Handle injection molding mold for assembled multi-layer PP storage rack

Abstract

This utility model provides an injection molding mold for the handle of an assembled multi-layer PP storage rack, belonging to the field of mold technology. It includes a lower template with several handle forming grooves forming a molding cavity. The lower template also has an inwardly recessed insert mounting groove, within which a forming insert is placed, and the handle forming groove is located within the forming insert. This utility model employs a push rod-less design, with the forming inserts consisting of two blocks that slide with the lower template via an oblique guide structure. A drive rod on the top plate facilitates product ejection. Under the action of the drive rod, the two forming blocks can expand or contract. When the two forming blocks expand, they can carry the handle product out of the handle forming groove, avoiding the installation difficulties and product damage problems of traditional push rod designs, and improving the ejection reliability of small-volume handles.

Description

Technical Field

[0001] This utility model belongs to the field of mold technology and relates to an injection molding mold for the handle of an assembled multi-layer PP storage rack. Background Technology

[0002] The handles of assembled multi-layer PP storage racks are generally injection molded. In the existing technology, the forming groove of the handle mold is generally set in the forming insert that can be detachably connected to the lower template. After the product is injection molded, it needs to be ejected by the ejection mechanism set in the mold. However, since the handle is small in size, if the ejector rod in the ejection mechanism is designed to be too large, it will be difficult to install it into the mold. If the ejector rod is designed to be too small, the contact area between the ejector rod and the product will be reduced, and the product will be easily damaged. Utility Model Content

[0003] The purpose of this utility model is to address the above-mentioned problems by providing an injection molding mold for the handles of an assembled multi-layer PP storage rack.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A molded handle injection molding die for an assembled multi-layer PP storage rack includes a lower template with several handle forming grooves forming a forming cavity. The lower template also has an inwardly recessed insert mounting groove containing a forming insert. The handle forming groove is located within the forming insert, and each forming insert consists of two forming blocks that slide with the insert mounting groove via an oblique guide structure. The handle forming groove is formed on the opposite sidewalls of the two forming blocks. The lower template also has a handle slot forming rod that vertically inserts into the handle forming groove. A top plate is located on the lower side of the lower template, and a drive rod connected to the forming insert is located on the top plate. Under the action of the drive rod, the two forming blocks constituting the forming insert can expand or contract during movement.

[0006] In the aforementioned injection molding mold for the handle of the assembled multi-layer PP storage rack, the inclined guide structure includes two guide grooves that are inclined and symmetrically arranged on both sides of the insert mounting groove, and the outer end of the molding block is integrally formed with a guide part that matches the guide groove.

[0007] In the aforementioned injection molding mold for the handle of the assembled multi-layer PP storage rack, the drive rod has a rectangular cross-section, the top of the drive rod has a T-shaped sliding push-pull part, and the bottom of the molding block is recessed inward and provided with a T-shaped sliding push-pull groove.

[0008] In the aforementioned injection molding mold for the handle of the assembled multi-layer PP storage rack, when the drive rod moves upward, the sliding engagement between the sliding push-pull part at the top of the drive rod and the sliding push-pull groove at the bottom of the molding block drives the two molding blocks to move obliquely upward along the guide grooves on both sides of the insert mounting groove to expand. When the drive rod moves downward, the sliding engagement between the sliding push-pull part at the top of the drive rod and the sliding push-pull groove at the bottom of the molding block drives the two molding blocks to move obliquely downward along the guide grooves on both sides of the insert mounting groove to retract.

[0009] In the above-mentioned injection molding mold for the handle of the assembled multi-layer PP storage rack, the handle forming groove is composed of the handle body forming part and the handle connecting post forming part, and the handle slot forming rod is inserted into the handle connecting post forming part.

[0010] In the aforementioned injection molding mold for the handle of the assembled multi-layer PP storage rack, the molding insert is further provided with an internal glue inlet channel structure.

[0011] In the above-mentioned injection molding mold for the handle of the assembled multi-layer PP storage rack, the internal glue inlet structure includes a glue inlet located on the top of the molding insert and at the connection between the two molding blocks. The internal glue inlet is provided on the opposite sidewalls of the two molding blocks. One end of the internal glue inlet is connected to the glue inlet and the other end is connected to the handle connecting post molding part.

[0012] In the aforementioned injection molding mold for the handle of the assembled multi-layer PP storage rack, the main body of the handle is shaped like a four-leaf clover.

[0013] In the above-mentioned assembly-type multi-layer PP storage rack handle injection molding mold, each molding insert is provided with two handle molding grooves, and the two handle molding grooves are symmetrically arranged on both sides of the glue inlet.

[0014] In the aforementioned injection molding mold for the handle of the assembled multi-layer PP storage rack, six molding inserts are provided on the lower template, and the six molding inserts are distributed in a rectangular array.

[0015] Compared with existing technologies, the advantages of this utility model are:

[0016] 1. This utility model adopts a top rod-less design, with the forming inserts consisting of two forming blocks that slide and cooperate with the lower template through an inclined guide structure. The product is ejected in conjunction with the drive rod on the top plate. Under the action of the drive rod, the two forming blocks can expand or contract. When the two forming blocks expand, they can bring the buckle product out of the buckle forming groove, avoiding the installation difficulties and product damage problems of the traditional top rod design, and improving the ejection reliability of small-volume buckles.

[0017] 2. The inclined guide structure adopts symmetrically arranged inclined guide grooves that are adapted to the guide part at the outer end of the forming block. This design provides stable guidance for the movement of the forming block, ensuring that the two forming blocks move accurately during the expansion or contraction process, avoiding poor product forming due to movement deviation, and enhancing the stability of the ejection process.

[0018] 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

[0019] Figure 1 This is a structural diagram of the lower template;

[0020] Figure 2 This is a partial structural diagram of the lower template;

[0021] Figure 3 This is a schematic diagram of the structure of the molded insert;

[0022] Figure 4 This is a partial structural schematic diagram of the present invention;

[0023] Figure 5 yes Figure 3 Enlarged diagram of point A in the middle. Detailed Implementation

[0024] like Figures 1-5 As shown, a handle injection molding mold for an assembled multi-layer PP storage rack includes a lower template 1. The lower template 1 is provided with several handle forming grooves 2 that form a forming cavity. The lower template 1 is recessed inward with a block mounting groove 3. A forming insert 4 is provided in the block mounting groove 3. The handle forming groove 2 is located in the forming insert 4. The forming insert 4 is composed of two forming blocks 5 that slide with the block mounting groove 3 through an oblique guide structure. The handle forming groove 2 is formed on the opposite sidewalls of the two forming blocks 5. The lower template 1 is also provided with a handle slot forming rod 6 that is vertically inserted into the handle forming groove 2. A top plate 7 is provided on the lower side of the lower template 1. A drive rod 8 connected to the forming insert 4 is provided on the top plate 7. Under the action of the drive rod 8, the two forming blocks 5 that make up the forming insert 4 can expand or contract when moving.

[0025] This utility model adopts a top rod-less design, with the forming inserts consisting of two forming blocks that slide and cooperate with the lower template through an inclined guide structure. The product is ejected in conjunction with the drive rod on the top plate. Under the action of the drive rod, the two forming blocks can expand or contract. When the two forming blocks expand, they can bring the buckle product out of the buckle forming groove, avoiding the installation difficulties and product damage problems of the traditional top rod design, and improving the ejection reliability of small-volume buckles.

[0026] Specifically, the oblique guide structure includes two oblique guide grooves 9 that are symmetrically arranged on both sides of the insert mounting groove 3. The outer end of the molding block 5 is integrally formed with a guide portion 10 that matches the guide grooves 9. The oblique guide structure uses symmetrically arranged oblique guide grooves that match the guide portion at the outer end of the molding block. This design provides stable guidance for the movement of the molding block, ensuring precise movement of the two molding blocks during expansion or contraction, avoiding poor product molding caused by movement deviation, and enhancing the stability of the ejection process.

[0027] Specifically, the drive rod 8 has a rectangular cross-section, and its top end has a T-shaped sliding push-pull portion 11. The bottom of the forming block 5 is recessed inward and has a T-shaped sliding push-pull groove. The drive rod's rectangular cross-section design and the T-shaped sliding push-pull portion at its top engaging with the T-shaped sliding push-pull groove at the bottom of the forming block allow the forming block to move horizontally relative to the drive rod, ensuring the effective execution of the forming block's expansion and contraction actions.

[0028] Specifically, when the drive rod 8 moves upward, the sliding push-pull part 11 at the top of the drive rod 8 and the sliding push-pull groove at the bottom of the molding block 5 can drive the two molding blocks 5 to move obliquely upward along the guide slide grooves 9 on both sides of the insert mounting groove 3 to expand. When the drive rod 8 moves downward, the sliding push-pull part 11 at the top of the drive rod 8 and the sliding push-pull groove at the bottom of the molding block 5 can drive the two molding blocks 5 to move obliquely downward along the guide slide grooves 9 on both sides of the insert mounting groove 3 to retract. When expanding, it can smoothly detach from the product, and when retracting, it can accurately reset to form a molding cavity, solving the problem of product damage caused by the stiff action of traditional ejection mechanisms.

[0029] Specifically, the handle forming groove 2 consists of a handle body forming part 12 and a handle connecting post forming part 13. The handle slot forming rod 6 is inserted into the handle connecting post forming part 13. This partitioned design of the forming groove, combined with the forming rod, can precisely shape the complex structure of the handle, ensuring the integrity of the handle body and connecting post forming, avoiding molding defects caused by structural complexity, and improving product molding quality.

[0030] Specifically, the molding insert 4 is also provided with an internal glue inlet channel structure, which can reduce the impact of the glue inlet on the surface quality of the product.

[0031] Specifically, the internal glue inlet structure includes a glue inlet 14 located on the top of the molding insert 4 and at the connection between the two molding blocks 5. Internal glue inlets 15 are provided on the opposite sidewalls of the two molding blocks 5. One end of each internal glue inlet 15 is connected to the glue inlet 14, and the other end is connected to the handle connecting post molding part 13. The internal glue inlet structure, through the connection between the glue inlet on the top of the molding insert and the internal glue inlet on the sidewall of the molding block, guides the glue material to the handle connecting post molding part. This flow channel layout allows the glue material to accurately reach the key molding area, resulting in more uniform filling. Furthermore, it ensures that the glue outlet forms at the handle connecting post molding part, reducing the impact of glue outlet residue on the product's appearance and improving its aesthetics.

[0032] Specifically, the main body molding section 12 of the handle is shaped like a four-leaf clover. This four-leaf clover shape suits the functional and aesthetic requirements of the handle. This design ensures the structural strength of the handle while increasing grip comfort. Furthermore, the special shape is achieved through precise molding of the molding block, avoiding the damage problems that easily occur with complex-shaped products using traditional ejection methods.

[0033] Specifically, each molding insert 4 is provided with two handle molding grooves 2, and the two handle molding grooves 2 are symmetrically arranged on both sides of the glue inlet 14. Each molding insert has two handle molding grooves symmetrical to the glue inlet, realizing the production of multiple parts from one mold. This layout allows the glue to fill the two molding grooves evenly at the same time, improving production efficiency, and the symmetrical design ensures the molding consistency of the two products, reducing product quality differences caused by uneven layout.

[0034] Specifically, the lower mold plate 1 is equipped with six molding inserts 4, which are arranged in a rectangular array. This rectangular array arrangement significantly increases the yield per injection. The array distribution ensures full utilization of the mold space, uniform stress on each molding insert, and consistent molding conditions, guaranteeing product quality stability in mass production. It also facilitates standardized mold maintenance and operation.

[0035] The working principle of this utility model is as follows: This utility model adopts a top rod-less design, and sets the molding insert as two molding blocks that slide with the lower template through an inclined guide structure. With the help of the drive rod on the top plate, the product is ejected. Under the action of the drive rod, the two molding blocks can expand or contract. When the two molding blocks expand, the molding blocks can bring out the buckle product in the buckle molding groove, avoiding the installation difficulties and product damage problems of the traditional top rod design, and improving the ejection reliability of small-volume buckles.

[0036] The inclined guide structure employs symmetrically arranged inclined guide grooves that fit into the guide portion at the outer end of the forming block. This design provides stable guidance for the movement of the forming block, ensuring precise movement of the two forming blocks during expansion or contraction, avoiding product molding defects caused by movement deviation, and enhancing the stability of the ejection process. The drive rod adopts a rectangular cross-section design, with a T-shaped sliding push-pull part at the top cooperating with a T-shaped sliding push-pull groove at the bottom of the forming block. This structure allows the position of the forming block relative to the drive rod to move horizontally, ensuring the effective execution of the expansion and contraction actions of the forming block. When the drive rod 8 moves upward, it drives... The sliding engagement between the sliding push-pull part 11 at the top of the rod 8 and the sliding push-pull groove at the bottom of the molding block 5 drives the two molding blocks 5 to move obliquely upward along the guide slide grooves 9 on both sides of the insert mounting groove 3 to expand. When the drive rod 8 moves downward, the sliding engagement between the sliding push-pull part 11 at the top of the drive rod 8 and the sliding push-pull groove at the bottom of the molding block 5 drives the two molding blocks 5 to move obliquely downward along the guide slide grooves 9 on both sides of the insert mounting groove 3 to retract. When expanding, it can smoothly detach from the product, and when retracting, it can accurately reset to form a molding cavity, solving the problem of product damage caused by the stiff action of traditional ejection mechanisms.

[0037] The handle molding groove consists of a handle body molding section and a handle connecting post molding section. The handle slot molding rod is inserted into the connecting post molding section. This partitioned molding groove design, in conjunction with the molding rod, can precisely shape the complex structure of the handle, ensuring the integrity of the handle body and connecting post molding. This avoids molding defects caused by structural complexity and improves product molding quality. The internal glue inlet channel structure connects the glue inlet at the top of the molding insert to the internal glue inlet channel on the side wall of the molding block, guiding the glue to the handle connecting post molding section. This channel layout allows the glue to accurately reach the key molding parts, resulting in more uniform filling. It also ensures that the glue outlet is formed at the handle connecting post molding section, reducing the impact of glue outlet residue on the product appearance and improving the product's aesthetics.

[0038] 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 mold for injection molding handles of an assembled multi-layer PP storage rack, comprising a lower template (1), wherein the lower template (1) is provided with a plurality of handle molding grooves (2) forming a molding cavity, characterized in that, The lower template (1) is recessed inward and has a block mounting groove (3). A shaped block (4) is provided in the block mounting groove (3). The handle forming groove (2) is provided in the shaped block (4). The shaped block (4) is composed of two shaped blocks (5) that slide with the block mounting groove (3) through an oblique guide structure. The handle forming groove (2) is formed on the opposite side wall of the two shaped blocks (5). The lower template (1) is also provided with a handle slot forming rod (6) that is vertically inserted into the handle forming groove (2). The lower template (1) is provided with a top plate (7). The top plate (7) is provided with a drive rod (8) connected to the shaped block (4). Under the action of the drive rod (8), the two shaped blocks (5) that make up the shaped block (4) can expand or contract when moving.

2. The buckle injection molding mold of the assembled multi-layer PP storage rack according to claim 1, wherein, The oblique guide structure includes two guide grooves (9) that are obliquely and symmetrically arranged on both sides of the insert mounting groove (3), and the outer end of the molding block (5) is integrally formed with a guide part (10) that is adapted to the guide groove (9).

3. The buckle injection molding mold of the assembled multi-layer PP storage rack according to claim 2, characterized in that, The drive rod (8) has a rectangular cross-section, and the top of the drive rod (8) has a sliding push-pull part (11) with a T-shaped cross-section. The bottom of the molding block (5) is recessed inward and has a sliding push-pull groove with a T-shaped cross-section.

4. The buckle injection molding mold of the assembled multi-layer PP storage rack according to claim 3, characterized in that, When the drive rod (8) moves upward, the sliding push-pull part (11) at the top of the drive rod (8) and the sliding push-pull groove at the bottom of the molding block (5) can drive the two molding blocks (5) to move obliquely upward and expand along the guide grooves (9) on both sides of the insert mounting groove (3); when the drive rod (8) moves downward, the sliding push-pull part (11) at the top of the drive rod (8) and the sliding push-pull groove at the bottom of the molding block (5) can drive the two molding blocks (5) to move obliquely downward and close along the guide grooves (9) on both sides of the insert mounting groove (3).

5. The buckle injection molding mold of the assembled multi-layer PP storage shelf according to claim 1, wherein, The buckle forming groove (2) consists of a buckle body forming part (12) and a buckle connecting post forming part (13), and the buckle slot forming rod (6) is inserted into the buckle connecting post forming part (13).

6. The buckle injection molding mold of the assembled multi-layer PP storage shelf according to claim 5, characterized in that, The molding insert (4) is also provided with an internal glue inlet channel structure.

7. The buckle injection molding mold of the assembled multi-layer PP storage shelf according to claim 6, characterized in that, The internal glue inlet channel structure includes a glue inlet (14) located on the top of the molding insert (4) and at the connection between the two molding blocks (5). An internal glue inlet channel (15) is provided on the opposite side wall of the two molding blocks (5). One end of the internal glue inlet channel (15) is connected to the glue inlet (14) and the other end is connected to the buckle connecting post molding part (13).

8. The buckle injection molding mold of the assembled multi-layer PP storage shelf according to claim 5, characterized in that, The main body of the handle (12) is shaped like a four-leaf clover.

9. The buckle injection molding mold of the assembled multi-layer PP storage shelf according to claim 7, characterized in that, Each molded insert (4) is provided with two handle molding grooves (2), and the two handle molding grooves (2) are symmetrically arranged on both sides of the glue inlet (14).

10. The buckle injection molding mold of the assembled multi-layer PP storage shelf according to claim 9, characterized in that, The lower template (1) is provided with six molding inserts (4), which are arranged in a rectangular array.

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