Injection molding production equipment for plastic shock-absorbing pads

Abstract

This invention discloses an injection molding production equipment for plastic shock-absorbing pads, relating to the field of shock-absorbing pad injection molding technology. It includes a base, an injection mechanism and a mold mounted on top of the base. The mold is movable on the top of the base. A positioning plate is located on one side of the base, a positioning sleeve is fixed to the top of the positioning plate, and a movable sleeve is located inside the positioning sleeve and can move up and down within it. A negative pressure unit is located inside the movable sleeve, and a cutter is located on both sides of the top of the positioning sleeve and can move centrally on the top of the positioning sleeve. The advantages of this invention are: after the mold opens, it can automatically pick up the shock-absorbing pad material, avoiding safety hazards such as pinching and bumping caused by close contact with the mold by manual labor, greatly improving the safety and stability of equipment production. Furthermore, during the material picking process, residual waste material on the shock-absorbing pad can be trimmed, allowing for uniform trimming force and precision, effectively avoiding problems such as residual burrs, over-trimming, and product deformation that occur with manual trimming.

Description

Technical Field

[0001] This invention relates to the field of injection molding technology for shock-absorbing pads, and in particular to injection molding production equipment for plastic shock-absorbing pads. Background Technology

[0002] Currently, most shock-absorbing pads on the market are mass-produced using injection molding technology. The core production equipment used is an injection molding machine. The entire set of equipment mainly consists of an injection system, a mold clamping system, a temperature control system, a hydraulic transmission system, and matching molds. During production, the raw material is heated and plasticized by the equipment and then injected into the mold cavity under high pressure. After cooling and solidification, the shock-absorbing pad is formed. Subsequently, the injection molding machine drives the mold to complete the mold opening action. After the mold is opened, the operator manually removes the formed shock-absorbing pads one by one from the cavity. At the same time, the flash, sprue, and other waste generated by injection molding at the product edges are trimmed by hand tools.

[0003] Manual close contact with the mold during operation poses safety hazards such as pinching and bumping, resulting in poor operational safety. Furthermore, the force and angle of manual trimming of waste materials cannot be standardized, which can easily lead to over-trimming, residual burrs, and other problems. This results in insufficient consistency in the appearance and size of the finished shock-absorbing pads, making it difficult to guarantee the product yield. Summary of the Invention

[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0005] In view of the problems existing in the above and / or existing injection molding production equipment for plastic shock-absorbing pads, the present invention is proposed.

[0006] Therefore, the problem that this invention aims to solve is that manual material handling poses safety hazards, and manual trimming of waste materials makes it difficult to guarantee the yield rate.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution: an injection molding production equipment for plastic shock-absorbing pads, comprising a base and an injection mechanism and a mold disposed on the top of the base, the mold being movable on the top of the base, a positioning plate disposed on one side of the base, a positioning sleeve fixed on the top of the positioning plate, a movable sleeve disposed inside the positioning sleeve and movable up and down within the positioning sleeve, a negative pressure unit disposed inside the movable sleeve, a cutter disposed on both sides of the top of the positioning sleeve and movable centrally on the top of the positioning sleeve, a support plate fixed to the bottom of the positioning plate by a mounting rod, a connecting column fixed to the bottom of the movable sleeve and a connecting frame fixed at the bottom end, a first cylinder fixed to the support plate and its output end fixed to the connecting frame, a rotating unit disposed on the top of the positioning plate and connected to the cutter and the connecting frame respectively, and a movable unit disposed on the support plate for driving the support plate to move and lift. After the mold is opened, the support plate drives the positioning plate and the positioning sleeve to move below the mold, so that the movable sleeve picks up the shock-absorbing block and trims the shock-absorbing block by the cutter.

[0008] As a preferred embodiment of the injection molding production equipment for the plastic shock-absorbing pad described in this invention, the negative pressure unit includes a sealing plate disposed at the bottom of the movable sleeve, the bottom of the movable sleeve having a vent hole, a support column fixed at the bottom of the sealing plate, a stabilizing frame fixed at the bottom of the movable sleeve, and two ends of the spring fixed to the stabilizing frame and the sealing plate respectively.

[0009] As a preferred embodiment of the injection molding production equipment for the plastic shock-absorbing pad described in this invention, the negative pressure unit further includes a push column inserted into the movable sleeve, a rotating rod hinged to the bottom of the movable sleeve via a hinge rod, a connecting shaft fixed to the bottom of the sealing plate, one end of the rotating rod connected to the connecting shaft via a sliding groove, an extrusion sleeve disposed on the outside of the push column, and a limiting rod fixed to the bottom of the movable sleeve.

[0010] As a preferred embodiment of the injection molding production equipment for the plastic shock-absorbing pad described in this invention, the rotating unit includes a positioning rod fixed to the bottom of the cutter, a rotating column rotatably connected to the top of the positioning plate through a stabilizing block, and its end inserted into the positioning rod. The rotating column is provided with a spiral groove, and a fixed shaft is fixed to the positioning plate and slidably connected to the spiral groove.

[0011] As a preferred embodiment of the injection molding production equipment for the plastic shock-absorbing pad described in this invention, the rotating unit further includes a force-bearing rod fixed to the end of the rotating column, a connecting rod fixed to one side of the connecting frame with its top end extending above the positioning plate, and an elastic rod fixed to the top of the connecting frame and located above the force-bearing rod.

[0012] As a preferred embodiment of the injection molding production equipment for the plastic shock-absorbing pad described in this invention, the moving unit includes a connecting plate fixed to one side of the support plate, a second cylinder located at the bottom of the connecting plate, a threaded rod rotatably connected to the top of the base via an mounting block, the bottom of the second cylinder being threadedly connected to the threaded rod via a slider, and a motor located at one end of the threaded rod.

[0013] As a preferred embodiment of the injection molding production equipment for the plastic shock-absorbing pad described in this invention, the moving unit further includes a fixing plate fixed to one side of the second cylinder, a third cylinder fixed to the top of the fixing plate, and the output end of the third cylinder connected to the connecting plate through the cooperation of a slide rail and a sliding shaft.

[0014] As a preferred embodiment of the injection molding production equipment for the plastic shock-absorbing pad described in this invention, the mold includes an upper mold and a lower mold, and an opening mechanism is provided on the top of the base for opening the upper mold upward.

[0015] As a preferred embodiment of the injection molding production equipment for the plastic shock-absorbing pad described in this invention, the cutter has a semi-circular notch, and the inner side of the semi-circular notch is set in a blade shape. When the cutter cuts, it will not be obstructed by the screw at the center of the shock-absorbing block, thus preventing it from merging.

[0016] In a preferred embodiment of the injection molding production equipment for the plastic shock-absorbing pad described in this invention, the extrusion sleeve is connected to the push column by friction, and the friction between the two is greater than the elastic force of the spring.

[0017] The beneficial effects of this invention are as follows: After the mold is opened, the shock-absorbing pad can be automatically picked up, avoiding safety hazards such as pinching and bumping caused by close contact between the manual and the mold, greatly improving the safety and stability of equipment production. In addition, during the picking process, residual waste on the shock-absorbing pad can be trimmed. The trimming can be uniform in terms of trimming force and precision, effectively avoiding problems such as residual burrs, over-trimming, and product deformation caused by manual trimming, ensuring the consistency of the appearance and size of the finished shock-absorbing pad, and greatly improving the product yield. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is an overall structural diagram of the injection molding production equipment for plastic shock-absorbing pads.

[0020] Figure 2 This is a structural diagram of the positioning plate for injection molding production equipment of plastic shock-absorbing pads.

[0021] Figure 3 Injection molding production equipment for plastic shock-absorbing pads Figure 2 Enlarged view of the structure at point A in the middle.

[0022] Figure 4This is a side view of the positioning plate of the injection molding production equipment for plastic shock-absorbing pads.

[0023] Figure 5 Injection molding production equipment for plastic shock-absorbing pads Figure 4 Enlarged view of the structure at point B in the middle.

[0024] Figure 6 Injection molding production equipment for plastic shock-absorbing pads Figure 4 Enlarged view of the structure at point C.

[0025] Figure 7 This is a bottom view of the positioning plate of the injection molding production equipment for plastic shock-absorbing pads.

[0026] Figure 8 Cross-sectional structural diagram of the positioning sleeve and moving sleeve of the injection molding production equipment for plastic shock-absorbing pads.

[0027] Figure 9 This is a structural diagram of the rotating unit of an injection molding production equipment for plastic shock-absorbing pads.

[0028] Figure 10 This is a structural diagram of the positioning sleeve and cutter for the injection molding production equipment of plastic shock-absorbing pads.

[0029] In the diagram: 1. Base; 2. Injection mechanism; 3. Mold; 4. Positioning plate; 5. Positioning sleeve; 6. Moving sleeve; 7. Negative pressure unit; 8. Cutter; 9. Support plate; 10. Connecting column; 11. Connecting frame; 12. First cylinder; 13. Rotating unit; 14. Moving unit; 71. Sealing plate; 72. Supporting column; 73. Stabilizing frame; 74. Spring; 75. Push column; 76. Rotating rod; 77. Connecting shaft; 78. Extrusion sleeve; 79. Limiting rod; 131. Positioning rod; 132. Rotating column; 1321. Spiral groove; 133. Fixed shaft; 134. Force rod; 135. Connecting rod; 136. Elastic rod; 141. Connecting plate; 142. Second cylinder; 143. Threaded rod; 144. Motor; 145. Fixed plate; 146. Third cylinder. Detailed Implementation

[0030] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0031] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0032] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0033] Example 1, referring to Figure 1 and Figure 2 , Figures 7-10 This is the first embodiment of the present invention. This embodiment provides an injection molding production equipment for plastic shock-absorbing pads, including a base 1, an injection mechanism 2 and a mold 3 disposed on the top of the base 1. A raw material conveying pipe is connected to one side of the injection mechanism 2 for conveying heated raw material into the injection mechanism 2. The mold 3 can move on the top of the base 1. The mold 3 includes an upper mold and a lower mold. An opening mechanism is provided on the top of the base 1 for opening the upper mold upward. When the mold 3 moves to the bottom of the injection mechanism 2, the injection mechanism 2 presses down and inserts the injection needle into the injection hole on the mold 3 to complete the injection of raw material, thereby completing the processing and molding of the shock-absorbing pad. This is the prior art, and this solution will not be described in detail. Moreover, those skilled in the art can clearly understand the working principle.

[0034] Positioning plate 4 is located on one side of base 1, positioning sleeve 5 is fixed on top of positioning plate 4, bottom of positioning sleeve 5 penetrates positioning plate 4, and the number is consistent with the mold holes on mold 3. Positioning sleeve 5 is tapered at the top, the diameter of the top of positioning sleeve 5 is the same as that of shock-absorbing pad, and the diameter of the bottom is larger than that of shock-absorbing pad.

[0035] The movable sleeve 6 is located inside the positioning sleeve 5 and can move up and down within the positioning sleeve 5. The diameter of the movable sleeve 6 is the same as that of the shock-absorbing pad. The negative pressure unit 7 is located inside the movable sleeve 6.

[0036] After the upper mold is opened, the positioning plate 4 is moved to the bottom of the upper mold and the positioning sleeve 5 is aligned with the shock-absorbing pad. At this time, the positioning plate 4 drives the positioning sleeve 5 to move upward, and the shock-absorbing pad is inserted into the positioning sleeve 5 and the moving sleeve 6. Then the positioning plate 4 is moved downward. At this time, with the cooperation of the negative pressure unit 7, the moving sleeve 6 will firmly suck up the shock-absorbing pad and drive the shock-absorbing pad to move downward and separate from the upper mold, thereby completing the removal of the shock-absorbing pad. This avoids the safety hazards such as pinching and bumping caused by close contact between the manual and the mold, greatly improving the safety and stability of the equipment production. Moreover, the removal of the shock-absorbing pad by negative pressure adsorption can effectively avoid damage to the shock-absorbing pad.

[0037] The cutter 8 is located on both sides of the top of the positioning sleeve 5 and can move in the center of the top of the positioning sleeve 5. There are two cutters 8 on the top of the positioning sleeve 5, located on both sides of the top of the positioning sleeve 5 respectively. The cutter 8 has a semi-circular notch, and the inner side of the semi-circular notch is set as a blade. When the cutter 8 is cutting, it will not be obstructed by the screw at the center of the shock absorber block, which will prevent it from merging.

[0038] The support plate 9 is fixed to the bottom of the positioning plate 4 by the mounting rod. The relative position of the support plate 9 and the positioning plate 4 is fixed. The connecting column 10 is fixed to the bottom of the movable sleeve 6, and the bottom end is fixed with a connecting frame 11. The number of connecting columns 10 corresponds to the movable sleeve 6, and is used to connect and fix multiple movable sleeves 6 to the connecting frame 11. The first cylinder 12 is fixed on the support plate 9, and the output end is fixed to the connecting frame 11.

[0039] The rotating unit 13 is located on the top of the positioning plate 4 and is connected to the cutter 8 and the connecting frame 11 respectively.

[0040] After the positioning plate 4 moves the shock-absorbing pad out of the upper mold, the first cylinder 12 is activated to move the connecting frame 11 and the moving sleeve 6 downward. The moving sleeve 6 moves the shock-absorbing pad downward to the positioning sleeve 5. When the top of the shock-absorbing pad is flush with the top port of the positioning sleeve 5, the rotating unit 13 will drive the cutter 8 to move in the center. The cutter 8 will trim and remove the waste material remaining on the top of the shock-absorbing pad. The trimming can be uniform in terms of trimming force and precision, effectively avoiding problems such as burrs, over-trimming, and product deformation that occur with manual trimming.

[0041] The moving unit 14 is mounted on the support plate 9 and is used to move and lift the support plate 9.

[0042] Example 2, refer to Figures 3-9 This is the second embodiment of the present invention, which is based on the previous embodiment.

[0043] Specifically, the negative pressure unit 7 includes a sealing plate 71 located at the bottom of the movable sleeve 6, with a vent hole at the bottom of the movable sleeve 6. The sealing plate 71 seals the vent hole. A support column 72 is fixed at the bottom of the sealing plate 71. A stabilizing frame 73 is fixed at the bottom of the movable sleeve 6. The stabilizing frame 73 is U-shaped. The support column 72 is movably connected to the stabilizing frame 73. The two cooperate to support and position the sealing plate 71. The two ends of the spring 74 are fixed to the stabilizing frame 73 and the sealing plate 71, respectively.

[0044] When the shock-absorbing pad moves into the movable sleeve 6, the air pressure generated by the movement of the shock-absorbing pad will push the sealing plate 71 to open. At this time, it will not hinder the movement of the shock-absorbing pad into the movable sleeve 6. When the shock-absorbing pad stops moving, the spring 74 will apply an upward thrust to the sealing plate 71, so that the sealing plate 71 seals the vent. When the movable sleeve 6 moves downward, a negative pressure will be formed between the bottom of the shock-absorbing pad and the movable sleeve 6, so that the shock-absorbing pad cannot be separated from the movable sleeve 6. Thus, the shock-absorbing pad can be driven to move downward through the movable sleeve 6.

[0045] The negative pressure unit 7 also includes a pusher 75 inserted into the movable sleeve 6. There are two pushers 75 inside the movable sleeve 6, which are inserted into the two sides inside the movable sleeve 6 respectively. The tops of the two pushers are connected and fixed by a push plate. The center of the rotating rod 76 is hinged to the bottom of the movable sleeve 6 by a hinge rod. The connecting shaft 77 is fixed to the bottom of the sealing plate 71. One end of the rotating rod 76 is connected to the connecting shaft 77 through a sliding groove. The squeezing sleeve 78 is located outside the pusher 75. The squeezing sleeve 78 is connected to the pusher 75 by friction, and the friction between the two is greater than the elastic force of the spring 74. The limiting rod 79 is fixed to the bottom of the movable sleeve 6. The limiting rod 79 is L-shaped.

[0046] When the shock-absorbing pad enters the movable sleeve 6, it will push the push column 75 to move downward. At this time, the push column 75 will drive the compression sleeve 78 to move downward. When the compression sleeve 78 contacts the end of the limit rod 79, it will be obstructed and unable to move. At this time, the push column 75 will counteract the friction between itself and the compression sleeve 78 and continue to move downward.

[0047] When the connecting frame 11 moves the movable sleeve 6 downward, the bottom end of the push column 75 will contact the support plate 9 and move upward under the reverse thrust of the support plate 9. At this time, the push column 75 will move the extrusion sleeve 78 upward, causing the extrusion sleeve 78 to push one end of the rotating rod 76 upward. At this time, the other end of the rotating rod 76 will move the sealing plate 71 downward through the cooperation of the sliding groove and the connecting shaft 77, and release the negative pressure state between the shock-absorbing pad and the movable sleeve 6. When the push column 75 moves upward, it will push the shock-absorbing pad upward away from the movable sleeve 6, thereby completing the feeding of the shock-absorbing pad.

[0048] The rotating unit 13 includes a positioning rod 131 fixed to the bottom of the cutter 8. The bottom of the cutter 8 is fixed with positioning rods 131 on both sides. The rotating column 132 is rotatably connected to the top of the positioning plate 4 through a stabilizing block, and its two ends are respectively inserted into the two positioning rods 131. The rotating column 132 has a spiral groove 1321 at both ends. The spiral directions of the two spiral grooves 1321 are opposite, and the pitch of the spiral groove 1321 is large. The fixed shaft 133 is fixed on the positioning plate 4 and is slidably connected to the spiral groove 1321.

[0049] When the rotating column 132 rotates, the fixed shaft 133 will slide in the spiral groove 1321. The two work together to drive the positioning rod 131 and the cutter 8 to move, so that the cutter 8 can trim and remove the waste material remaining on the top of the shock-absorbing pad.

[0050] Because of the large pitch of the spiral groove 1321, the cutter 8 will move a long distance when the rotating column 132 rotates at a very small angle, so that the waste material can be quickly removed during the downward movement of the shock-absorbing pad.

[0051] The rotating unit 13 also includes a force-bearing rod 134 fixed to the end of the rotating column 132, a connecting rod 135 fixed to one side of the connecting frame 11, and its top end extending through to the top of the positioning plate 4. The positioning plate 4 has a through groove, and an elastic rod 136 fixed to the top of the connecting frame 11 and located above the force-bearing rod 134. The elastic rod 136 will bend when subjected to force.

[0052] When the connecting frame 11 moves downward, it will drive the connecting rod 135 and the elastic rod 136 to move downward, so that the elastic rod 136 is close to the force rod 134. When the top of the shock-absorbing pad is flush with the top of the positioning sleeve 5, the elastic rod 136 will contact the force rod 134 and push the force rod 134 downward, so that the force rod 134 can drive the rotating column 132 to rotate. When the force rod 134 contacts the positioning plate 4 and cannot rotate, and the connecting rod 135 and the elastic rod 136 continue to move downward, the elastic rod 136 will bend and move with the connecting rod 135 to below the positioning plate 4.

[0053] When the connecting frame 11 moves the connecting rod 135 and the elastic rod 136 upward, the elastic rod 136 contacts the bottom of the force rod 134, which pushes the force rod 134 to rotate upward and reset, and causes the rotating column 132 to drive the two cutters 8 to reset. At this time, the force rod 134 cannot rotate, and when the connecting rod 135 and the elastic rod 136 continue to move upward, the elastic rod 136 will bend and move above the force rod 134.

[0054] Example 3, referring to Figure 2 and Figure 3 This is the third embodiment of the present invention, which is based on the first two embodiments.

[0055] Specifically, there are two sets of moving units 14, located on both sides of the support plate 9. The moving unit 14 includes a connecting plate 141 fixed on one side of the support plate 9, a second cylinder 142 located at the bottom of the connecting plate 141, the top of the second cylinder 142 being hinged to the connecting plate 141 via a hinge seat, a threaded rod 143 being rotatably connected to the top of the base 1 via a mounting block, the bottom of the second cylinder 142 being threadedly connected to the threaded rod 143 via a slider, and a motor 144 located at one end of the threaded rod 143, with the output end of the motor 144 being fixed to the threaded rod 143.

[0056] When the upper mold is opened, the starter motor 144 drives the threaded rod 143 to rotate. The threaded rod 143 drives the second cylinder 142 and the connecting plate 141 to move through the slider, so that the support plate 9 moves to below the upper mold. Then, the second cylinder 142 is started to push the connecting plate 141 and the support plate 9 to move upward, so that the positioning sleeve 5 is placed on the outside of the shock-absorbing pad. Then, the second cylinder 142 drives the support plate 9 and the positioning sleeve 5 to move downward, and completes the removal of the shock-absorbing pad.

[0057] The moving unit 14 also includes a fixed plate 145 fixed to one side of the second cylinder 142, and a third cylinder 146 fixed to the top of the fixed plate 145. The output end of the third cylinder 146 is connected to the connecting plate 141 through the cooperation of the slide rail and the sliding shaft. When it is below the upper mold, the third cylinder 146 moves up and down synchronously with the second cylinder 142. When the support plate 9 moves outward and the moving sleeve 6 takes the shock-absorbing pad out of the positioning sleeve 5, the third cylinder 146 is started and the connecting plate 141 and the support plate 9 are tilted downward through the cooperation of the slide rail and the sliding shaft. This allows the shock-absorbing pad that is separated from the moving sleeve 6 and the positioning sleeve 5 at the top of the support plate 9 to roll to one side and separate from the support plate 9. It can be collected below through the collection box. At this time, the residual waste material cut off flows to the top of the positioning plate 4, which can be cleaned by the staff with an air gun.

[0058] In use, when the upper mold is opened, the starter motor 144 drives the threaded rod 143 to rotate. The threaded rod 143 drives the second cylinder 142 and the connecting plate 141 to move through the slider, so that the support plate 9 moves to the bottom of the upper mold, aligning the positioning sleeve 5 with the shock-absorbing pad. Then, the second cylinder 142 is started to push the connecting plate 141 and the support plate 9 upward, so that the shock-absorbing pad is inserted into the positioning sleeve 5 and the moving sleeve 6. Then, the positioning plate 4 is moved downward. At this time, with the cooperation of the negative pressure unit 7, the moving sleeve 6 will firmly suck up the shock-absorbing pad and drive the shock-absorbing pad to move downward and separate from the upper mold, thereby completing the removal of the shock-absorbing pad. This avoids the safety hazards of pinching and bumping caused by close contact between the manual and the mold, greatly improving the safety and stability of the equipment production. Moreover, the removal of the shock-absorbing pad by negative pressure adsorption can effectively avoid damage to the shock-absorbing pad.

[0059] After the positioning plate 4 moves the shock-absorbing pad out of the upper mold, the first cylinder 12 is activated to move the connecting frame 11 and the moving sleeve 6 downward. The moving sleeve 6 moves the shock-absorbing pad downward to the positioning sleeve 5. When the top of the shock-absorbing pad is flush with the top port of the positioning sleeve 5, the rotating unit 13 will drive the cutter 8 to move in the center. The cutter 8 will trim and remove the waste material remaining on the top of the shock-absorbing pad. The trimming can be uniform in terms of trimming force and precision, effectively avoiding problems such as burrs, over-trimming, and product deformation that occur with manual trimming.

[0060] At this time, the third cylinder 146 is activated and the sliding rail and sliding shaft work together to drive the connecting plate 141 and the support plate 9 to tilt downwards, so that the shock-absorbing pad on the top of the support plate 9, which is separated from the moving sleeve 6 and the positioning sleeve 5, can roll to one side and separate from the support plate 9. It can be collected below through the collection box. At this time, the residual waste material cut off flows on the top of the positioning plate 4, and the staff can clean it with an air gun.

[0061] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. An injection molding production equipment for plastic shock-absorbing pads, characterized in that: include, A base (1) and an injection mechanism (2) and a mold (3) disposed on top of the base (1), the mold (3) being movable on top of the base (1). The positioning plate (4) is located on one side of the base (1), and the positioning sleeve (5) is fixed on the top of the positioning plate (4). The movable sleeve (6) is located inside the positioning sleeve (5) and can move up and down within the positioning sleeve (5). The negative pressure unit (7) is located inside the movable sleeve (6). The cutter (8) is located on both sides of the top of the positioning sleeve (5) and can move centrally on the top of the positioning sleeve (5). The support plate (9) is fixed to the bottom of the positioning plate (4) by the mounting rod. The connecting column (10) is fixed to the bottom of the movable sleeve (6), and a connecting frame (11) is fixed to the bottom end. The first cylinder (12) is fixed to the support plate (9), and its output end is fixed to the connecting frame (11). The rotating unit (13) is located on the top of the positioning plate (4) and is connected to the cutter (8) and the connecting frame (11) respectively. The moving unit (14) is mounted on the support plate (9) and is used to move and lift the support plate (9). After the mold (3) is opened, the support plate (9) moves the positioning plate (4) and positioning sleeve (5) to the bottom of the mold (3), so that the moving sleeve (6) picks up the shock absorber block and trims the shock absorber block by the cutter (8).

2. The injection molding production equipment for the plastic shock-absorbing pad as described in claim 1, characterized in that: The negative pressure unit (7) includes a sealing plate (71) located at the bottom of the movable sleeve (6), a vent hole at the bottom of the movable sleeve (6), a support column (72) fixed at the bottom of the sealing plate (71), a stabilizer (73) fixed at the bottom of the movable sleeve (6), and two ends of the spring (74) fixed to the stabilizer (73) and the sealing plate (71) respectively.

3. The injection molding production equipment for the plastic shock-absorbing pad as described in claim 2, characterized in that: The negative pressure unit (7) also includes a push column (75) inserted into the movable sleeve (6), a rotating rod (76) hinged to the bottom of the movable sleeve (6) through a hinge rod, a connecting shaft (77) fixed to the bottom of the sealing plate (71), one end of the rotating rod (76) connected to the connecting shaft (77) through a sliding groove, a squeezing sleeve (78) located outside the push column (75), and a limiting rod (79) fixed to the bottom of the movable sleeve (6).

4. The injection molding production equipment for the plastic shock-absorbing pad as described in claim 3, characterized in that: The rotating unit (13) includes a positioning rod (131) fixed at the bottom of the cutter (8), a rotating column (132) rotatably connected to the top of the positioning plate (4) through a stabilizing block, and its end inserted into the positioning rod (131). The rotating column (132) is provided with a spiral groove (1321), and the fixed shaft (133) is fixed on the positioning plate (4) and slidably connected to the spiral groove (1321).

5. The injection molding production equipment for the plastic shock-absorbing pad as described in claim 3 or 4, characterized in that: The rotating unit (13) also includes a force-bearing rod (134) fixed at the end of the rotating column (132), a connecting rod (135) fixed on one side of the connecting frame (11) and extending to the top of the positioning plate (4), and an elastic rod (136) fixed at the top of the connecting frame (11) and located above the force-bearing rod (134).

6. The injection molding production equipment for the plastic shock-absorbing pad as described in claim 5, characterized in that: The moving unit (14) includes a connecting plate (141) fixed on one side of the support plate (9), a second cylinder (142) located at the bottom of the connecting plate (141), a threaded rod (143) rotatably connected to the top of the base (1) through an mounting block, the bottom of the second cylinder (142) being threadedly connected to the threaded rod (143) through a slider, and a motor (144) located at one end of the threaded rod (143).

7. The injection molding production equipment for the plastic shock-absorbing pad as described in claim 6, characterized in that: The moving unit (14) also includes a fixing plate (145) fixed on one side of the second cylinder (142), and a third cylinder (146) fixed on the top of the fixing plate (145). The output end of the third cylinder (146) is connected to the connecting plate (141) through the cooperation of the slide rail and the sliding shaft.

8. The injection molding production equipment for the plastic shock-absorbing pad as described in claim 6 or 7, characterized in that: The mold (3) includes an upper mold and a lower mold. The top of the base (1) is provided with a mold opening mechanism for opening the upper mold upward.

9. The injection molding production equipment for the plastic shock-absorbing pad as described in claim 8, characterized in that: The cutter (8) has a semi-circular notch, and the inner side of the semi-circular notch is set as a blade. When the cutter (8) cuts, it will not be obstructed by the screw at the center of the shock absorber block, thus preventing it from merging.

10. The injection molding production equipment for the plastic shock-absorbing pad as described in claim 9, characterized in that: The extrusion sleeve (78) is connected to the push post (75) by friction, and the friction between the two is greater than the elastic force of the spring (74).

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