A new type of split template structure for injection molding machine

Abstract

The utility model relates to the technical field of injection molding machines, and discloses a novel split template structure for an injection molding machine, comprising a template body, wherein the template body comprises a front template, a rear template and an assembly structure which is fixedly connected when the two are accurately positioned, the assembly structure comprises a positioning protection structure which has both positioning and protection functions and is arranged between the front template and the rear template, and a fixed connection structure which limits the relative movement of the two after the two are positioned, the positioning protection structure comprises a positioning boss convexly arranged at the center of the rear template, a positioning guide groove concavely arranged at the center of the front template for guiding the insertion of the positioning boss, and a protection structure which has both anti-skid and anti-wear properties and is arranged between the front template and the rear template. The split template structure solves the problem of limited size of a traditional integrated template, greatly improves the upper limit of the size, ensures casting and processing accuracy, and reduces transportation difficulty and cost.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molding machines, in particular to a novel split template structure of an injection molding machine. Background Art

[0002] The two-platen injection molding machine is a relatively common large-scale injection device in the current injection molding machine industry.

[0003] Chinese patent application number 201711458696.2 discloses a two-plate clamping device, in which a movable platen and a fixed platen are arranged side by side, and the four corners of the movable platen and the fixed platen are connected by four tie rods. One end of each tie rod is provided with locking teeth spaced along the circumference, and the tie rod locking teeth can be locked with locking teeth spaced along the circumference by a brake nut provided on the movable platen and fixed to the movable platen. The other end of each tie rod passes through the fixed platen and is connected to the locking piston of the locking cylinder.

[0004] When the mold clamping device is closing the mold, the locking teeth of the tie rod can be locked by the locking teeth arranged at intervals along the circumference of the brake nut and fixed to the movable mold plate. The locking cylinder applies a driving force to the tie rod, so that the movable mold plate and the fixed mold plate press the mold to achieve mold locking.

[0005] However, in actual application, the size of the movable platen and the fixed platen needs to change accordingly according to the change of the mold size. When the size of the two is large enough, a series of problems will arise: the movable platen and the fixed platen are generally produced by casting processing technology. The size and weight of the integrated platen are too large, which will lead to the production mold size being too large, making manufacturing difficult and casting accuracy difficult to guarantee; the size of the processing machine tool is too large, clamping and positioning are difficult, and processing accuracy is difficult to guarantee; in the handling of each link such as processing, transportation, assembly, and maintenance, the excessive size and weight will make it difficult to provide matching handling conditions in each link, and will increase the workload of a lot of manpower and equipment. Utility Model Content

[0006] The utility model provides a novel split template structure for injection molding machines to solve the shortcomings of the prior art that template production size is limited, and excessive size will lead to difficulty in guaranteeing casting and processing accuracy and excessive transportation difficulty and cost.

[0007] In order to solve the above technical problems, the utility model is solved by the following technical solutions:

[0008] A novel split template structure for an injection molding machine comprises a template body, the template body comprises a front template, a rear template and an assembly structure which is fixedly connected when the two are precisely positioned, the assembly structure comprises a positioning protection structure which has both positioning and protection functions and a fixed connection structure which limits the relative movement of the two after the two are positioned, the positioning protection structure comprises a positioning boss which is convexly arranged at the center of the rear template, a positioning guide groove which is concavely arranged at the center of the front template for guiding the insertion of the positioning boss, and a protective structure which has both anti-slip and anti-wear properties and is arranged between the front template and the rear template.

[0009] By adopting the above scheme, the one-piece template is disassembled into a front template and a rear template, and the size of the disassembled front template and rear template is reduced, and the weight of each is reduced. The front template and the rear template are forged and processed separately to ensure the forging and processing accuracy; and the two can be transported separately, which reduces the size and weight, and reduces the difficulty and cost of transportation. When needed, take out the appropriate front template and rear template, and complete the fixed connection by splicing them through the assembly structure; and because the front template and the rear template are manufactured separately, the upper limit of the size of the template body formed after the fixed connection can be greatly increased. The fixed connection structure enables the front template and the rear template to be fixedly connected, but because the front template and the rear template need to be used in the two-plate clamping structure after being assembled to form the template body, the template body will be affected when the mold is pressed. Figure 1 The extrusion pressure shown in the figure leads to the risk of relative slippage between the front template and the rear template, resulting in shear force on the fixed connection structure, shortening the service life of the fixed connection structure and increasing the risk of using the template body. Therefore, it is necessary to set a positioning protection structure. When the two are fixedly connected, the positioning boss and the positioning guide groove can limit the relative slippage between the two to avoid the fixed connection structure being subjected to shear force. In addition, the positioning boss and the positioning guide groove can also realize the pre-positioning function, which is convenient for the precise installation of the fixed connection structure. The contact surface between the positioning boss and the positioning guide groove and the contact surface between the front template and the rear template are affected by the extrusion force of the mold when the template body is working, resulting in sliding friction and consumption wear. Therefore, a protective structure is set to reduce wear, extend the service life and protect the matching accuracy.

[0010] Preferably, the fixed connection structure includes a threaded groove recessed on the front template and a bolt that passes through the rear template and engages with the threaded groove to limit the relative movement of the front template and the rear template.

[0011] By adopting the above scheme, the bolts and the thread grooves are fixedly connected through thread engagement. If there is a risk of relative slippage between the front template and the rear template, the bolts will be deformed or broken due to shear force. The cooperation of the positioning boss and the positioning guide groove can limit the relative slippage between the front template and the rear template to avoid shear force on the bolts.

[0012] Preferably, the protective structure includes a plurality of first gaskets fixedly arranged at circumferential intervals around the positioning boss on the inner side wall of the positioning guide groove and a plurality of second gaskets fixedly arranged at circumferential intervals around the positioning guide groove on the side of the front template close to the rear template. After the front template and the rear template are assembled, the first gaskets abut against the outer side surface of the positioning boss and the second gaskets abut against one side of the positioning boss set on the rear template.

[0013] By adopting the above scheme, the first gasket is fixedly arranged on the inner wall of the positioning guide groove. After the positioning boss is inserted into the positioning guide groove and the front template and the rear template are pressed and connected by a fixed connection structure, the outer wall of the positioning boss abuts against the first gasket to avoid radial movement between the two. At the same time, the first gasket only needs to be replaced during long-term use, which is convenient and low-cost. Similarly, the second gasket is worn between the front template and the rear template to play a protective role.

[0014] Preferably, the first gasket and the second gasket are made of a metal material, and the hardness of the metal material is less than the hardness of the metal material used to prepare the template body.

[0015] By adopting the above scheme, in order to ensure that after assembly, no radial movement occurs between the positioning boss and the positioning guide groove, and the front template and the rear template do not approach each other, the first gasket and the second gasket need to be made of a metal material with greater hardness to avoid elastic deformation causing relative movement between the positioning boss and the positioning guide groove or the front template and the rear template; and in order to ensure that the first gasket and the second gasket play a protective role against wear, the hardness of the metal material used to make the two gaskets needs to be lower than the hardness of the metal material used to make the template body.

[0016] Preferably, a lubrication structure for lubricating the first gasket and the second gasket is provided on the front template, and a lubrication structure for lubricating the first gasket and the second gasket is provided on the front template, the lubrication structure includes a first oil guide groove concentric with the positioning guide groove concavely arranged on the inner annular surface of the positioning guide groove, a second oil guide groove concentric with the positioning guide groove concavely arranged on a side of the front template close to the positioning boss, and lubricant injected into the first oil guide groove and the second oil guide groove, the opening of the first oil guide groove faces the first gasket, and the opening of the second oil guide groove faces the second gasket.

[0017] By adopting the above scheme, a lubrication environment is provided for the first gasket through the first oil guide groove, and a lubrication environment is provided for the second gasket through the second oil guide groove, thereby reducing the friction consumption between the positioning boss and the first gasket and the rear template and the second gasket, and extending the service life of the first gasket and the second gasket.

[0018] Preferably, the first oil guide groove and the second oil guide groove are annular or arc-shaped. When the first oil guide groove and the second oil guide groove are arc-shaped, at least two first oil guide grooves are axially spaced around the positioning guide groove, and at least two second oil guide grooves are circumferentially spaced around the positioning guide groove.

[0019] By adopting the above solution, the oil supply area of ​​the first oil guide groove and the second oil guide groove to the first gasket and the second gasket is guaranteed.

[0020] Preferably, the upper end surface of the front template is provided with a first oil filling groove for injecting lubricant into the first oil guide groove and a second oil filling groove for injecting lubricant into the second oil guide groove.

[0021] By adopting the above solution, after the front template and the rear template are assembled, the lubricant is injected into the first oil guide groove and the second oil guide groove through the first oil filling groove and the second oil filling groove.

[0022] Preferably, the template body is provided with an anti-rotation structure to prevent relative rotation between the positioning boss and the positioning guide groove.

[0023] With the above solution, due to the high working stress, a rotation tendency will be generated along the contact center between the positioning boss and the positioning guide groove or between the front template and the rear template. The anti-rotation structure plays a fixing role, maintains assembly stability, and improves the overall structural rigidity.

[0024] Preferably, the anti-rotation structure includes a first positioning pin hole recessed on the front template, a second positioning pin hole recessed on the rear template, and connecting pins at both ends that are respectively adapted to be inserted into the first positioning pin hole and the second positioning pin hole when the positioning boss is inserted into the positioning guide groove.

[0025] By adopting the above scheme, before assembling the front template and the rear template, one end of the connecting pin is inserted into the second positioning pin hole, and then as the front template and the rear template are brought close to each other, the other end of the connecting pin is inserted into the first positioning pin hole, and the relative rotation between the front template and the rear template is limited by the connecting pin.

[0026] Preferably, the anti-rotation structure includes a first limiting surface arranged on the outer surface of the positioning boss and spaced axially around the positioning boss, and a second limiting surface arranged on the inner side wall of the positioning guide groove and cooperating with the first limiting surface to limit the relative rotation between the positioning boss and the positioning guide groove, and the first gasket is arranged on the second limiting surface.

[0027] By adopting the above solution, the first gasket on the first limiting surface and the second limiting surface abuts against each other to limit the relative rotation between the positioning boss and the positioning guide groove.

[0028] The utility model has significant technical effects due to the adoption of the above technical solutions:

[0029] 1. By disassembling the integrated template into the front template and the rear template, the size of the separated front template and the rear template are reduced, and the weight of each is reduced. The front template and the rear template are forged and processed separately to ensure the forging and processing accuracy; and the two can be transported separately, with reduced size and weight, reducing the difficulty and cost of transportation;

[0030] 2. When it is needed, take out the matching front template and rear template, insert the positioning boss guide into the positioning guide groove, realize pre-positioning to ensure the accurate installation between the front template and the rear template, and the bolt passes through the rear template and the threaded groove on the front template to engage with the thread and press the front template and the rear template to realize fixed connection. At this time, the positioning boss cooperates with the positioning guide groove to limit the relative slip between the front template and the rear template to avoid the bolt being subjected to shear force. At the same time, an anti-rotation structure is set to limit the rotation between the front template and the rear template along the contact center, maintain assembly stability, and improve the overall structural rigidity;

[0031] 3. The first gasket and the second gasket prevent the positioning boss and the rear template from being worn during use, and a lubrication structure is added to extend the service life of the first gasket and the second gasket. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a simplified schematic diagram of the forces on the movable platen and the fixed platen in a two-platen clamping device in the prior art;

[0033] Figure 2 and Figure 3 It is a disassembled diagram of a novel split template structure of an injection molding machine in Example 1;

[0034] Figure 4 It is a cross-sectional view of a novel split template structure of an injection molding machine after assembly in Example 1;

[0035] Figure 5 yes Figure 4 A in the enlarged view;

[0036] Figure 6 This is a disassembled diagram of a novel split template structure of an injection molding machine in Example 2.

[0037] The names of the parts indicated by the numerical labels in the above drawings are as follows: 1. Template body; 101. Front template; 102. Rear template; 2. Positioning boss; 3. Positioning guide groove; 4. Thread groove; 5. Bolt; 6. First gasket; 7. Second gasket; 8. First oil guide groove; 801. First oil refueling groove; 9. Second oil guide groove; 901. Second oil refueling groove; 10. First positioning pin hole; 11. Connecting pin; 12. First limit surface; 13. Second limit surface. DETAILED DESCRIPTION

[0038] The utility model is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0039] Example 1

[0040] A new type of split template structure for injection molding machines, refer to Figures 2 to 5, including a template body 1, the template body 1 includes a front template 101, a rear template 102 and an assembly structure that is fixedly connected when the two are accurately positioned.

[0041] By disassembling the integrated template into the front template 101 and the rear template 102, the size of the separated front template 101 and the rear template 102 is reduced, and the weight of each is reduced. The front template 101 and the rear template 102 are forged and processed separately to ensure the forging and processing accuracy; and the two can be transported separately, the size is reduced and the weight is reduced, which reduces the difficulty and cost of transportation. When it is needed, take out the adapted front template 101 and the rear template 102, and complete the fixed connection by splicing them through the assembly structure; and because the front template 101 and the rear template 102 are manufactured separately, the upper limit of the size of the template body 1 formed after the fixed connection can be greatly increased.

[0042] The assembly structure includes a positioning and protection structure provided between the front template 101 and the rear template 102, which has both positioning and protection functions, and a fixed connection structure that limits the movement of the two after the two are positioned. The front template 101 and the rear template 102 are pre-positioned by the positioning and protection structure, which facilitates the precise installation of the subsequent fixed connection structure. After the pre-positioning between the front template 101 and the rear template 102 is completed, the fixed connection structure enables the front template 101 and the rear template 102 to be fixedly connected. In addition, since the front template 101 and the rear template 102 need to be used in a two-plate clamping structure after being assembled to form the template body 1, the template body 1 will be subjected to the following conditions when the mold is pressed. Figure 1 The extrusion pressure shown causes the risk of relative slippage between the front template 101 and the rear template 102, resulting in shear force on the fixed connection structure, shortening the service life of the fixed connection structure, and increasing the risk of use of the template body 1. At this time, the positioning protection structure also has a protection function. After the front template 101 and the rear template 102 are fixedly connected, the positioning protection structure can limit the relative slippage between the two to avoid the fixed connection structure being affected by shear force.

[0043] The positioning protection structure includes a positioning boss 2 convexly provided at the center of the rear template 102, and a positioning guide groove 3 concavely provided at the center of the front template 101, and the positioning guide groove 3 is used for guiding the positioning boss 2. The positioning boss 2 is guided into the positioning guide groove 3 to realize the pre-positioning function, which is convenient for the accurate installation of the fixed connection structure; when the front template 101 and the rear template 102 are fixedly connected, the positioning boss 2 and the positioning guide groove 3 cooperate to limit the relative sliding of the two to avoid the fixed connection structure from being subjected to shear force.

[0044] The fixed connection structure includes a thread groove 4 recessed on the front template 101, and also includes a bolt 5. After the bolt 5 passes through the rear template 102, it is threadedly engaged with the thread groove 4 to limit the relative movement between the front template 101 and the rear template 102. The rear template 102 is provided with an avoidance groove for the bolt 5 to pass through. The bolt 5 and the thread groove 4 are fixedly connected by thread engagement. If there is a risk of relative slippage between the front template 101 and the rear template 102, the bolt 5 will be deformed or broken by shear force. Therefore, the positioning boss 2 and the positioning guide groove 3 can cooperate to limit the relative slippage between the front template 101 and the rear template 102 to avoid the bolt 5 from being subjected to shear force.

[0045] The contact surface between the positioning boss 2 and the positioning guide groove 3 and the contact surface between the front template 101 and the rear template 102 are affected by the extrusion force of the mold when the template body 1 is working, causing sliding friction and wear. Therefore, a protective structure with both anti-slip and anti-wear properties is set between the front template 101 and the rear template 102 to reduce wear, extend service life and protect matching accuracy.

[0046] The protective structure includes a first gasket 6 fixedly arranged on the inner wall of the positioning guide groove 3, and a plurality of first gaskets 6 are fixedly arranged at intervals in the axial direction around the positioning boss 2. The first gasket 6 is fixedly arranged on the inner wall of the positioning guide groove 3. After the positioning boss 2 is inserted into the positioning guide groove 3 and the front template 101 and the rear template 102 are pressed and connected by the fixed connection structure, the outer wall of the positioning boss 2 abuts against the first gasket 6, and the radial movement between the two is avoided. At the same time, the first gasket 6 is worn during long-term use. Only the first gasket 6 needs to be replaced, which is convenient and low in cost. Similarly, it also includes a second gasket 7 fixedly arranged on the side of the front template 101 close to the rear template 102. A plurality of second gaskets 7 are fixedly arranged at intervals in the circumferential direction around the positioning guide groove 3. After the front template 101 and the rear template 102 are assembled, the rear template 102 abuts against the second gasket 7, and the second gasket 7 wears between the front template 101 and the rear template 102, which plays a protective role. The first gasket 6 and the second gasket 7 are fixedly mounted on the front template 101 by screws.

[0047] To ensure that after assembly, there will be no radial movement between the positioning boss 2 and the positioning guide groove 3, and the front template 101 and the rear template 102 will not be close to each other, the first gasket 6 and the second gasket 7 need to be made of a metal material with relatively high hardness to avoid elastic deformation leading to relative movement between the positioning boss 2 and the positioning guide groove 3 or the front template 101 and the rear template 102. And to ensure that the first gasket 6 and the second gasket 7 play a protective role against wear, the hardness of the metal material used to make the two gaskets needs to be lower than the hardness of the metal material used to make the template body 1.

[0048] A lubrication structure is provided on the front template 101 for lubricating the first gasket 6 and the second gasket 7. The lubrication structure includes a first oil guide groove 8 recessed on the inner annular surface of the positioning guide groove 3, a second oil guide groove 9 recessed on a side of the front template 101 close to the positioning boss 2, and lubricant injected into the first oil guide groove 8 and the second oil guide groove 9. The first oil guide groove 8 and the second oil guide groove 9 are both concentrically arranged with the positioning guide groove 3. The opening of the first oil guide groove 8 faces the first gasket 6, and the opening of the second oil guide groove 9 faces the second gasket 7. A lubrication environment is provided for the first gasket 6 through the first oil guide groove 8, and a lubrication environment is provided for the second gasket 7 through the second oil guide groove 9, thereby reducing the friction consumption between the positioning boss 2 and the first gasket 6 and between the rear template 102 and the second gasket 7, and extending the service life of the first gasket 6 and the second gasket 7.

[0049] The first oil guide groove 8 and the second oil guide groove 9 are in an annular or arc shape. In this embodiment, the first oil guide groove 8 and the second oil guide groove 9 are in an arc shape. Two first oil guide grooves 8 are provided on the inner side wall of the positioning guide groove 3 and are symmetrically arranged along the axis of the positioning guide groove 3. Two second oil guide grooves 9 are provided on the front template 101 and are symmetrically arranged along the axis of the positioning guide groove 3, thereby ensuring the oil supply area of ​​the first oil guide groove 8 and the second oil guide groove 9 to the first gasket 6 and the second gasket 7. The upper end surface of the front template 101 is provided with a first oiling groove 801 for injecting lubricant into the first oil guide groove 8 and a second oiling groove 901 for injecting lubricant into the second oil guide groove 9. After the front template 101 and the rear template 102 are assembled, the lubricant can be injected into the first oil guide groove 8 and the second oiling groove 901 through the first oiling groove 801 and the second oiling groove 901.

[0050] Due to the large working stress, there will be a rotation tendency along the contact center between the positioning boss 2 and the positioning guide groove 3 or between the front template 101 and the rear template 102. By setting an anti-rotation structure on the template body 1, relative rotation between the positioning boss 2 and the positioning guide groove 3 can be avoided. The anti-rotation structure plays a fixing role, maintains assembly stability, and improves the overall structural rigidity.

[0051] The anti-rotation structure includes a first positioning pin hole 10 recessed on the front template 101, a second positioning pin hole recessed on the rear template 102, and a connecting pin 11. Before the front template 101 and the rear template 102 are assembled, one end of the connecting pin 11 is inserted into the second positioning pin hole, and then as the front template 101 and the rear template 102 are close to each other, the other end of the connecting pin 11 is inserted into the first positioning pin hole 10, and the relative rotation between the front template 101 and the rear template 102 is limited by the connecting pin 11. The second positioning pin hole is not shown in the figure, but the second positioning pin hole can be judged by the connecting pin 11 and the above text description, which will not be repeated here.

[0052] During installation, take out the adapted front template 101 and rear template 102, and guide the positioning boss 2 into the positioning guide groove 3 to achieve pre-positioning to ensure accurate installation between the front template 101 and the rear template 102. At this time, the two ends of the connecting pin 11 are respectively adapted to be inserted into the first positioning pin hole 10 and the second positioning pin hole to limit the rotation between the front template 101 and the rear template 102. The bolt 5 can pass through the rear template 102 and then engage with the threaded groove 4 on the front template 101 to tighten the front template 101 and the rear template 102 to achieve a fixed connection.

[0053] Example 2

[0054] Compared with the embodiment 1 in which the relative rotation between the front template 101 and the rear template 102 is limited by the interlacing cooperation of the first positioning pin hole 10, the second positioning pin hole and the connecting pin 11, the first positioning pin hole 10, the second positioning pin hole and the connecting pin 11 are not required in this embodiment. Figure 6 By setting a first limiting surface 12 on the outer surface of the positioning boss 2 and axially spaced around the positioning boss 2, a second limiting surface 13 matching the first limiting surface 12 is set on the inner wall of the positioning guide groove 3, and the first gasket 6 is set on the second limiting surface 13. The first limiting surface 12 and the first gasket 6 on the second limiting surface 13 abut against each other to limit the relative rotation between the positioning boss 2 and the positioning guide groove 3. In this embodiment, 8 groups of first limiting surfaces 12 and second limiting surfaces 13 are set and are evenly spaced around the positioning boss 2 axially.

[0055] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A novel split template structure for an injection molding machine, comprising a template body (1), characterized in that: The template body (1) comprises a front template (101), a rear template (102) and an assembly structure which is fixedly connected when the two are precisely positioned, the assembly structure comprising a positioning protection structure which has both positioning and protection functions and a fixed connection structure which limits the relative movement of the two after the two are positioned, the positioning protection structure comprising a positioning boss (2) which is convexly arranged at the center of the rear template (102), a positioning guide groove (3) which is concavely arranged at the center of the front template (101) for guiding the positioning boss (2) to be inserted, and a protective structure which has both anti-slip and anti-wear properties and is arranged between the front template (101) and the rear template (102).

2. According to claim 1, a novel split template structure for injection molding machine is characterized in that: The fixed connection structure comprises a thread groove (4) recessed on the front template (101) and a bolt (5) which passes through the rear template (102) and is threadably engaged with the thread groove (4) to limit the relative movement of the front template (101) and the rear template (102).

3. According to the novel split template structure of injection molding machine as claimed in claim 1, it is characterized in that: The protective structure comprises a plurality of first gaskets (6) fixedly arranged at intervals in the circumferential direction around the positioning boss (2) on the inner side wall of the positioning guide groove (3) and a plurality of second gaskets (7) fixedly arranged at intervals in the circumferential direction around the positioning guide groove (3) on the side of the front template (101) close to the rear template (102); after the front template (101) and the rear template (102) are assembled, the first gaskets (6) abut against the outer side surface of the positioning boss (2) and the second gaskets (7) abut against one side of the rear template (102) where the positioning boss (2) is arranged.

4. A novel split template structure for injection molding machine according to claim 3, characterized in that: The first gasket (6) and the second gasket (7) are made of a metal material, and the hardness of the metal material is smaller than the hardness of the metal material used to prepare the template body (1).

5. A novel split template structure for injection molding machine according to claim 4, characterized in that: A lubricating structure for lubricating the first gasket (6) and the second gasket (7) is provided on the front template (101), the lubricating structure comprising a first oil guide groove (8) concavely arranged on the inner ring surface of the positioning guide groove (3) and concentric with the positioning guide groove (3), a second oil guide groove (9) concavely arranged on a side of the front template (101) close to the positioning boss (2) and concentric with the positioning guide groove (3), and lubricant injected into the first oil guide groove (8) and the second oil guide groove (9), the opening of the first oil guide groove (8) facing the first gasket (6), and the opening of the second oil guide groove (9) facing the second gasket (7).

6. A novel split template structure for injection molding machine according to claim 5, characterized in that: The first oil guide groove (8) and the second oil guide groove (9) are in an annular or arc shape. When the first oil guide groove (8) and the second oil guide groove (9) are in an arc shape, at least two first oil guide grooves (8) are arranged axially around the positioning guide groove (3), and at least two second oil guide grooves (9) are arranged circumferentially around the positioning guide groove (3).

7. A novel split template structure for injection molding machine according to claim 5, characterized in that: The upper end surface of the front template (101) is provided with a first oil filling groove (801) for injecting lubricant into the first oil guide groove (8) and a second oil filling groove (901) for injecting lubricant into the second oil guide groove (9).

8. A novel split template structure for injection molding machine according to claim 3, characterized in that: The template body (1) is provided with an anti-rotation structure for preventing relative rotation between the positioning boss (2) and the positioning guide groove (3).

9. A novel split template structure for injection molding machine according to claim 8, characterized in that: The anti-rotation structure comprises a first positioning pin hole (10) recessed on the front template (101), a second positioning pin hole recessed on the rear template (102), and a connecting pin (11) whose two ends are respectively adapted to be inserted into the first positioning pin hole (10) and the second positioning pin hole when the positioning boss (2) is inserted into the positioning guide groove (3).

10. A novel split template structure for injection molding machine according to claim 8, characterized in that: The anti-rotation structure comprises a first limiting surface (12) arranged on the outer surface of the positioning boss (2) and spaced apart axially around the positioning boss (2), and a second limiting surface (13) arranged on the inner side wall of the positioning guide groove (3) and cooperating with the first limiting surface (12) to limit relative rotation between the positioning boss (2) and the positioning guide groove (3), and a first gasket (6) is arranged on the second limiting surface (13).

Images