Two-way synchronous core-pulling mechanism of injection molding die for municipal flower garden fence

Abstract

The utility model provides a kind of municipal flower garden fence injection moulding mould two-way synchronous core-pulling mechanism belongs to mould technical field.It includes upper die plate and lower die plate, the upper die plate and lower die plate between being provided with two fence forming cavities, two fence forming cavities are parallelly arranged.Through being provided with two parallel fence forming cavities between upper die plate and lower die plate, double fence synchronous forming is realized, and production efficiency is improved;The forming block mounting seat of the symmetry of lower die plate two sides is inserted from the end of fence forming cavity, cooperates with the core-pulling mechanism and the plug-in portion forming structure, and the internal chamber and the plug-in slot required for forming fence are directly formed in injection molding process, without subsequent processing, the design solves the problem that traditional mould cannot integrally form fence with plug-in slot, while double-chamber and symmetrical structure ensure the consistency of formed parts, reduce the dimensional error caused by secondary processing, and improve product pass rate.

Description

Technical Field

[0001] This utility model belongs to the field of mold technology and relates to a bidirectional synchronous core-pulling mechanism for injection molding molds of municipal flower bed fences. Background Technology

[0002] In municipal greening projects, flower bed fences are key facilities for defining green areas, protecting flowers and vegetation, and improving the neatness of the landscape. Their ease of installation and structural stability directly affect the efficiency of construction and the effect of later use. To meet the needs of rapid assembly and disassembly of fences, interlocking slots are usually pre-set in the middle of the fence. Through the interlocking of the slots, multiple sections of the fence can be precisely connected, avoiding the problems of cumbersome construction and difficult disassembly caused by traditional welding or bolt connection methods. At the same time, it ensures the flatness and resistance to external forces of the overall fence after assembly, adapting to the needs of frequent maintenance or adjustment of green areas in municipal scenarios.

[0003] However, existing injection molds for flower bed fences have significant technical shortcomings: limited by mold structure design, their molding chambers are mostly integrated fixed structures, unable to create a suitable molding space for the interlocking slots in the middle of the fence; to produce fences with interlocking slots, a basic fence blank without interlocking slots must first be injection molded, and then the interlocking slots must be created in the middle of the fence using subsequent machining methods such as milling and drilling. This "injection molding + secondary processing" production model not only increases the number of processes, leading to a significant reduction in production efficiency (the production cycle of a single fence is extended by more than 30%), but is also more prone to defects such as cracking at the edges of the interlocking slots and insufficient dimensional accuracy of the slots due to mechanical stress and dimensional deviations during secondary processing. These defects can range from minor issues like gaps and loosening during fence assembly, affecting structural stability, to more serious issues like fence scrapping, significantly increasing production costs and scrap rates. Furthermore, the waste generated during secondary processing is difficult to recycle, which not only wastes raw materials but also does not conform to the concept of green production and cannot meet the needs of municipal engineering for efficient, low-cost, and high-quality production. Therefore, there is an urgent need for a mold technology that can directly injection mold flower bed fences with interlocking grooves to break through the existing production bottlenecks.

[0004] For example, a Chinese patent discloses a flower bed fence injection mold with a bidirectional synchronous core-pulling mechanism [application number: 201720356616.1], which includes a first template and a second template. A core is fixedly installed on the side of the first template close to the second template, and a cavity is provided on the side of the second template close to the first template. A set of core-pulling mechanisms is provided on the opposite sides of the core, and a docking column is provided between the two sets of core-pulling mechanisms. Utility Model Content

[0005] The purpose of this utility model is to address the above-mentioned problems by providing a bidirectional synchronous core-pulling mechanism for injection molding molds of municipal flower bed fences.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A bidirectional synchronous core-pulling mechanism for injection molding of municipal flower bed fences includes an upper template and a lower template. Two fence molding cavities are provided between the upper and lower templates and are arranged in parallel. Molding block mounting seats are symmetrically arranged on the left and right sides of the lower template. Two internal cavity molding blocks, which are respectively arranged corresponding to the two fence molding cavities and can be inserted into the fence molding cavities from the ends of the cavities, are fixedly connected to the inner ends of the molding block mounting seats. Lateral core-pulling mechanisms connected to the molding block mounting seats are also provided on both sides of the lower template. An insertion part molding structure is also provided between the lower template and the two opposing internal cavity molding blocks.

[0008] In the aforementioned bidirectional synchronous core-pulling mechanism of the municipal flower bed fence injection molding mold, the insertion part forming structure includes three vertically fixed insertion part forming rods that are distributed along a straight line on the lower template. The insertion part forming rods are located between two internal cavity forming blocks. The inner end of each internal cavity forming block is recessed inward and has a semi-circular groove corresponding to the insertion part forming rod.

[0009] In the aforementioned bidirectional synchronous core-pulling mechanism of the municipal flower bed fence injection molding mold, a snap-fit ​​groove forming block is protruding from the semi-circular groove, and snap-fit ​​groove forming grooves corresponding to the snap-fit ​​groove forming block are symmetrically arranged on both sides of the insertion part forming rod.

[0010] In the aforementioned bidirectional synchronous core-pulling mechanism for injection molding of municipal flower bed fences, the internal cavity molding block is also provided with two support plate molding grooves arranged parallel to the direction in which the lateral core-pulling mechanism drives the internal cavity molding block to move.

[0011] In the aforementioned bidirectional synchronous core-pulling mechanism for injection molding of municipal flower bed fences, the lateral core-pulling mechanism includes translation slides on the extensions on the left and right sides of the lower template. The outer ends of the translation slides are fixedly connected to horizontally arranged translation drivers. The translation drivers are connected to the molding block mounting base through a linear connecting block. The translation drivers are located on the upper side of the lower template.

[0012] In the aforementioned bidirectional synchronous core-pulling mechanism for injection molding of municipal flower bed fences, the lateral core-pulling mechanism includes translation slides on the extensions on the left and right sides of the lower template. A translation driver is fixedly connected to the bottom of the lower template. A connecting groove is provided through the bottom of the translation slide. The output shaft of the translation driver is connected to the molding block mounting base through an L-shaped connecting block provided at the connecting groove.

[0013] In the aforementioned bidirectional synchronous core-pulling mechanism for injection molding of municipal flower bed fences, a bottom molding block can also be detachably provided in the middle of the lower template.

[0014] In the aforementioned bidirectional synchronous core-pulling mechanism of the municipal flower bed fence injection molding mold, the internal cavity molding block is detachably fixed to the molding block mounting base by several bolts. The internal cavity molding block is provided with several internal cooling channels. The molding block mounting base is provided with coolant inlet and outlet pipes. The bottom molding block is also provided with a lower cooling channel connected to the coolant inlet and outlet pipes.

[0015] In the aforementioned bidirectional synchronous core-pulling mechanism for injection molding of municipal flower bed fences, the front and rear sides of the lower template are also provided with front and rear core-pulling mechanisms that are respectively connected to the outside of the two fence molding cavities.

[0016] In the aforementioned bidirectional synchronous core-pulling mechanism for municipal flower bed fence injection molding mold, the front and rear side core-pulling mechanism includes a side core-pulling block slidably disposed on the lower template. The inner end of the side core-pulling block is connected to the fence molding cavity. It also includes a driving structure disposed on the upper template. The driving structure includes two driving rods that are inclined and fixed to the bottom of the upper template. The driving rods are inserted into the side core-pulling block and slidably connected to the side core-pulling block. The side core-pulling block is also provided with a side cooling channel.

[0017] Compared with existing technologies, the advantages of this utility model are:

[0018] 1. By setting two parallel fence molding cavities between the upper and lower templates, simultaneous molding of two fences is achieved, improving production efficiency. The molding block mounting seats and internal cavity molding blocks symmetrically arranged on both sides of the lower template can be inserted from the end of the fence molding cavity. With the help of the side core pulling mechanism and the insertion part molding structure, the internal cavity and insertion groove required for the fence are directly formed during the injection molding process without the need for subsequent processing. This design solves the problem that traditional molds cannot integrally mold fences with insertion grooves. At the same time, the dual cavities and symmetrical structure ensure the consistency of the molded parts, reduce dimensional errors caused by secondary processing, and improve the product qualification rate.

[0019] Other advantages, objectives and features of this invention will be partly apparent from the following description, and partly understood by those skilled in the art through study and practice of this invention. Attached Figure Description

[0020] Figure 1 This is a cross-sectional view of the present invention after combining Embodiment 1 and Embodiment 2;

[0021] Figure 2 This is a structural diagram of the lower template area;

[0022] Figure 3This is a partial structural schematic diagram of the present invention;

[0023] Figure 4 This is a schematic diagram of the lateral core-pulling mechanism in Embodiment 2;

[0024] Figure 5 yes Figure 2 Enlarged diagram of point A in the middle. Detailed Implementation

[0025] Example 1

[0026] like Figures 1-5 As shown, a bidirectional synchronous core-pulling mechanism for injection molding of municipal flower bed fences includes an upper template 1 and a lower template 2. Two fence molding cavities 3 are provided between the upper template 1 and the lower template 2, and the two fence molding cavities 3 are arranged in parallel. Molding block mounting seats 4 are symmetrically arranged on the left and right sides of the lower template 2. Two internal cavity molding blocks 5 are fixedly connected to the inner end of the molding block mounting seats 4, which are respectively arranged corresponding to the two fence molding cavities 3 and can be inserted into the fence molding cavities 3 from the ends of the fence molding cavities 3. Lateral core-pulling mechanisms 6 connected to the molding block mounting seats 4 are also provided on both sides of the lower template 2. An insertion part molding structure 7 is also provided between the lower template 2 and the two opposing internal cavity molding blocks 5.

[0027] In this invention, two parallel fence forming cavities are set between the upper and lower templates to achieve simultaneous forming of two fences, thereby improving production efficiency. The forming block mounting seats and internal cavity forming blocks symmetrically arranged on both sides of the lower template can be inserted from the end of the fence forming cavity. With the help of the lateral core pulling mechanism and the insertion part forming structure, the internal cavity and insertion groove required for the fence are directly formed during the injection molding process without the need for subsequent processing. This design solves the problem that traditional molds cannot form fences with insertion grooves in one piece. At the same time, the double cavity and symmetrical structure ensure the consistency of the molded parts, reduce the dimensional errors caused by secondary processing, and improve the product qualification rate.

[0028] Specifically, the interlocking part forming structure 7 includes three vertically fixed interlocking part forming rods 8 distributed in a straight line on the lower template 2. The interlocking part forming rods 8 are positioned between two internal cavity forming blocks 5. The inner end of each internal cavity forming block 5 is recessed inward and has a semi-circular groove 9 corresponding to the interlocking part forming rods 8. The interlocking part forming structure uses three vertically and linearly distributed interlocking part forming rods, which, together with the semi-circular grooves at the inner ends of the internal cavity forming blocks, precisely correspond to the forming requirements of the fence interlocking groove. The interlocking part forming rods are located between the two internal cavity forming blocks, forming a complete interlocking groove forming space with the semi-circular grooves. This ensures that the molten material can be fully filled during injection molding, forming a well-structured interlocking groove. This design solves the problem of traditional molds having difficulty in accurately positioning the interlocking groove forming position, avoiding defects such as material shortages and deformation in the interlocking groove. At the same time, the linearly distributed forming rods ensure that the interlocking groove is evenly distributed in the middle of the fence, meeting the assembly accuracy requirements of municipal flower bed fences and improving the stability of fence splicing.

[0029] Specifically, a snap-fit ​​groove forming block 10 protrudes from the semi-circular groove 9, and snap-fit ​​groove forming slots 11 corresponding to the snap-fit ​​groove forming block 10 are symmetrically arranged on both sides of the insertion part forming rod 8. The snap-fit ​​groove forming block in the semi-circular groove and the snap-fit ​​groove forming slots on both sides of the insertion part forming rod cooperate with each other, and the snap-fit ​​structure in the insertion groove can be formed simultaneously during the injection molding process without the need for additional molds or processing steps. This design solves the problem that traditional molds cannot integrally form insertion grooves with snap-fit ​​structures, and avoids damage to the fence body during subsequent processing of the snap-fit ​​structure. At the same time, the precise correspondence between the snap-fit ​​groove forming block and the forming slot ensures that the snap-fit ​​structure is dimensionally consistent and tightly interlocked, improving the connection strength of the fence after insertion and preventing loosening or falling off during use.

[0030] Preferably, the internal cavity forming block 5 is further provided with two support plate forming grooves 12 arranged parallel to the direction in which the lateral core-pulling mechanism 6 drives the internal cavity forming block 5 to move. The two support plate forming grooves within the internal cavity forming block, parallel to the driving direction of the lateral core-pulling mechanism, allow for simultaneous forming of the support plate structure within the cavity while forming the fence's internal cavity. This design solves the problem of traditional molds requiring separate forming of the support plate before assembly with the fence, reducing assembly steps and minimizing assembly errors. The support plate forming grooves, parallel to the core-pulling direction, ensure that the support plate structure is not damaged during core-pulling, guaranteeing the integrity and structural strength of the connection between the support plate and the fence body, improving the overall load-bearing capacity of the fence, and meeting the needs of long-term outdoor use of municipal flower bed fences.

[0031] In this embodiment, the lateral core-pulling mechanism 6 includes translation slides 13 arranged on the extensions on both sides of the lower template 2. A horizontally arranged translation driver 14 is fixedly connected to the outer end of each translation slide 13. The translation driver 14 is connected to the molding block mounting base 4 via a linear connecting block 15. The translation driver 14 is located on the upper side of the lower template 2. By providing translation slides on the extensions on both sides of the lower template, and cooperating with the translation driver and linear connecting block on the upper side, the lateral core-pulling mechanism drives the molding block mounting base to move the internal cavity molding block smoothly along the slides, achieving precise core pulling. The translation driver is located on the upper side of the lower template, facilitating installation, debugging, and maintenance. Simultaneously, the linear connecting block ensures stable transmission of driving force, preventing jamming or offset during core pulling. This design solves the problems of unstable driving and low core-pulling accuracy in traditional lateral core-pulling mechanisms, ensuring smooth entry and exit of the internal cavity molding block into and out of the enclosure molding cavity, reducing the scrap of molded parts due to core-pulling problems, simplifying the mechanism structure, and reducing the equipment failure rate.

[0032] Example 2

[0033] The structure and working principle of Embodiment 2 are basically the same as those of Embodiment 1, the difference being:

[0034] In this embodiment, the lateral core-pulling mechanism 6 includes translation slides 13 arranged on the extensions on the left and right sides of the lower mold plate 2. A translation driver 14 is fixedly connected to the bottom of the lower mold plate 2. A connecting groove 25 is provided through the bottom of the translation slide 13. The output shaft of the translation driver 14 is connected to the molding block mounting seat 4 through an L-shaped connecting block 16 arranged at the connecting groove. The lateral core-pulling mechanism sets the translation driver at the bottom of the lower mold plate and connects it to the molding block mounting seat through the connecting groove and the L-shaped connecting block. This makes full use of the space at the bottom of the lower mold plate, avoids the driver occupying the upper operating space, and improves the rationality of the overall mold layout. The L-shaped connecting block can flexibly adapt to the connection between the bottom driver and the upper molding block mounting seat, ensuring efficient transmission of driving force. The cooperation between the translation slide and the connecting groove ensures the stability and accuracy of the core-pulling process. This design solves the problem of limited operating space caused by the traditional upper-side installation of the driver, making it easier for operators to perform operations such as mold cleaning and material addition. At the same time, the bottom installation method reduces the risk of the driver being affected by the high temperature of injection molding and extends the service life of the equipment.

[0035] Those skilled in the art should understand that the translation actuator can be a hydraulic cylinder, a pneumatic cylinder, or a linear motor, etc.

[0036] Specifically, a bottom forming block 17 can be detachably installed in the middle of the lower template 2. This detachable bottom forming block can be replaced according to the bottom structure requirements of different specifications of municipal flower bed fences, without replacing the entire lower template, thus reducing mold modification costs and replacement time. The detachable design facilitates the maintenance, repair, or replacement of the bottom forming block. Furthermore, when producing different fence models, only the bottom forming block needs to be quickly replaced, improving the mold's versatility and production flexibility. This design solves the problems of poor versatility and high replacement costs of traditional molds, adapts to the diverse specification requirements of municipal flower bed fences, and improves equipment utilization.

[0037] Specifically, the internal cavity molding block 5 is detachably fixed to the molding block mounting base 4 by several bolts. The internal cavity molding block 5 is provided with several internal cooling channels 18, and the molding block mounting base 4 is provided with coolant inlet and outlet pipes 19. The bottom molding block 17 is also provided with a lower cooling channel 20 connected to the coolant inlet and outlet pipes 19. The internal cavity molding block is detachably fixed by bolts, facilitating the replacement of molding blocks according to the specifications of the fence's internal cavity. Simultaneously, the internal cooling channels within the molding block are connected to the coolant inlet and outlet pipes of the molding block mounting base and the lower cooling channel of the bottom molding block, forming a complete cooling system. This system can quickly reduce the temperature of the injection molded part and shorten the cooling time. This design solves the problems of uneven cooling and low cooling efficiency in traditional molds, which lead to molded part deformation and long production cycles. The detachable molding block improves mold adaptability, while the cooling system ensures rapid shaping and dimensional stability of the molded part, reducing the scrap rate caused by cooling problems, extending mold life, and improving production efficiency.

[0038] Specifically, the lower mold plate 2 is equipped with front and rear core-pulling mechanisms 21 on both sides, which are respectively connected to the outer sides of the two fence forming cavities 3. The front and rear core-pulling mechanisms on both sides of the lower mold plate are connected to the outer sides of the two fence forming cavities. They can pull the cores of the outer structure of the fence while pulling the cores laterally, realizing multi-directional synchronous core pulling of the entire fence. This design solves the problem that traditional molds can only pull the cores in one or two directions and cannot form complex outer structures of fences. It ensures that the outer side of the fence can meet the design requirements without subsequent processing, reducing processing steps. At the same time, multi-directional synchronous core pulling ensures that the demolding sequence of each part of the molded part is reasonable, avoiding damage to the molded part caused by improper demolding sequence, and improving product qualification rate and production efficiency.

[0039] Specifically, the front and rear side core-pulling mechanism 21 includes a side core-pulling block 22 slidably disposed on the lower template 2. The inner end of the side core-pulling block 22 is connected to the fence forming cavity 3. It also includes a driving structure disposed on the upper template 1. The driving structure includes two driving rods 23 inclinedly fixed to the bottom of the upper template 1. The driving rods 23 are inserted into the side core-pulling block 22 and slidably connected to the side core-pulling block 22. The side core-pulling block 22 is also provided with a side cooling channel 24. The front and rear side core-pulling mechanism drives the side core-pulling block to slide through the driving rods of the upper template. The side core-pulling is realized synchronously by the opening and closing action of the upper template. There is no need to set up an additional independent driving device, which simplifies the mold structure and reduces equipment costs and energy consumption. The side cooling channel in the side core-pulling block can quickly cool the side forming structure and ensure the forming quality of the side structure. This design solves the problem of traditional side core-pulling mechanisms requiring independent drive and having a complex structure. It achieves linkage between mold opening and closing and side core pulling, improving operational convenience and production efficiency. The side cooling channels ensure the dimensional accuracy and molding stability of the fence side structure, avoiding defects such as deformation and burrs caused by insufficient cooling.

[0040] The working principle of this utility model is as follows: By setting two parallel fence forming cavities between the upper and lower templates, the simultaneous forming of two fences can be achieved, improving production efficiency; the forming block mounting seats and internal cavity forming blocks symmetrically arranged on both sides of the lower template can be inserted from the end of the fence forming cavity. With the cooperation of the lateral core pulling mechanism and the insertion part forming structure, the internal cavity and insertion groove required for the fence can be directly formed during the injection molding process without subsequent processing. This design solves the problem that traditional molds cannot form fences with insertion grooves in one piece. At the same time, the double cavity and symmetrical structure ensure the consistency of the molded parts, reduce the dimensional errors caused by secondary processing, and improve the product qualification rate.

[0041] The interlocking part molding structure employs three vertically and linearly distributed interlocking part molding rods, which, in conjunction with the semi-circular grooves at the inner ends of the internal cavity molding blocks, precisely correspond to the molding requirements of the fence interlocking slots. The interlocking part molding rods are located between two internal cavity molding blocks, forming a complete interlocking slot molding space with the semi-circular grooves. This ensures that the molten material can fully fill the space during injection molding, forming a well-structured interlocking slot. This design solves the problem of traditional molds' difficulty in accurately positioning the interlocking slot molding position, avoiding defects such as material shortages and deformation. Simultaneously, the linearly distributed molding rods ensure that the interlocking slots are evenly distributed in the middle of the fence, meeting the assembly precision requirements of municipal flower bed fences and improving the stability of fence splicing. The interlocking slot molding blocks within the semi-circular grooves... The interlocking grooves on both sides of the molding rod of the interlocking part cooperate with each other to simultaneously form the interlocking structure within the interlocking groove during injection molding, eliminating the need for additional molds or processing steps. This design solves the problem that traditional molds cannot integrally form interlocking grooves with interlocking structures, avoiding damage to the fence body during subsequent processing of the interlocking structure. Simultaneously, the precise correspondence between the interlocking groove molding block and the molding groove ensures consistent dimensions and tight engagement of the interlocking structure, improving the connection strength after fence insertion and preventing loosening or detachment during use. Two support plate molding grooves within the internal cavity molding block are parallel to the driving direction of the lateral core-pulling mechanism, allowing simultaneous molding of the support plate structure within the cavity while molding the fence's internal cavity. This design solves the problem of traditional molds requiring separate molding of support plates before assembly with the fence, reducing assembly steps and minimizing assembly errors. The support plate molding grooves parallel to the core-pulling direction ensure that the support plate structure is not damaged during core-pulling, guaranteeing the integrity and structural strength of the connection between the support plate and the fence body, improving the overall load-bearing capacity of the fence, and meeting the needs of long-term outdoor use of municipal flower bed fences.

[0042] The lateral core-pulling mechanism uses translation slides on both sides of the lower template extension, along with the translation driver and linear connecting block on the upper side, to drive the molding block mounting base to move the internal cavity molding block smoothly along the slides, achieving precise core pulling. The translation driver is located on the upper side of the lower template for easy installation, debugging, and maintenance. At the same time, the linear connecting block ensures stable transmission of driving force and avoids jamming or offset during the core pulling process. This design solves the problems of unstable driving and low core pulling accuracy of traditional lateral core-pulling mechanisms, ensuring that the internal cavity molding block can smoothly enter and exit the fence molding cavity, reducing the scrap of molded parts due to core pulling problems, and simplifying the mechanism structure and reducing the equipment failure rate.

[0043] The detachable bottom forming block in the middle of the lower template can be replaced according to the bottom structure requirements of different specifications of municipal flower bed fences, without replacing the entire lower template, thus reducing mold modification costs and replacement time. The detachable design facilitates maintenance, repair, or replacement of the bottom forming block. Furthermore, when producing different fence models, only the bottom forming block needs to be quickly replaced, improving the mold's versatility and production flexibility. This design solves the problems of poor versatility and high replacement costs of traditional molds, adapting to the diverse specification requirements of municipal flower bed fences and improving equipment utilization. The internal cavity forming block is detachable via bolts. The removable fixing allows for easy replacement of the molding blocks according to the internal cavity specifications of the fence. Simultaneously, the internal cooling channels within the molding blocks are connected to the coolant inlet and outlet pipes of the molding block mounting base and the lower cooling channels of the bottom molding block, forming a complete cooling system. This system can quickly reduce the temperature of the injection molded parts and shorten cooling time. This design solves the problems of uneven cooling and low cooling efficiency in traditional molds, which lead to molded part deformation and long production cycles. The detachable molding blocks improve mold adaptability, while the cooling system ensures rapid shaping and dimensional stability of the molded parts, reducing scrap rates caused by cooling issues, extending mold life, and improving production efficiency.

[0044] The front and rear side core-pulling mechanisms, located on both sides of the lower mold, are connected to the outer sides of the two fence forming cavities. This allows for simultaneous side core pulling and core pulling of the outer fence structure, achieving multi-directional synchronous core pulling of the entire fence. This design solves the problem of traditional molds only being able to pull cores in one or two directions, making it impossible to form complex outer fence structures. It ensures that the outer fence structure meets design requirements without further processing, reducing processing steps. Simultaneously, multi-directional synchronous core pulling ensures a reasonable demolding sequence for each part, avoiding damage caused by improper demolding order, improving product qualification rate and production efficiency. The front and rear side core-pulling mechanisms drive the side core-pulling blocks to slide via the drive rod of the upper mold. The opening and closing action of the upper mold simultaneously achieves side core pulling, eliminating the need for an additional independent drive device, simplifying the mold structure, and reducing equipment costs and energy consumption. The side cooling channels within the side core-pulling blocks provide rapid cooling of the side forming structure, ensuring the quality of the side structure forming. This design solves the problem of traditional side core-pulling mechanisms requiring independent drive and having a complex structure. It achieves linkage between mold opening and closing and side core pulling, improving operational convenience and production efficiency. The side cooling channels ensure the dimensional accuracy and molding stability of the fence side structure, avoiding defects such as deformation and burrs caused by insufficient cooling.

[0045] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A two-way synchronous core-pulling mechanism of a municipal garden fence injection molding mold, comprising an upper mold plate (1) and a lower mold plate (2), characterized in that, Two fence forming cavities (3) are provided between the upper template (1) and the lower template (2). The two fence forming cavities (3) are arranged in parallel. Forming block mounting seats (4) are symmetrically arranged on the left and right sides of the lower template (2). Two internal cavity forming blocks (5) are fixedly connected to the inner end of the forming block mounting seats (4), which are respectively arranged corresponding to the two fence forming cavities (3) and can be inserted into the fence forming cavity (3) from the end of the fence forming cavity (3). Lateral core pulling mechanisms (6) connected to the forming block mounting seats (4) are also provided on both sides of the lower template (2). An insertion part forming structure (7) is also provided between the lower template (2) and the two opposing internal cavity forming blocks (5).

2. The two-way synchronized core-pulling mechanism for injection molding of a municipal garden fence according to claim 1, characterized in that, The insertion part forming structure (7) includes three insertion part forming rods (8) that are vertically fixed on the lower template (2) and distributed along a straight line. The insertion part forming rods (8) are arranged between two internal cavity forming blocks (5). The inner end of the internal cavity forming block (5) is recessed inward and has a semi-circular groove (9) corresponding to the insertion part forming rods (8).

3. The two-way synchronized core-pulling mechanism for a municipal garden fence injection molding mold according to claim 2, characterized in that, The semi-circular groove (9) is provided with a snap-fit ​​groove forming block (10) protruding outwards, and the plug forming rod (8) is provided with snap-fit ​​groove forming grooves (11) on both sides corresponding to the snap-fit ​​groove forming block (10).

4. The two-way synchronized core-pulling mechanism for injection molding of a municipal garden fence according to claim 3, characterized in that, The internal cavity forming block (5) is also provided with two support plate forming grooves (12) arranged parallel to the direction in which the lateral core pulling mechanism (6) drives the internal cavity forming block (5) to move.

5. The two-way synchronized core-pulling mechanism for injection-molding a municipal garden-fence according to any one of claims 1-4, characterized in that, The lateral core-pulling mechanism (6) includes translation slides (13) on the extensions on the left and right sides of the lower template (2). The outer end of the translation slides (13) is fixedly connected to a horizontally arranged translation driver (14). The translation driver (14) is connected to the molding block mounting base (4) through a linear connecting block (15). The translation driver (14) is located on the upper side of the lower template (2).

6. The bidirectional synchronous core-pulling mechanism for injection molding of municipal flower bed fences according to any one of claims 1-4, characterized in that, The lateral core-pulling mechanism (6) includes translation slides (13) on the extensions on the left and right sides of the lower template (2). The bottom of the lower template (2) is fixedly connected to a translation driver (14). A connecting groove (25) is provided through the bottom of the translation slide (13). The output shaft of the translation driver (14) is connected to the molding block mounting base (4) through an L-shaped connecting block (16) provided at the connecting groove.

7. The bidirectional synchronous core-pulling mechanism for injection molding of municipal flower bed fences according to any one of claims 1-4, characterized in that, The lower template (2) is also detachably provided with a bottom forming block (17) in the middle.

8. The bidirectional synchronous core-pulling mechanism for injection molding of municipal flower bed fences according to claim 7, characterized in that, The internal cavity molding block (5) is detachably fixed to the molding block mounting base (4) by several bolts. The internal cavity molding block (5) is provided with several internal cooling channels (18). The molding block mounting base (4) is provided with coolant inlet and outlet pipes (19). The bottom molding block (17) is also provided with a lower cooling channel (20) connected to the coolant inlet and outlet pipes (19).

9. The bidirectional synchronous core-pulling mechanism for injection molding of municipal flower bed fences according to claim 8, characterized in that, The lower template (2) is also provided with front and rear core-pulling mechanisms (21) on the front and rear sides, which are respectively connected to the outside of the two fence forming cavities (3).

10. The bidirectional synchronous core-pulling mechanism for injection molding of municipal flower bed fences according to claim 9, characterized in that, The front and rear side core-pulling mechanism (21) includes a side core-pulling block (22) slidably disposed on the lower template (2), the inner end of the side core-pulling block (22) being connected to the fence forming cavity (3), and also includes a driving structure disposed on the upper template (1), the driving structure including two driving rods (23) inclined and fixed at the bottom of the upper template (1), the driving rods (23) being inserted into the side core-pulling block (22) and slidably connected to the side core-pulling block (22); the side core-pulling block (22) is also provided with a side cooling channel (24).

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