate but also seriously affects production efficiency. In addition, after long-term use, dirt and residues may accumulate at the contact part of the ejector rod and the ejection channel. If not cleaned in time, it will affect the ejection effect and product quality. Summary of the Utility Model

[0003] The purpose of this part is to outline some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Simplifications or omissions may be made in this part, as well as in the abstract and title of the application, to avoid obscuring the purpose of this part, the abstract, and the title. However, such simplifications or omissions shall not be used to limit the scope of the utility model.

[0004] In view of the above and / or existing problems in the ejection device of a blow molding machine, the present utility model is proposed.

[0005] Therefore, the problem to be solved by the present utility model is that setting an ejection mechanism on the mold has a high cost and is inconvenient for cleaning and maintenance.

[0006] To solve the above technical problems, the present utility model provides the following technical solution: An ejection device for a blow molding machine, which includes a main body assembly, including a moving mold fixing plate, a fixed column, and a moving mold. The fixed column is fixed on one side of the moving mold fixing plate, and the moving mold is fixed on the other side of the fixed column;

[0007] An ejection assembly is arranged on one side of the moving mold fixing plate and includes a pushing member located on one side of the moving mold fixing plate, including an oil cylinder, an ejector rod, and a push plate. The oil cylinder is fixed on the moving mold fixing plate, the ejector rod is movably connected to the oil cylinder, a through groove is formed in the moving mold fixing plate, the ejector rod is inserted into the through groove, and the push plate is fixed at one end of the ejector rod;

[0008] The ejecting assembly further includes an ejecting member located on one side of the ejecting plate, which includes a pressing plate, a top plate, a locking block and a first spring. The pressing plate is arranged on one side of the ejecting plate. The moving die is provided with a guiding groove, and the top plate slides in the guiding groove. A clamping groove is formed in the pressing plate, and the other end of the top plate is clamped with the clamping groove. The pressing plate is provided with a first moving groove, and the locking block slides in the first moving groove. One end of the first spring is fixed to the locking block, and the other end is fixed to the inner wall of the first moving groove. A locking groove is formed in the top plate, and the locking block can be clamped with the locking groove.

[0009] As a preferred scheme of the ejecting device of the blow molding machine of the present utility model, wherein: a connecting plate is fixed on one side of the locking block, and the connecting plate slides in the first moving groove.

[0010] As a preferred scheme of the ejecting device of the blow molding machine of the present utility model, wherein: a moving plate is fixed on one side of the connecting plate, and the pressing plate is provided with a second moving groove, and the moving plate slides in the second moving groove.

[0011] As a preferred scheme of the ejecting device of the blow molding machine of the present utility model, wherein: a second spring is sleeved outside the top plate, and one end of the second spring is fixed to the pressing plate.

[0012] As a preferred scheme of the ejecting device of the blow molding machine of the present utility model, wherein: there are two ejector rods and the second springs, and the number of the guiding grooves is the same as that of the ejector rods and corresponds to them.

[0013] As a preferred scheme of the ejecting device of the blow molding machine of the present utility model, wherein: there are four locking blocks and the first springs, which are divided into two groups and respectively correspond to one top plate.

[0014] As a preferred scheme of the ejecting device of the blow molding machine of the present utility model, wherein: the first moving groove is communicated with the second moving groove, and the moving plate extends outside the pressing plate.

[0015] As a preferred scheme of the ejecting device of the blow molding machine of the present utility model, wherein: there are four fixing columns, which are respectively close to the four vertices of the moving die fixing plate.

[0016] As a preferred scheme of the ejecting device of the blow molding machine of the present utility model, wherein: the main body assembly further includes a fixed die fixing plate and a fixed die. The fixed die fixing plate is arranged on one side of the moving die fixing plate, and the fixed die is fixed on the fixed die fixing plate.

[0017] As a preferred embodiment of the ejecting device of the blow molding machine of the present utility model, wherein: the main body assembly further includes a base and a mold clamping mechanism, the base is located at the bottom of the moving mold fixing plate, and the mold clamping mechanism is fixed on the base.

[0018] The beneficial effects of the present utility model are as follows: the ejecting mechanism is installed on the moving mold fixing plate, reducing production costs. By setting the ejector rod in a clamping block fixing manner, the ejector rod can be disassembled separately. When it is necessary to clean the ejector rod and the ejection channel or when the ejecting mechanism fails, it is not necessary to remove the entire moving mold. It is only necessary to remove the ejector rod for cleaning or repair, which is convenient for the operator to maintain and service the ejecting device, ensuring the long-term stable operation of the ejecting device and improving the product quality at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings. Among them:

[0020] Figure 1 It is the overall structure diagram of the ejecting device of the blow molding machine.

[0021] Figure 2 It is the sectional structure diagram of the moving mold of the ejecting device of the blow molding machine.

[0022] Figure 3 It is of the ejecting device of the blow molding machine Figure 3 The partial enlarged structure diagram at position A.

[0023] Figure 4 It is the sectional structure diagram of the top plate of the ejecting device of the blow molding machine.

[0024] Figure 5 It is the sectional structure diagram of the locking block of the ejecting device of the blow molding machine.

[0025] Figure 6 It is the sectional structure diagram of the extrusion plate of the ejecting device of the blow molding machine. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] In order to make the above-mentioned objects, features, and advantages of the present utility model more obvious and understandable, the following will give a detailed description of the specific embodiments of the present utility model with reference to the accompanying drawings of the specification.

[0027] In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. However, the present utility model may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed below.

[0028] Secondly, the so-called "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation manner of the present utility model. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that mutually excludes other embodiments.

[0029] Embodiment 1

[0030] Referring to Figures 1-6 , this is the first embodiment of the present utility model. This embodiment provides an ejection device for a blow molding machine. The ejection device for the blow molding machine includes a main body assembly 100, which includes a moving die fixing plate 101, a fixing column 102, and a moving die 103. The fixing column 102 is fixed to one side of the moving die fixing plate 101, and the moving die 103 is fixed to the other side of the fixing column 102.

[0031] The fixing column 102 is used to connect the moving die 103 and the moving die fixing plate 101.

[0032] An ejection assembly 200 is provided on one side of the moving die fixing plate 101. It includes a pushing member 201, which is located on one side of the moving die fixing plate 101 and includes an oil cylinder 201a, a push rod 201b, and a push plate 201c. The oil cylinder 201a is fixed to the moving die fixing plate 101. The push rod 201b is movably connected to the oil cylinder 201a. A through groove 101-1 is formed in the moving die fixing plate 101, and the push rod 201b is inserted into the through groove 101-1. The push plate 201c is fixed to one end of the push rod 201b.

[0033] The setting of the pushing member 201 is used to provide power. The oil cylinder 201a is the power source for the entire ejection process. This is prior art and will not be elaborated in detail in this solution. Those skilled in the art can clearly understand the working principle. The number of oil cylinders 201a is two, and they are fixed to the moving die fixing plate 101 by bolts. The oil cylinder 201a drives the push rod 201b to move horizontally, thereby pushing the push plate 201c to approach or move away from the moving die 103.

[0034] The ejection assembly 200 further includes an ejector 202, which is located on one side of the push plate 201c and includes an extrusion plate 202a, a top plate 202b, a locking block 202c, and a first spring 202d. The extrusion plate 202a is arranged on one side of the push plate 201c. The moving die 103 is provided with a guiding groove 103-1. The top plate 202b slides in the guiding groove 103-1. A clamping groove 202a-1 is formed in the extrusion plate 202a. The other end of the top plate 202b is clamped with the clamping groove 202a-1. The extrusion plate 202a is provided with a first moving groove 202a-2. The locking block 202c slides in the first moving groove 202a-2. One end of the first spring 202d is fixed to the locking block 202c, and the other end is fixed to the inner wall of the first moving groove 202a-2. A locking groove 202b-1 is formed in the top plate 202b, and the locking block 202c can be clamped with the locking groove 202b-1.

[0035] The ejector 202 is used to push the plastic product out of the mold, ensuring that the product can be smoothly demolded and avoiding product damage or deformation caused by difficult demolding. Through the cooperation of the locking block 202c and the locking groove 202b-1, the top plate 202b and the extrusion plate 202a are fixed, preventing the position of the top plate 202b from shifting when the extrusion plate 202a drives the top plate 202b to move, thus affecting the demolding of the product. And the first spring 202d applies a continuous thrust to the locking block 202c to ensure that the locking block 202c is clamped with the locking groove 202b-1.

[0036] After installation, the push plate 201c is attached to the extrusion plate 202a, and the end face of the top plate 202b is flush with the end face of the guiding groove 103-1. The end face of the top plate 202b is completely attached to the inner surface of the cavity of the moving die 103, so as to prevent the top plate 202b from hindering the normal blow molding process.

[0037] When the oil cylinder 201a drives the ejector rod 201b and the push plate 201c to move towards the moving die 103, the push plate 201c will squeeze the extrusion plate 202a and drive the extrusion plate 202a to move, and then drive the top plate 202b to move along the guiding groove 103-1 towards the blow molded product in the moving die 103, pushing the product out of the moving die 103, so as to ensure that the product can be smoothly demolded and avoid product damage or deformation caused by difficult demolding.

[0038] Embodiment 2

[0039] Referring to Figures 1-6 , this is the second embodiment of the present utility model, and this embodiment is based on the previous embodiment.

[0040] Specifically, a connecting plate 202e is fixed to one side of the locking block 202c, and the connecting plate 202e slides in the first moving groove 202a-2.

[0041] The number of the connecting plates 202e and the locking blocks 202c is the same and they correspond to each other.

[0042] Specifically, a moving plate 202f is fixed to one side of the connecting plate 202e, and a second moving groove 202a-3 is formed in the pressing plate 202a, and the moving plate 202f slides in the second moving groove 202a-3.

[0043] The setting of the moving plate 202f is used to unlock the engagement state between the locking block 202c and the locking groove 202b-1, so that the top plate 202b is separated from the pressing plate 202a. Without disassembling the moving mold 103, the top plate 202b and the guide groove 103-1 can be cleaned or repaired, ensuring the long-term stable operation of the ejection assembly 200 and improving the product production quality at the same time.

[0044] When it is necessary to unlock the locking block 202c and the locking groove 202b-1, push the moving plate 202f to slide along the second moving groove 202a-3. The moving plate 202f drives the connecting plate 202e to move, and then drives the locking block 202c to move along the first moving groove 202a-2 away from the locking groove 202b-1. When the two are completely separated, the top plate 202b can be separated from the pressing plate 202a.

[0045] Specifically, a second spring 202g is sleeved outside the top plate 202b, and one end of the second spring 202g is fixed to the pressing plate 202a.

[0046] Through the setting of the second spring 202g, it is used to reset the ejector 202. When the oil cylinder 201a drives the ejector rod 201b and the push plate 201c to approach the moving mold 103, the second spring 202g will be in a compressed state. When the mold ejection is completed, the oil cylinder 201a drives the ejector rod 201b and the push plate 201c to move away from the moving mold 103. At this time, the second spring 202g will elongate, thereby driving the pressing plate 202a and the top plate 202b back to the initial position, ensuring that the subsequent blow molding can proceed normally and preparing for the next ejection at the same time.

[0047] Specifically, the number of the ejector rods 201b and the second springs 202g is two, and the number of the guide grooves 103-1 is the same as that of the ejector rods 201b and corresponds to them.

[0048] The two guide grooves 103-1 are symmetrically arranged in the moving mold 103, so that the ejection force is more evenly distributed on the ejected product, avoiding skewing, deformation or damage of the product due to unbalanced ejection force.

[0049] Specifically, the number of the locking blocks 202c and the first springs 202d is four, which are divided into two groups, respectively corresponding to one top plate 202b.

[0050] On both sides of the ejector rod 201b, a set of locking blocks 202c and a first spring 202d are symmetrically arranged. The two symmetrical locking blocks 202c can exert balanced pressure on the top plate 202b and the extrusion plate 202a from both sides, ensuring that they do not undergo relative displacement during operation and reducing the risk of loosening or falling off caused by uneven unilateral force.

[0051] Embodiment 3

[0052] Refer to Figures 1-6 , which is the third embodiment of the present utility model. This embodiment is based on the first two embodiments.

[0053] Specifically, the first moving groove 202a-2 communicates with the second moving groove 202a-3, and the moving plate 202f extends outside the extrusion plate 202a.

[0054] When it is necessary to disassemble the top plate 202b, first start the oil cylinder 201a to move the end face of the top plate 202b outside the guide groove 103-1, and then move the two extrusion plates 202a towards both sides of the top plate 202b at the same time, driving the locking blocks 202c on both sides to move away from the locking groove 202b-1 at the same time. At this time, the end face of the top plate 202b located in the cavity of the moving mold 103 can be pulled, thereby separating the extrusion plate 202a from the top plate 202b, facilitating maintenance and cleaning.

[0055] Specifically, the number of fixed columns 102 is four, which are respectively close to the four vertices of the moving mold fixing plate 101.

[0056] Setting the fixed columns 102 at positions close to the four vertices of the moving mold fixing plate 101 can make the forces received by the moving mold 103 in all directions more uniform, ensuring a firm and stable connection between the moving mold 103 and the moving mold fixing plate 101, and preventing shaking or displacement.

[0057] Specifically, the main body assembly 100 further includes a stationary mold fixing plate 104 and a stationary mold 105. The stationary mold fixing plate 104 is arranged on one side of the moving mold fixing plate 101, and the stationary mold 105 is fixed on the stationary mold fixing plate 104.

[0058] The moving mold 103 and the stationary mold 105 together form a molding space for plastic products. During the blow molding process, the moving mold 103 closes with the stationary mold 105 through movement to form a closed cavity, and the plastic preform is blown and formed in the cavity. This is the prior art and will not be elaborated in this solution. Those skilled in the art can clearly understand this working principle.

[0059] Specifically, the main body assembly 100 further includes a base 106 and a mold closing mechanism 107. The base 106 is located at the bottom of the moving mold fixing plate 101, and the mold closing mechanism 107 is fixed on the base 106.

[0060] The base 106 provides a solid support foundation for the entire blow molding machine equipment. During the blow molding process, the mold clamping mechanism 107 closes the moving mold 103 and the fixed mold 105 tightly to form a closed cavity, providing space for the blow molding of the plastic preform. After the blow molding is completed, the mold clamping mechanism 107 opens the mold to take out the molded plastic product. This is the prior art and will not be elaborated in this solution. And those skilled in the art can clearly understand this working principle.

[0061] During use, when the blow molding is completed and the mold is opened, the oil cylinder 201a is started. The oil cylinder 201a drives the ejector rod 201b to move horizontally, pushing the push plate 201c to move towards the moving mold 103. The push plate 201c will squeeze the extrusion plate 202a and drive the extrusion plate 202a to move. At this time, the second spring 202g will be in a compressed state. At the same time, the extrusion plate 202a drives the top plate 202b to move along the guide groove 103-1 towards the blow molded product in the moving mold 103, pushing the product out of the moving mold 103, so as to ensure that the product can be smoothly demolded and avoid product damage or deformation caused by difficult demolding. After the product falls off, the oil cylinder 201a is started again to drive the ejector rod 201b and the push plate 201c to reset. At this time, the second spring 202g will elongate, driving the extrusion plate 202a and the top plate 202b back to the initial position, ensuring the normal progress of subsequent blow molding and preparing for the next ejection.

[0062] When it is necessary to clean the end face of the top plate 202b and the guide groove 103-1 or a failure occurs during the ejection process, first start the oil cylinder 201a to move the end face of the top plate 202b out of the guide groove 103-1, and then move the two extrusion plates 202a towards both sides of the top plate 202b at the same time, driving the locking blocks 202c on both sides to move away from the locking groove 202b-1 at the same time, so as to unlock the locking state of the extrusion plate 202a and the top plate 202b. At this time, the end face of the top plate 202b located in the cavity of the moving mold 103 can be pulled to separate the extrusion plate 202a and the top plate 202b, which is convenient for maintenance and cleaning. At the same time, the extrusion plate 202a is squeezed between the push plate 201c and the moving mold 103, with relatively large friction, so that the extrusion plate 202a will not fall from between the two.

[0063] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not restrictive. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. An ejection device for a blow molding machine, characterized in that: including, a main body component (100), including a moving die fixing plate (101), fixing columns (102) and a moving die (103), wherein the fixing columns (102) are fixed on one side of the moving die fixing plate (101), and the moving die (103) is fixed to the other side of the fixing columns (102); an ejecting component (200), arranged on one side of the moving die fixing plate (101), including a pushing member (201), located on one side of the moving die fixing plate (101), including an oil cylinder (201a), a ejecting rod (201b) and a pushing plate (201c), wherein the oil cylinder (201a) is fixed on the moving die fixing plate (101), the ejecting rod (201b) is movably connected with the oil cylinder (201a), a through groove (101-1) is formed in the moving die fixing plate (101), the ejecting rod (201b) is inserted into the through groove (101-1), and the pushing plate (201c) is fixed to one end of the ejecting rod (201b); the ejecting component (200) further includes an ejecting member (202), located on one side of the pushing plate (201c), including a pressing plate (202a), a top plate (202b), a locking block (202c) and a first spring (202d), wherein the pressing plate (202a) is arranged on one side of the pushing plate (201c), a guiding groove (103-1) is formed in the moving die (103), the top plate (202b) slides in the guiding groove (103-1), a clamping groove (202a-1) is formed in the pressing plate (202a), the other end of the top plate (202b) is clamped with the clamping groove (202a-1), a first moving groove (202a-2) is formed in the pressing plate (202a), the locking block (202c) slides in the first moving groove (202a-2), one end of the first spring (202d) is fixed to the locking block (202c), and the other end is fixed to the inner wall of the first moving groove (202a-2), a locking groove (202b-1) is formed in the top plate (202b), and the locking block (202c) can be clamped with the locking groove (202b-1).

2. The blow molding machine ejection device according to claim 1, characterized in that: One side of the locking block (202c) is fixed with a connecting plate (202e), and the connecting plate (202e) slides in the first moving groove (202a-2).

3. The blow molding machine ejection device according to claim 2, wherein: One side of the connecting plate (202e) is fixed with a moving plate (202f), and a second moving groove (202a-3) is formed in the pressing plate (202a), and the moving plate (202f) slides in the second moving groove (202a-3).

4. The blow molding machine ejection device according to claim 3, characterized in that: A second spring (202g) is sleeved outside the top plate (202b), and one end of the second spring (202g) is fixed to the pressing plate (202a).

5. The ejecting device of the blow molding machine according to claim 4, characterized in that: The number of the ejecting rods (201b) and the second springs (202g) is two, and the number of the guiding grooves (103-1) is the same as that of the ejecting rods (201b) and corresponds to them.

6. The blow molding machine ejection device according to claim 4 or 5, characterized in that: Both the locking blocks (202c) and the first springs (202d) are four in number and are divided into two groups, respectively corresponding to one of the top plates (202b).

7. The blow molding machine ejecting device according to claim 6, wherein: The first moving groove (202a-2) communicates with the second moving groove (202a-3), and the moving plate (202f) extends outside the pressing plate (202a).

8. The blow molding machine ejection device according to claim 7, characterized in that: There are four fixing posts (102), which are respectively close to the four vertices of the moving die fixing plate (101).

9. The ejection device of the blow molding machine according to claim 7 or 8, characterized in that: The main body assembly (100) further includes a fixed die fixing plate (104) and a fixed die (105). The fixed die fixing plate (104) is arranged on one side of the moving die fixing plate (101), and the fixed die (105) is fixed on the fixed die fixing plate (104).

10. The blow molding machine ejection device according to claim 9, wherein: The main body assembly (100) further includes a base (106) and a die closing mechanism (107). The base (106) is located at the bottom of the moving die fixing plate (101), and the die closing mechanism (107) is fixed on the base (106).

Images